Undergraduate Degree

  • Hobart College , 1991 , Geneva , NY

Medical School

  • Upstate Medical University , 1995 , Syracuse , NY


  • Malden Hospital , 1996 , Malden , MA


  • Tufts University School of Medicine , 2000 , Boston , MA


Pediatric Radiology
  • Boston Children's Hospital , 2002 , Boston , MA


I received my B.S. degree from Hobart College, and my M.D. degree from Upstate Medical University in Syracuse, New York. I completed a diagnostic radiology residency at Tufts Medical Center, and a fellowship in pediatric radiology at Boston Children's Hospital.  I’m currently an associate professor of radiology at Harvard Medical School, medical director of computed tomography, physician director for radiation safety, and division chief of abdominal imaging at Boston Children’s Hospital. My research interests include CT dose optimization, abdominal imaging and musculoskeletal ultrasound.  I am a member of the Image Gently® Steering Committee, and will be the Secretary of the Society for Pediatric Radiology (SPR) from 2016-2019.


  • American Board of Radiology, Diagnostic Radiology
  • American Board of Radiology, Pediatric Radiology


Publications powered by Harvard Catalyst Profiles

  1. The impact of social distancing during the COVID-19 pandemic on rates of pediatric idiopathic intussusception. Pediatr Radiol. 2021 Oct 09. View abstract
  2. The pediatric stomach - congenital abnormalities. Pediatr Radiol. 2021 Aug 05. View abstract
  3. Assessing and conveying risks and benefits of imaging in neonates using ionizing radiation and sedation/anesthesia. Pediatr Radiol. 2021 Jul 20. View abstract
  4. Acute pancreatitis in children: a review with clinical perspectives to enhance imaging interpretation. Pediatr Radiol. 2021 Oct; 51(11):1970-1982. View abstract
  5. Relationship between carbohydrate intake and oral glucose tolerance test results among pregnant women. Diabetes Res Clin Pract. 2021 Jun; 176:108869. View abstract
  6. Guidelines for expert testimony in pediatric radiology. Pediatr Radiol. 2021 06; 51(7):1275-1280. View abstract
  7. Free-breathing radial stack-of-stars three-dimensional Dixon gradient echo sequence in abdominal magnetic resonance imaging in sedated pediatric patients. Pediatr Radiol. 2021 Aug; 51(9):1645-1653. View abstract
  8. Current State of Imaging of Pediatric Pancreatitis: AJR Expert Panel Narrative Review. AJR Am J Roentgenol. 2021 08; 217(2):265-277. View abstract
  9. Should I irradiate with computed tomography or sedate for magnetic resonance imaging? Pediatr Radiol. 2021 Mar 12. View abstract
  10. Leveraging the Combined Predictive Value of Ultrasound and Laboratory Data to Reduce Radiation Exposure and Resource Utilization in Children with Suspected Appendicitis. J Surg Res. 2021 01; 257:529-536. View abstract
  11. Imaging features of pathologically proven pediatric splenic masses. Pediatr Radiol. 2020 08; 50(9):1284-1292. View abstract
  12. The pediatric stomach - masses and mass-like pathology. Pediatr Radiol. 2020 08; 50(9):1180-1190. View abstract
  13. Stresses and anxieties in the time of the COVID-19 pandemic - what we can learn. Pediatr Radiol. 2020 07; 50(8):1052-1054. View abstract
  14. Wellness in pediatric radiology: lessons learned in a time of pandemic. Pediatr Radiol. 2020 06; 50(7):898-899. View abstract
  15. Air contrast enema reduction of single and recurrent ileocolic intussusceptions in children: patterns, management and outcomes. Pediatr Radiol. 2020 05; 50(5):664-672. View abstract
  16. Improving Low-Dose Pediatric Abdominal CT by Using Convolutional Neural Networks. Radiol Artif Intell. 2019 Nov 27; 1(6):e180087. View abstract
  17. Nathan Thorne Griscom, MD (1931-2019). Pediatr Radiol. 2020 Jan; 50(1):148-149. View abstract
  18. Intravenous gadolinium-based hepatocyte-specific contrast agents (HSCAs) for contrast-enhanced liver magnetic resonance imaging in pediatric patients: what the radiologist should know. Pediatr Radiol. 2019 09; 49(10):1256-1268. View abstract
  19. Pediatric radiologists and burnout: identifying stressors and moving forward. Pediatr Radiol. 2019 05; 49(6):710-711. View abstract
  20. Practical administration of intravenous contrast media in children: screening, prophylaxis, administration and treatment of adverse reactions. Pediatr Radiol. 2019 04; 49(4):433-447. View abstract
