Andrew Powell

Andrew Powell, MD

Chief, Division of Cardiac Imaging

Associate Professor of Pediatrics, Harvard Medical School

    Contact: 617-355-7655
  • Fax: 617-739-6282

Medical Services

Specialties

  • Echocardiography
  • Cardiovascular MRI
  • Cardiac CT
  • Fetal Cardiology
  • Pediatric cardiology
  • Cardiology

Departments

  • Cardiology

Programs

  • Fetal Cardiology Program
  • Non-Invasive Cardiac Imaging
  • Advanced Fetal Care Center
  • Complex Biventricular Repair Program
To schedule an appointment: Call 617-355-7655 or Request an Appointment

Experience and Education

Education

Undergraduate Degree

Harvard College, 1988

Cambridge, MA

Medical Degree

Harvard Medical School, 1992

Boston, MA

Internship

Boston Children's Hospital, 1993

Boston, MA

Residency

Boston Children's Hospital, 1995

Boston, MA

Fellowship

Boston Children's Hospital, 1998

Boston, MA

Certifications

  • Pediatrics, Pediatric Cardiology

Professional History

Dr. Andrew Powell is currently a Senior Associate in Cardiology at Boston Children’s Hospital, and Associate Professor of Pediatrics at Harvard Medical School. He graduated from Harvard Medical School in 1992 followed by a residency in pediatrics and fellowship in pediatric cardiology, both at Boston Children’s Hospital. Afterward, he joined the staff there in the Department of Cardiology, where he specializes in diagnostic imaging, the management of children with complex congenital heart disease, and fetal cardiology. In 2006, he became the Director of Cardiac MRI, and in 2015 he was elected to the Executive Committee of the Society for Cardiovascular Magnetic Resonance. Dr. Powell’s research has focused on the development of novel MRI methods to improve diagnosis, guide therapy, and predict outcomes of congenital and pediatric heart disease. He has published over 120 research papers, chapters, and review articles. Dr. Powell is also a devoted educator who speaks nationally and internationally on diagnostic imaging in congenital heart disease and has won numerous teaching awards.

Publications

Publications powered by Harvard Catalyst Profiles
  1. Shepard CW, Germanakis I, White MT, Powell AJ, Co-Vu J, Geva T. Cardiovascular Magnetic Resonance Findings Late After the Arterial Switch Operation. Circ Cardiovasc Imaging. 2016 Sep; 9(9).
  2. Jing L, Wehner GJ, Suever JD, Charnigo RJ, Alhadad S, Stearns E, Mojsejenko D, Haggerty CM, Hickey K, Valente AM, Geva T, Powell AJ, Fornwalt BK. Left and right ventricular dyssynchrony and strains from cardiovascular magnetic resonance feature tracking do not predict deterioration of ventricular function in patients with repaired tetralogy of Fallot. J Cardiovasc Magn Reson. 2016 Aug 22; 18(1):49.
  3. Cohen MS, Eidem BW, Cetta F, Fogel MA, Frommelt PC, Ganame J, Han BK, Kimball TR, Johnson RK, Mertens L, Paridon SM, Powell AJ, Lopez L. Multimodality Imaging Guidelines of Patients with Transposition of the Great Arteries: A Report from the American Society of Echocardiography Developed in Collaboration with the Society for Cardiovascular Magnetic Resonance and the Society of Cardiovascular Computed Tomography. J Am Soc Echocardiogr. 2016 Jul; 29(7):571-621.
  4. Rathod RH, Powell AJ, Geva T. Myocardial Fibrosis in Congenital Heart Disease. Circ J. 2016 May 25; 80(6):1300-7.
  5. Chen CA, Dusenbery SM, Valente AM, Powell AJ, Geva T. Myocardial ECV Fraction Assessed by CMR Is Associated With Type of Hemodynamic Load and Arrhythmia in Repaired Tetralogy of Fallot. JACC Cardiovasc Imaging. 2016 Jan; 9(1):1-10.
  6. Hallbergson A, Gauvreau K, Powell AJ, Geva T. Reply: To PMID 25483002. Ann Thorac Surg. 2015 Dec; 100(6):2419-20.
  7. Banka P, Robinson JD, Uppu SC, Harris MA, Hasbani K, Lai WW, Richmond ME, Fratz S, Jain S, Johnson TR, Maskatia SA, Lu JC, Samyn MM, Patton D, Powell AJ. Cardiovascular magnetic resonance techniques and findings in children with myocarditis: a multicenter retrospective study. J Cardiovasc Magn Reson. 2015; 17:96.
  8. Dusenbery SM, Lunze FI, Jerosch-Herold M, Geva T, Newburger JW, Colan SD, Powell AJ. Left Ventricular Strain and Myocardial Fibrosis in Congenital Aortic Stenosis. Am J Cardiol. 2015 Oct 15; 116(8):1257-62.
  9. Quennelle S, Powell AJ, Geva T, Prakash A. Persistent Aortic Arch Hypoplasia After Coarctation Treatment Is Associated With Late Systemic Hypertension. J Am Heart Assoc. 2015 Jul; 4(7).
  10. Moghari MH, Annese D, Geva T, Powell AJ. Three-dimensional heart locator and compressed sensing for whole-heart MR angiography. Magn Reson Med. 2016 May; 75(5):2086-93.
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  12. Jolley M, Hickey K, Annese D, Gauvreau K, Geva T, Valente AM, Powell AJ. Resting heart rate influences right ventricular volume in repaired tetralogy of Fallot. Pediatr Cardiol. 2015 Apr; 36(4):813-20.
  13. Hallbergson A, Gauvreau K, Powell AJ, Geva T. Right ventricular remodeling after pulmonary valve replacement: early gains, late losses. Ann Thorac Surg. 2015 Feb; 99(2):660-6.
  14. Banka P, Schaetzle B, Komarlu R, Emani S, Geva T, Powell AJ. Cardiovascular magnetic resonance parameters associated with early transplant-free survival in children with small left hearts following conversion from a univentricular to biventricular circulation. J Cardiovasc Magn Reson. 2014; 16:73.
  15. Chen MX, Gatfield K, Ward E, Downie D, Sneddon HF, Walsh S, Powell AJ, Laine D, Carr M, Trezise D. Validation and optimization of novel high-throughput assays for human epithelial sodium channels. J Biomol Screen. 2015 Feb; 20(2):242-53.
  16. Jing L, Haggerty CM, Suever JD, Alhadad S, Prakash A, Cecchin F, Skrinjar O, Geva T, Powell AJ, Fornwalt BK. Patients with repaired tetralogy of Fallot suffer from intra- and inter-ventricular cardiac dyssynchrony: a cardiac magnetic resonance study. Eur Heart J Cardiovasc Imaging. 2014 Dec; 15(12):1333-43.
  17. Moghari MH, Komarlu R, Annese D, Geva T, Powell AJ. Free-breathing steady-state free precession cine cardiac magnetic resonance with respiratory navigator gating. Magn Reson Med. 2015 Apr; 73(4):1555-61.
  18. Nichols-Vinueza DX, White MT, Powell AJ, Banka P, Neufeld EJ. MRI guided iron assessment and oral chelator use improve iron status in thalassemia major patients. Am J Hematol. 2014 Jul; 89(7):684-8.
  19. Rathod RH, Prakash A, Kim YY, Germanakis IE, Powell AJ, Gauvreau K, Geva T. Cardiac magnetic resonance parameters predict transplantation-free survival in patients with fontan circulation. Circ Cardiovasc Imaging. 2014 May; 7(3):502-9.
  20. Dhillon MS, Cockcroft CJ, Munsey T, Smith KJ, Powell AJ, Carter P, Wrighton DC, Rong HL, Yusaf SP, Sivaprasadarao A. A functional Kv1.2-hERG chimaeric channel expressed in Pichia pastoris. Sci Rep. 2014 Feb 26; 4:4201.