  21. Curved planar reformatting and convolutional neural network-based segmentation of the small bowel for visualization and quantitative assessment of pediatric Crohn's disease from MRI. J Magn Reson Imaging. 2019 06; 49(6):1565-1576. View abstract
  22. Correction to: Ionizing radiation from computed tomography versus anesthesia for magnetic resonance imaging in infants and children: patient safety considerations. Pediatr Radiol. 2018 03; 48(3):454. View abstract
  23. Ionizing radiation from computed tomography versus anesthesia for magnetic resonance imaging in infants and children: patient safety considerations. Pediatr Radiol. 2018 01; 48(1):21-30. View abstract
  24. How we read pediatric PET/CT: indications and strategies for image acquisition, interpretation and reporting. Cancer Imaging. 2017 Nov 07; 17(1):28. View abstract
  25. The radiological home: Pediatric anesthesiologist's role in risk assessment for imaging procedures. Paediatr Anaesth. 2017 09; 27(9):878-879. View abstract
  26. Operational and Dosimetric Aspects of Pediatric PET/CT. J Nucl Med. 2017 09; 58(9):1360-1366. View abstract
  27. Development of a Standardized Kalamazoo Communication Skills Assessment Tool for Radiologists: Validation, Multisource Reliability, and Lessons Learned. AJR Am J Roentgenol. 2017 Aug; 209(2):351-357. View abstract
  28. Motion-robust parameter estimation in abdominal diffusion-weighted MRI by simultaneous image registration and model estimation. Med Image Anal. 2017 Jul; 39:124-132. View abstract
  29. Advances in the Decision to Image or Not to Image. JAMA Oncol. 2017 04 01; 3(4):564-565. View abstract
  30. Initial response of the European Society of Paediatric Radiology and Society for Pediatric Radiology to the Swedish Agency for Health Technology Assessment and Assessment of Social Services' document on the triad of shaken baby syndrome. Pediatr Radiol. 2017 04; 47(4):369-371. View abstract
  31. Pediatric Chest CT Diagnostic Reference Ranges: Development and Application. Radiology. 2017 07; 284(1):219-227. View abstract
  32. Practical use and pitfalls of hepatocyte-specific contrast agents (HSCAs) for pediatric hepatic and biliary magnetic resonance imaging. Abdom Radiol (NY). 2017 02; 42(2):502-520. View abstract
  33. Quality of pediatric abdominal CT scans performed at a dedicated children's hospital and its referring institutions: a multifactorial evaluation. Pediatr Radiol. 2017 Apr; 47(4):391-397. View abstract
  34. Imaging in the diagnosis of pediatric urolithiasis. Pediatr Radiol. 2017 Jan; 47(1):5-16. View abstract
  35. Selecting appropriate gastroenteric contrast media for diagnostic fluoroscopic imaging in infants and children: a practical approach. Pediatr Radiol. 2017 Apr; 47(4):372-381. View abstract
  36. Spatially-constrained probability distribution model of incoherent motion (SPIM) for abdominal diffusion-weighted MRI. Med Image Anal. 2016 08; 32:173-83. View abstract
  37. The Use of Enteric Contrast Media for Diagnostic CT, MRI, and Ultrasound in Infants and Children: A Practical Approach. AJR Am J Roentgenol. 2016 May; 206(5):973-9. View abstract
  38. Size-based protocol optimization using automatic tube current modulation and automatic kV selection in computed tomography. J Appl Clin Med Phys. 2016 01 08; 17(1):328-341. View abstract
  39. Size-based protocol optimization using automatic tube current modulation and automatic kV selection in computed tomography. J Appl Clin Med Phys. 2016 Jan; 17(1):328-341. View abstract
  40. Imaging findings of Hoffa's fat pad herniation. Pediatr Radiol. 2016 Apr; 46(4):508-12. View abstract
  41. Effect of Reduction in the Use of Computed Tomography on Clinical Outcomes of Appendicitis. JAMA Pediatr. 2015 Aug; 169(8):755-60. View abstract
  42. Spatially constrained incoherent motion method improves diffusion-weighted MRI signal decay analysis in the liver and spleen. Med Phys. 2015 Apr; 42(4):1895-903. View abstract
  43. Pediatric CT dose reduction for suspected appendicitis: a practice quality improvement project using artificial gaussian noise--part 2, clinical outcomes. AJR Am J Roentgenol. 2015 Mar; 204(3):636-44. View abstract
  44. Enthesitis as a component of dactylitis in psoriatic juvenile idiopathic arthritis: histology of an established clinical entity. Pediatr Rheumatol Online J. 2015; 13:7. View abstract