  21. Harrild DM, Marcus E, Hasan B, Alexander ME, Powell AJ, Geva T, McElhinney DB. Impact of transcatheter pulmonary valve replacement on biventricular strain and synchrony assessed by cardiac magnetic resonance feature tracking. Circ Cardiovasc Interv. 2013 Dec; 6(6):680-7.
  22. Valente AM, Gauvreau K, Assenza GE, Babu-Narayan SV, Schreier J, Gatzoulis MA, Groenink M, Inuzuka R, Kilner PJ, Koyak Z, Landzberg MJ, Mulder B, Powell AJ, Wald R, Geva T. Contemporary predictors of death and sustained ventricular tachycardia in patients with repaired tetralogy of Fallot enrolled in the INDICATOR cohort. Heart. 2014 Feb; 100(3):247-53.
  23. Yurasek GK, Gauvreau K, Powell AJ, Geva T, Brown DW. Great vessel root and artery dimensions in transposition of the great arteries repaired with atrial switch operation. Pediatr Cardiol. 2014 Mar; 35(3):457-62.
  24. Moghari MH, Roujol S, Henningsson M, Kissinger KV, Annese D, Nezafat R, Manning WJ, Geva T, Powell AJ. Three-dimensional heart locator for whole-heart coronary magnetic resonance angiography. Magn Reson Med. 2014 Jun; 71(6):2118-26.
  25. Gottlieb D, Fata B, Powell AJ, Cois CA, Annese D, Tandon K, Stetten G, Mayer JE, Sacks MS. Pulmonary artery conduit in vivo dimensional requirements in a growing ovine model: comparisons with the ascending aorta. J Heart Valve Dis. 2013 Mar; 22(2):195-203.
  26. Blalock SE, Banka P, Geva T, Powell AJ, Zhou J, Prakash A. Interstudy variability in cardiac magnetic resonance imaging measurements of ventricular volume, mass, and ejection fraction in repaired tetralogy of Fallot: a prospective observational study. J Magn Reson Imaging. 2013 Oct; 38(4):829-35.
  27. Brown DW, Gauvreau K, Powell AJ, Lang P, del Nido PJ, Odegard KC, Geva T. Cardiac magnetic resonance versus routine cardiac catheterization before bidirectional Glenn anastomosis: long-term follow-up of a prospective randomized trial. J Thorac Cardiovasc Surg. 2013 Nov; 146(5):1172-8.
  28. Khairy P, Clair M, Fernandes SM, Blume ED, Powell AJ, Newburger JW, Landzberg MJ, Mayer JE. Cardiovascular outcomes after the arterial switch operation for D-transposition of the great arteries. Circulation. 2013 Jan 22; 127(3):331-9.
  29. Krieger EV, Clair M, Opotowsky AR, Landzberg MJ, Rhodes J, Powell AJ, Colan SD, Valente AM. Correlation of exercise response in repaired coarctation of the aorta to left ventricular mass and geometry. Am J Cardiol. 2013 Feb 1; 111(3):406-11.
  30. Yereddi NR, Cusdin FS, Namadurai S, Packman LC, Monie TP, Slavny P, Clare JJ, Powell AJ, Jackson AP. The immunoglobulin domain of the sodium channel ß3 subunit contains a surface-localized disulfide bond that is required for homophilic binding. FASEB J. 2013 Feb; 27(2):568-80.
  31. Haq N, Grose D, Ward E, Chiu O, Tigue N, Dowell SJ, Powell AJ, Chen MX. A high-throughput assay for connexin 43 (Cx43, GJA1) gap junctions using codon-optimized aequorin. Assay Drug Dev Technol. 2013 Mar; 11(2):93-100.
  32. Farias M, Friedman KG, Powell AJ, de Ferranti SD, Marshall AC, Brown DW, Kulik TJ. Dynamic evolution of practice guidelines: analysis of deviations from assessment and management plans. Pediatrics. 2012 Jul; 130(1):93-8.
  33. Ou P, Zhao Y, Fawal SE, Banka P, Powell AJ. Cardiac T2 measurements in patients with iron overload: a comparison of imaging parameters and analysis techniques. Magn Reson Imaging. 2012 Jun; 30(5):641-8.
  34. Harrild DM, Han Y, Geva T, Zhou J, Marcus E, Powell AJ. Comparison of cardiac MRI tissue tracking and myocardial tagging for assessment of regional ventricular strain. Int J Cardiovasc Imaging. 2012 Dec; 28(8):2009-18.
  35. Prakash A, Rathod RH, Powell AJ, McElhinney DB, Banka P, Geva T. Relation of systemic-to-pulmonary artery collateral flow in single ventricle physiology to palliative stage and clinical status. Am J Cardiol. 2012 Apr 1; 109(7):1038-45.
  36. Beroukhim RS, Prakash A, Buechel ER, Cava JR, Dorfman AL, Festa P, Hlavacek AM, Johnson TR, Keller MS, Krishnamurthy R, Misra N, Moniotte S, Parks WJ, Powell AJ, Soriano BD, Srichai MB, Yoo SJ, Zhou J, Geva T. Characterization of cardiac tumors in children by cardiovascular magnetic resonance imaging: a multicenter experience. J Am Coll Cardiol. 2011 Aug 30; 58(10):1044-54.
  37. António MT, Powell AJ, del Nido PJ. Successful surgical excision of a large left ventricular fibroma in a child. Cardiol Young. 2011 Oct; 21(5):595-7.
  38. Capelli AM, Castelletti L, Chen YH, Van der Keyl H, Pucci L, Oliosi B, Salvagno C, Bertani B, Gotti C, Powell A, Mugnaini M. Stable expression and functional characterization of a human nicotinic acetylcholine receptor with a6ß2 properties: discovery of selective antagonists. Br J Pharmacol. 2011 May; 163(2):313-29.
  39. Kipps AK, Graham DA, Harrild DM, Lewis E, Powell AJ, Rhodes J. Longitudinal exercise capacity of patients with repaired tetralogy of fallot. Am J Cardiol. 2011 Jul 1; 108(1):99-105.
  40. Banka P, Bacha E, Powell AJ, Benavidez OJ, Geva T. Outcomes of inferior sinus venosus defect repair. J Thorac Cardiovasc Surg. 2011 Sep; 142(3):517-22.
  41. Prakash A, Travison TG, Fogel MA, Hurwitz LM, Powell AJ, Printz BF, Puchalski MD, Shirali GS, Yoo SJ, Geva T. Relation of size of secondary ventricles to exercise performance in children after fontan operation. Am J Cardiol. 2010 Dec 1; 106(11):1652-6.
  42. Robinson JD, Del Nido PJ, Geggel RL, Perez-Atayde AR, Lock JE, Powell AJ. Left ventricular diastolic heart failure in teenagers who underwent balloon aortic valvuloplasty in early infancy. Am J Cardiol. 2010 Aug 1; 106(3):426-9.
  43. Friedman KG, Rathod RH, Farias M, Graham D, Powell AJ, Fulton DR, Newburger JW, Colan SD, Jenkins KJ, Lock JE. Resource utilization after introduction of a standardized clinical assessment and management plan. Congenit Heart Dis. 2010 Jul-Aug; 5(4):374-81.
  44. Goldstein BH, Bergersen L, Powell AJ, Graham DA, Bacha EA, Lang P. Long-term outcome of surgically repaired unilateral anomalous pulmonary artery origin. Pediatr Cardiol. 2010 Oct; 31(7):944-51.
  45. Rathod RH, Prakash A, Powell AJ, Geva T. Myocardial fibrosis identified by cardiac magnetic resonance late gadolinium enhancement is associated with adverse ventricular mechanics and ventricular tachycardia late after Fontan operation. J Am Coll Cardiol. 2010 Apr 20; 55(16):1721-8.
  46. Harrild DM, Powell AJ, Tran TX, Trang TX, Geva T, Lock JE, Rhodes J, McElhinney DB. Long-term pulmonary regurgitation following balloon valvuloplasty for pulmonary stenosis risk factors and relationship to exercise capacity and ventricular volume and function. J Am Coll Cardiol. 2010 Mar 9; 55(10):1041-7.
  47. Gottlieb D, Kunal T, Emani S, Aikawa E, Brown DW, Powell AJ, Nedder A, Engelmayr GC, Melero-Martin JM, Sacks MS, Mayer JE. In vivo monitoring of function of autologous engineered pulmonary valve. J Thorac Cardiovasc Surg. 2010 Mar; 139(3):723-31.
  48. Prakash A, Powell AJ, Geva T. Multimodality noninvasive imaging for assessment of congenital heart disease. Circ Cardiovasc Imaging. 2010 Jan; 3(1):112-25.
  49. Hollands EC, Dale TJ, Baxter AW, Meadows HJ, Powell AJ, Clare JJ, Trezise DJ. Population patch-clamp electrophysiology analysis of recombinant GABAA alpha1beta3gamma2 channels expressed in HEK-293 cells. J Biomol Screen. 2009 Aug; 14(7):769-80.
  50. Powell AJ. Aortopulmonary collaterals in single-ventricle congenital heart disease: how much do they count? Circ Cardiovasc Imaging. 2009 May; 2(3):171-3.
  51. Strigl S, Beroukhim R, Valente AM, Annese D, Harrington JS, Geva T, Powell AJ. Feasibility of dobutamine stress cardiovascular magnetic resonance imaging in children. J Magn Reson Imaging. 2009 Feb; 29(2):313-9.
  52. Clare JJ, Chen MX, Downie DL, Trezise DJ, Powell AJ. Use of planar array electrophysiology for the development of robust ion channel cell lines. Comb Chem High Throughput Screen. 2009 Jan; 12(1):96-106.
  53. Burch TM, McGowan FX, Kussman BD, Powell AJ, DiNardo JA. Congenital supravalvular aortic stenosis and sudden death associated with anesthesia: what's the mystery? Anesth Analg. 2008 Dec; 107(6):1848-54.
  54. Leonardi B, Margossian R, Colan SD, Powell AJ. Relationship of magnetic resonance imaging estimation of myocardial iron to left ventricular systolic and diastolic function in thalassemia. JACC Cardiovasc Imaging. 2008 Sep; 1(5):572-8.
  55. Moniotte S, Powell AJ, Barnewolt CE, Annese D, Geva T. Prenatal diagnosis of thoracic ectopia cordis by real-time fetal cardiac magnetic resonance imaging and by echocardiography. Congenit Heart Dis. 2008 Mar-Apr; 3(2):128-31.
  56. Valente AM, Powell AJ. Clinical applications of cardiovascular magnetic resonance in congenital heart disease. Magn Reson Imaging Clin N Am. 2007 Nov; 15(4):565-77, vi.
  57. Samyn MM, Powell AJ, Garg R, Sena L, Geva T. Range of ventricular dimensions and function by steady-state free precession cine MRI in repaired tetralogy of Fallot: right ventricular outflow tract patch vs. conduit repair. J Magn Reson Imaging. 2007 Oct; 26(4):934-40.
  58. Meadows J, Powell AJ, Geva T, Dorfman A, Gauvreau K, Rhodes J. Cardiac magnetic resonance imaging correlates of exercise capacity in patients with surgically repaired tetralogy of Fallot. Am J Cardiol. 2007 Nov 1; 100(9):1446-50.
  59. McMahon CJ, Moniotte S, Powell AJ, del Nido PJ, Geva T. Usefulness of magnetic resonance imaging evaluation of congenital left ventricular aneurysms. Am J Cardiol. 2007 Jul 15; 100(2):310-5.
  60. Valente AM, Powell AJ. Clinical applications of cardiovascular magnetic resonance in congenital heart disease. Cardiol Clin. 2007 Feb; 25(1):97-110, vi.
  61. Valente AM, Sena L, Powell AJ, Del Nido PJ, Geva T. Cardiac magnetic resonance imaging evaluation of sinus venosus defects: comparison to surgical findings. Pediatr Cardiol. 2007 Jan-Feb; 28(1):51-6.
  62. Dorfman AL, Odegard KC, Powell AJ, Laussen PC, Geva T. Risk factors for adverse events during cardiovascular magnetic resonance in congenital heart disease. J Cardiovasc Magn Reson. 2007; 9(5):793-8.
  63. Powell AJ, Hansen LK. Gilbert's syndrome in a patient with predominantly negative symptoms of schizophrenia. Int J Psychiatry Clin Pract. 2007; 11(3):239-41.
  64. Knauth AL, Gauvreau K, Powell AJ, Landzberg MJ, Walsh EP, Lock JE, del Nido PJ, Geva T. Ventricular size and function assessed by cardiac MRI predict major adverse clinical outcomes late after tetralogy of Fallot repair. Heart. 2008 Feb; 94(2):211-6.
  65. Prakash A, Garg R, Marcus EN, Reynolds G, Geva T, Powell AJ. Faster flow quantification using sensitivity encoding for velocity-encoded cine magnetic resonance imaging: in vitro and in vivo validation. J Magn Reson Imaging. 2006 Sep; 24(3):676-82.
  66. Peng LF, McElhinney DB, Nugent AW, Powell AJ, Marshall AC, Bacha EA, Lock JE. Endovascular stenting of obstructed right ventricle-to-pulmonary artery conduits: a 15-year experience. Circulation. 2006 Jun 6; 113(22):2598-605.
  67. Sanghavi DM, Flanagan M, Powell AJ, Curran T, Picard S, Rhodes J. Determinants of exercise function following univentricular versus biventricular repair for pulmonary atresia/intact ventricular septum. Am J Cardiol. 2006 Jun 1; 97(11):1638-43.
  68. Wald RM, Powell AJ. Simple congenital heart lesions. J Cardiovasc Magn Reson. 2006; 8(4):619-31.
  69. Pertin M, Ji RR, Berta T, Powell AJ, Karchewski L, Tate SN, Isom LL, Woolf CJ, Gilliard N, Spahn DR, Decosterd I. Upregulation of the voltage-gated sodium channel beta2 subunit in neuropathic pain models: characterization of expression in injured and non-injured primary sensory neurons. J Neurosci. 2005 Nov 23; 25(47):10970-80.
  70. Mantegazza M, Yu FH, Powell AJ, Clare JJ, Catterall WA, Scheuer T. Molecular determinants for modulation of persistent sodium current by G-protein betagamma subunits. J Neurosci. 2005 Mar 30; 25(13):3341-9.
  71. Garg R, Powell AJ, Sena L, Marshall AC, Geva T. Effects of metallic implants on magnetic resonance imaging evaluation of Fontan palliation. Am J Cardiol. 2005 Mar 1; 95(5):688-91.
  72. Nielsen JC, Powell AJ, Gauvreau K, Marcus EN, Prakash A, Geva T. Magnetic resonance imaging predictors of coarctation severity. Circulation. 2005 Feb 8; 111(5):622-8.
  73. Gill CH, Randall A, Bates SA, Hill K, Owen D, Larkman PM, Cairns W, Yusaf SP, Murdock PR, Strijbos PJ, Powell AJ, Benham CD, Davies CH. Characterization of the human HCN1 channel and its inhibition by capsazepine. Br J Pharmacol. 2004 Oct; 143(3):411-21.
  74. Casula MA, Facer P, Powell AJ, Kinghorn IJ, Plumpton C, Tate SN, Bountra C, Birch R, Anand P. Expression of the sodium channel beta3 subunit in injured human sensory neurons. Neuroreport. 2004 Jul 19; 15(10):1629-32.
  75. Tsai-Goodman B, Geva T, Odegard KC, Sena LM, Powell AJ. Clinical role, accuracy, and technical aspects of cardiovascular magnetic resonance imaging in infants. Am J Cardiol. 2004 Jul 1; 94(1):69-74.
  76. Vijayaragavan K, Powell AJ, Kinghorn IJ, Chahine M. Role of auxiliary beta1-, beta2-, and beta3-subunits and their interaction with Na(v)1.8 voltage-gated sodium channel. Biochem Biophys Res Commun. 2004 Jun 25; 319(2):531-40.
  77. Odegard KC, DiNardo JA, Tsai-Goodman B, Powell AJ, Geva T, Laussen PC. Anaesthesia considerations for cardiac MRI in infants and small children. Paediatr Anaesth. 2004 Jun; 14(6):471-6.
  78. Geva T, Sandweiss BM, Gauvreau K, Lock JE, Powell AJ. Factors associated with impaired clinical status in long-term survivors of tetralogy of Fallot repair evaluated by magnetic resonance imaging. J Am Coll Cardiol. 2004 Mar 17; 43(6):1068-74.
  79. Prakash A, Powell AJ, Krishnamurthy R, Geva T. Magnetic resonance imaging evaluation of myocardial perfusion and viability in congenital and acquired pediatric heart disease. Am J Cardiol. 2004 Mar 1; 93(5):657-61.
  80. John VH, Main MJ, Powell AJ, Gladwell ZM, Hick C, Sidhu HS, Clare JJ, Tate S, Trezise DJ. Heterologous expression and functional analysis of rat Nav1.8 (SNS) voltage-gated sodium channels in the dorsal root ganglion neuroblastoma cell line ND7-23. Neuropharmacology. 2004 Mar; 46(3):425-38.
  81. Burbidge SA, Dale TJ, Powell AJ, Whitaker WR, Xie XM, Romanos MA, Clare JJ. Molecular cloning, distribution and functional analysis of the NA(V)1.6. Voltage-gated sodium channel from human brain. Brain Res Mol Brain Res. 2002 Jun 30; 103(1-2):80-90.
  82. Greil GF, Stuber M, Botnar RM, Kissinger KV, Geva T, Newburger JW, Manning WJ, Powell AJ. Coronary magnetic resonance angiography in adolescents and young adults with kawasaki disease. Circulation. 2002 Feb 26; 105(8):908-11.
  83. Meadows LS, Chen YH, Powell AJ, Clare JJ, Ragsdale DS. Functional modulation of human brain Nav1.3 sodium channels, expressed in mammalian cells, by auxiliary beta 1, beta 2 and beta 3 subunits. Neuroscience. 2002; 114(3):745-53.
  84. Greil G, Geva T, Maier SE, Powell AJ. Effect of acquisition parameters on the accuracy of velocity encoded cine magnetic resonance imaging blood flow measurements. J Magn Reson Imaging. 2002 Jan; 15(1):47-54.
  85. Powell AJ, Gauvreau K, Jenkins KJ, Blume ED, Mayer JE, Lock JE. Perioperative risk factors for development of protein-losing enteropathy following a Fontan procedure. Am J Cardiol. 2001 Nov 15; 88(10):1206-9.
  86. Coward K, Jowett A, Plumpton C, Powell A, Birch R, Tate S, Bountra C, Anand P. Sodium channel beta1 and beta2 subunits parallel SNS/PN3 alpha-subunit changes in injured human sensory neurons. Neuroreport. 2001 Mar 5; 12(3):483-8.
  87. Coward K, Aitken A, Powell A, Plumpton C, Birch R, Tate S, Bountra C, Anand P. Plasticity of TTX-sensitive sodium channels PN1 and brain III in injured human nerves. Neuroreport. 2001 Mar 5; 12(3):495-500.
  88. Okuda S, Kikinis R, Geva T, Chung T, Dumanil H, Powell AJ. 3D-shaded surface rendering of gadolinium-enhanced MR angiography in congenital heart disease. Pediatr Radiol. 2000 Aug; 30(8):540-5.
  89. Whitaker WR, Clare JJ, Powell AJ, Chen YH, Faull RL, Emson PC. Distribution of voltage-gated sodium channel alpha-subunit and beta-subunit mRNAs in human hippocampal formation, cortex, and cerebellum. J Comp Neurol. 2000 Jun 19; 422(1):123-39.
  90. Powell AJ, Chung T, Landzberg MJ, Geva T. Accuracy of MRI evaluation of pulmonary blood supply in patients with complex pulmonary stenosis or atresia. Int J Card Imaging. 2000 Jun; 16(3):169-74.
  91. Powell AJ, Maier SE, Chung T, Geva T. Phase-velocity cine magnetic resonance imaging measurement of pulsatile blood flow in children and young adults: in vitro and in vivo validation. Pediatr Cardiol. 2000 Mar-Apr; 21(2):104-10.
  92. Powell AJ, Geva T. Blood flow measurement by magnetic resonance imaging in congenital heart disease. Pediatr Cardiol. 2000 Jan-Feb; 21(1):47-58.
  93. Geva T, Powell AJ, Crawford EC, Chung T, Colan SD. Evaluation of regional differences in right ventricular systolic function by acoustic quantification echocardiography and cine magnetic resonance imaging. Circulation. 1998 Jul 28; 98(4):339-45.
  94. Chartrain M, Hunt G, Horn L, Kirpekar A, Mathre D, Powell A, Wassel L, Nielsen J, Buckland B, Greasham R. Biochemical and physiological characterization of the efrotomycin fermentation. J Ind Microbiol. 1991 Jun; 7(4):293-9.
  95. Kram R, Powell AJ. A treadmill-mounted force platform. J Appl Physiol (1985). 1989 Oct; 67(4):1692-8.
  96. Oldroyd KG, Powell A, Carson P. Dissecting aneurysm of a right-sided descending aorta with a left-sided aortic arch. Int J Cardiol. 1988 Feb; 18(2):271-4.
  97. Mirabella L, Haggerty CM, Passerini T, Piccinelli M, Powell AJ, Del Nido PJ, Veneziani A, Yoganathan AP. Treatment planning for a TCPC test case: a numerical investigation under rigid and moving wall assumptions. Int J Numer Method Biomed Eng. 2013 Feb; 29(2):197-216.
  98. Friedberg MK, Su X, Tworetzky W, Soriano BD, Powell AJ, Marx GR. Validation of 3D echocardiographic assessment of left ventricular volumes, mass, and ejection fraction in neonates and infants with congenital heart disease: a comparison study with cardiac MRI. Circ Cardiovasc Imaging. 2010 Nov; 3(6):735-42.
  99. Rhodes J, Margossian R, Darras BT, Colan SD, Jenkins KJ, Geva T, Powell AJ. Safety and efficacy of carvedilol therapy for patients with dilated cardiomyopathy secondary to muscular dystrophy. Pediatr Cardiol. 2008 Mar; 29(2):343-51.
  100. Sundareswaran KS, Haggerty CM, de Zélicourt D, Dasi LP, Pekkan K, Frakes DH, Powell AJ, Kanter KR, Fogel MA, Yoganathan AP. Visualization of flow structures in Fontan patients using 3-dimensional phase contrast magnetic resonance imaging. J Thorac Cardiovasc Surg. 2012 May; 143(5):1108-16.
  101. Margossian R, Schwartz ML, Prakash A, Wruck L, Colan SD, Atz AM, Bradley TJ, Fogel MA, Hurwitz LM, Marcus E, Powell AJ, Printz BF, Puchalski MD, Rychik J, Shirali G, Williams R, Yoo SJ, Geva T. Comparison of echocardiographic and cardiac magnetic resonance imaging measurements of functional single ventricular volumes, mass, and ejection fraction (from the Pediatric Heart Network Fontan Cross-Sectional Study). Am J Cardiol. 2009 Aug 1; 104(3):419-28.
  102. Agboh KC, Powell AJ, Evans RJ. Characterisation of ATP analogues to cross-link and label P2X receptors. Neuropharmacology. 2009 Jan; 56(1):230-6.
  103. O'Donnell CP, Lock JE, Powell AJ, Perry SB. Compression of pulmonary veins between the left atrium and the descending aorta. Am J Cardiol. 2003 Jan 15; 91(2):248-51.
  104. Friedman KG, McElhinney DB, Colan SD, Porras D, Powell AJ, Lock JE, Brown DW. Left ventricular remodeling and improvement in diastolic function after balloon aortic valvuloplasty for congenital aortic stenosis. Circ Cardiovasc Interv. 2012 Aug 1; 5(4):549-54.
  105. Geva T, Gauvreau K, Powell AJ, Cecchin F, Rhodes J, Geva J, del Nido P. Randomized trial of pulmonary valve replacement with and without right ventricular remodeling surgery. Circulation. 2010 Sep 14; 122(11 Suppl):S201-8.
  106. Lai WW, Gauvreau K, Rivera ES, Saleeb S, Powell AJ, Geva T. Accuracy of guideline recommendations for two-dimensional quantification of the right ventricle by echocardiography. Int J Cardiovasc Imaging. 2008 Oct; 24(7):691-8.
  107. Geva T, Greil GF, Marshall AC, Landzberg M, Powell AJ. Gadolinium-enhanced 3-dimensional magnetic resonance angiography of pulmonary blood supply in patients with complex pulmonary stenosis or atresia: comparison with x-ray angiography. Circulation. 2002 Jul 23; 106(4):473-8.
  108. Brown DW, Gauvreau K, Powell AJ, Lang P, Colan SD, Del Nido PJ, Odegard KC, Geva T. Cardiac magnetic resonance versus routine cardiac catheterization before bidirectional glenn anastomosis in infants with functional single ventricle: a prospective randomized trial. Circulation. 2007 Dec 4; 116(23):2718-25.
  109. Kiaffas MG, Powell AJ, Geva T. Magnetic resonance imaging evaluation of cardiac tumor characteristics in infants and children. Am J Cardiol. 2002 May 15; 89(10):1229-33.
  110. Wald RM, Haber I, Wald R, Valente AM, Powell AJ, Geva T. Effects of regional dysfunction and late gadolinium enhancement on global right ventricular function and exercise capacity in patients with repaired tetralogy of Fallot. Circulation. 2009 Mar 17; 119(10):1370-7.
  111. Moniotte S, Geva T, Perez-Atayde A, Fulton DR, Pigula FA, Powell AJ. Images in cardiovascular medicine. Cardiac hemangioma. Circulation. 2005 Aug 23; 112(8):e103-4.
  112. Williams IA, Sleeper LA, Colan SD, Lu M, Stephenson EA, Newburger JW, Gersony WM, Cohen MS, Cnota JF, Atz AM, Williams RV, Margossian R, Powell AJ, Stylianou MP, Hsu DT. Functional state following the Fontan procedure. Cardiol Young. 2009 Aug; 19(4):320-30.
  113. Mackie AS, Lang P, Powell AJ. Pulmonary atresia with intact ventricular septum coexisting with coarctation of the aorta. Pediatr Cardiol. 2007 Sep-Oct; 28(5):406-8.
  114. Friedman KG, McElhinney DB, Rhodes J, Powell AJ, Colan SD, Lock JE, Brown DW. Left ventricular diastolic function in children and young adults with congenital aortic valve disease. Am J Cardiol. 2013 Jan 15; 111(2):243-9.
  115. Banka P, Geva T, Powell AJ, Geggel R, Lahiri T, Valente AM. Images in cardiovascular medicine. Right aortic arch with aberrant left innominate artery: a rare vascular ring. Circulation. 2009 Jul 21; 120(3):264-5.
  116. Kipps AK, Powell AJ, Levine JC. Muscular infundibular atresia is associated with coronary ostial atresia in pulmonary atresia with intact ventricular septum. Congenit Heart Dis. 2011 Sep-Oct; 6(5):444-50.
  117. Need LR, Powell AJ, del Nido P, Geva T. Coronary echocardiography in tetralogy of fallot: diagnostic accuracy, resource utilization and surgical implications over 13 years. J Am Coll Cardiol. 2000 Oct; 36(4):1371-7.
  118. Rhodes J, Margossian R, Sleeper LA, Barker P, Bradley TJ, Lu M, Fogel M, Harris MA, Lai WW, Powell AJ, Puchalski MD, Shirali G, Colan SD. Non-geometric echocardiographic indices of ventricular function in patients with a Fontan circulation. J Am Soc Echocardiogr. 2011 Nov; 24(11):1213-9.
  119. Valente AM, Gauvreau K, Assenza GE, Babu-Narayan SV, Evans SP, Gatzoulis M, Groenink M, Inuzuka R, Kilner PJ, Koyak Z, Landzberg MJ, Mulder B, Powell AJ, Wald R, Geva T. Rationale and design of an International Multicenter Registry of patients with repaired tetralogy of Fallot to define risk factors for late adverse outcomes: the INDICATOR cohort. Pediatr Cardiol. 2013 Jan; 34(1):95-104.
  120. Soriano BD, Hoch M, Ithuralde A, Geva T, Powell AJ, Kussman BD, Graham DA, Tworetzky W, Marx GR. Matrix-array 3-dimensional echocardiographic assessment of volumes, mass, and ejection fraction in young pediatric patients with a functional single ventricle: a comparison study with cardiac magnetic resonance. Circulation. 2008 Apr 8; 117(14):1842-8.
  121. Tworetzky W, del Nido PJ, Powell AJ, Marshall AC, Lock JE, Geva T. Usefulness of magnetic resonance imaging of left ventricular endocardial fibroelastosis in infants after fetal intervention for aortic valve stenosis. Am J Cardiol. 2005 Dec 1; 96(11):1568-70.
  122. Greil GF, Powell AJ, Gildein HP, Geva T. Gadolinium-enhanced three-dimensional magnetic resonance angiography of pulmonary and systemic venous anomalies. J Am Coll Cardiol. 2002 Jan 16; 39(2):335-41.
  123. Mooij CF, de Wit CJ, Graham DA, Powell AJ, Geva T. Reproducibility of MRI measurements of right ventricular size and function in patients with normal and dilated ventricles. J Magn Reson Imaging. 2008 Jul; 28(1):67-73.
  124. Kutty S, Zhou J, Gauvreau K, Trincado C, Powell AJ, Geva T. Regional dysfunction of the right ventricular outflow tract reduces the accuracy of Doppler tissue imaging assessment of global right ventricular systolic function in patients with repaired tetralogy of Fallot. J Am Soc Echocardiogr. 2011 Jun; 24(6):637-43.
  125. Powell AJ, Lock JE, Keane JF, Perry SB. Prolongation of RV-PA conduit life span by percutaneous stent implantation. Intermediate-term results. Circulation. 1995 Dec 1; 92(11):3282-8.
  126. Powell AJ, Mayer JE, Lang P, Lock JE. Outcome in infants with pulmonary atresia, intact ventricular septum, and right ventricle-dependent coronary circulation. Am J Cardiol. 2000 Dec 1; 86(11):1272-4, A9.
  127. Deborah Chirnomas S, Geukes-Foppen M, Barry K, Braunstein J, Kalish LA, Neufeld EJ, Powell AJ. Practical implications of liver and heart iron load assessment by T2*-MRI in children and adults with transfusion-dependent anemias. Am J Hematol. 2008 Oct; 83(10):781-3.
  128. Powell AJ, Tsai-Goodman B, Prakash A, Greil GF, Geva T. Comparison between phase-velocity cine magnetic resonance imaging and invasive oximetry for quantification of atrial shunts. Am J Cardiol. 2003 Jun 15; 91(12):1523-5, A9.
  129. Cusdin FS, Nietlispach D, Maman J, Dale TJ, Powell AJ, Clare JJ, Jackson AP. The sodium channel {beta}3-subunit induces multiphasic gating in NaV1.3 and affects fast inactivation via distinct intracellular regions. J Biol Chem. 2010 Oct 22; 285(43):33404-12.
  130. Fratz S, Chung T, Greil GF, Samyn MM, Taylor AM, Valsangiacomo Buechel ER, Yoo SJ, Powell AJ. Guidelines and protocols for cardiovascular magnetic resonance in children and adults with congenital heart disease: SCMR expert consensus group on congenital heart disease. J Cardiovasc Magn Reson. 2013 Jun 13; 15:51.
  131. Prakash A, Satiroglu E, Porras D, McElhinney DB, Keane JF, Lock JE, Geva T, King W, Powell AJ. Risk factors for profuse systemic-to-pulmonary artery collateral burden in hypoplastic left heart syndrome. Am J Cardiol. 2013 Aug 1; 112(3):400-4.
  132. Valente AM, Lakdawala NK, Powell AJ, Evans SP, Cirino AL, Orav EJ, MacRae CA, Colan SD, Ho CY. Comparison of echocardiographic and cardiac magnetic resonance imaging in hypertrophic cardiomyopathy sarcomere mutation carriers without left ventricular hypertrophy. Circ Cardiovasc Genet. 2013 Jun; 6(3):230-7.
  133. Dusenbery SM, Jerosch-Herold M, Rickers C, Colan SD, Geva T, Newburger JW, Powell AJ. Myocardial extracellular remodeling is associated with ventricular diastolic dysfunction in children and young adults with congenital aortic stenosis. J Am Coll Cardiol. 2014 May 6; 63(17):1778-85.
  134. Blyth M, Anthony I, Francq B, Brooksbank K, Downie P, Powell A, Jones B, MacLean A, McConnachie A, Norrie J. Diagnostic accuracy of the Thessaly test, standardised clinical history and other clinical examination tests (Apley's, McMurray's and joint line tenderness) for meniscal tears in comparison with magnetic resonance imaging diagnosis. Health Technol Assess. 2015 Aug; 19(62):1-62.
  135. Wald RM, Valente AM, Gauvreau K, Babu-Narayan SV, Assenza GE, Schreier J, Gatzoulis MA, Kilner PJ, Koyak Z, Mulder B, Powell AJ, Geva T. Cardiac magnetic resonance markers of progressive RV dilation and dysfunction after tetralogy of Fallot repair. Heart. 2015 Nov; 101(21):1724-30.
  136. Schlingmann TR, Gauvreau K, Colan SD, Powell AJ. Correction of Doppler Gradients for Pressure Recovery Improves Agreement with Subsequent Catheterization Gradients in Congenital Aortic Stenosis. J Am Soc Echocardiogr. 2015 Dec; 28(12):1410-7.
  137. Slesnick TC, Schreier J, Soriano BD, Kutty S, Nutting AC, Kim DW, Powell AJ, Valente AM. Safety of Magnetic Resonance Imaging After Implantation of Stainless Steel Embolization Coils. Pediatr Cardiol. 2016 Jan; 37(1):62-7.
  138. Pace DF, Dalca AV, Geva T, Powell AJ, Moghari MH, Golland P. Interactive Whole-Heart Segmentation in Congenital Heart Disease. Med Image Comput Comput Assist Interv. 2015 Oct; 9351:80-88.
  139. Moghari MH, Geva T, Powell AJ. Prospective heart tracking for whole-heart magnetic resonance angiography. Magn Reson Med. 2016 Feb 4.
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