  45. Integration of ultrasound findings and a clinical score in the diagnostic evaluation of pediatric appendicitis. J Pediatr. 2015 May; 166(5):1134-9. View abstract
  46. Use of White Blood Cell Count and Polymorphonuclear Leukocyte Differential to Improve the Predictive Value of Ultrasound for Suspected Appendicitis in Children. J Am Coll Surg. 2015 Jun; 220(6):1010-7. View abstract
  47. Pediatric CT dose reduction for suspected appendicitis: a practice quality improvement project using artificial Gaussian noise--part 1, computer simulations. AJR Am J Roentgenol. 2015 Jan; 204(1):W86-94. View abstract
  48. Motion Compensated Abdominal Diffusion Weighted MRI by Simultaneous Image Registration and Model Estimation (SIR-ME). Med Image Comput Comput Assist Interv. 2015; 9351:501-9. View abstract
  49. Practice patterns for the use of iodinated i.v. contrast media for pediatric CT studies: a survey of the Society for Pediatric Radiology. AJR Am J Roentgenol. 2014 Apr; 202(4):872-9. View abstract
  50. Radiology trainees' comfort with difficult conversations and attitudes about error disclosure: effect of a communication skills workshop. J Am Coll Radiol. 2014 Aug; 11(8):781-7. View abstract
  51. The effective use of acai juice, blueberry juice and pineapple juice as negative contrast agents for magnetic resonance cholangiopancreatography in children. Pediatr Radiol. 2014 Jul; 44(7):883-7. View abstract
  52. Diagnostic reference ranges for pediatric abdominal CT. Radiology. 2013 Jul; 268(1):208-18. View abstract
  53. US diagnosis of pediatric muscle hernias of the lower extremities. Pediatr Radiol. 2013 Mar; 43 Suppl 1:S2-7. View abstract
  54. Pediatric musculoskeletal imaging: beyond the basics. Pediatr Radiol. 2013 Mar; 43 Suppl 1:S1. View abstract
  55. Ultrasound evaluation of superficial lumps and bumps of the extremities in children: a 5-year retrospective review. Pediatr Radiol. 2013 Mar; 43 Suppl 1:S23-40. View abstract
  56. Musculoskeletal ultrasonography of the lower extremities in infants and children. Pediatr Radiol. 2013 Mar; 43 Suppl 1:S8-22. View abstract
  57. Water-bath method for sonographic evaluation of superficial structures of the extremities in children. Pediatr Radiol. 2013 Mar; 43 Suppl 1:S41-7. View abstract
  58. Reliable estimation of incoherent motion parametric maps from diffusion-weighted MRI using fusion bootstrap moves. Med Image Anal. 2013 Apr; 17(3):325-36. View abstract
  59. Image Gently 5 years later: what goals remain to be accomplished in radiation protection for children? AJR Am J Roentgenol. 2012 Sep; 199(3):477-9. View abstract
  60. Characterization of fast and slow diffusion from diffusion-weighted MRI of pediatric Crohn's disease. J Magn Reson Imaging. 2013 Jan; 37(1):156-63. View abstract
  61. In vivo assessment of optimal b-value range for perfusion-insensitive apparent diffusion coefficient imaging. Med Phys. 2012 Aug; 39(8):4832-9. View abstract
  62. Diagnostic imaging and negative appendectomy rates in children: effects of age and gender. Pediatrics. 2012 May; 129(5):877-84. View abstract
  63. Reply to commentary--'CT radiation dose reduction: can we do harm by doing good?'. Pediatr Radiol. 2012 Apr; 42(4):399-401. View abstract
  64. Reliable assessment of perfusivity and diffusivity from diffusion imaging of the body. Med Image Comput Comput Assist Interv. 2012; 15(Pt 1):1-9. View abstract
  65. Advanced radiologic imaging for pediatric appendicitis, 2005-2009: trends and outcomes. J Pediatr. 2012 Jun; 160(6):1034-8. View abstract
  66. Image Gently: progress and challenges in CT education and advocacy. Pediatr Radiol. 2011 Sep; 41 Suppl 2:461-6. View abstract
  67. ALARA (as low as reasonably achievable) CT 2011--executive summary. Pediatr Radiol. 2011 Sep; 41 Suppl 2:453-5. View abstract
  68. CT dose reduction in practice. Pediatr Radiol. 2011 Sep; 41 Suppl 2:488-92. View abstract
  69. Approaches to promotion and implementation of action on Radiation Protection for children. Radiat Prot Dosimetry. 2011 Sep; 147(1-2):137-41. View abstract
  70. Has pediatric CT at children's hospitals reached its peak? AJR Am J Roentgenol. 2010 May; 194(5):1194-6. View abstract
  71. Image gently: Ten steps you can take to optimize image quality and lower CT dose for pediatric patients. AJR Am J Roentgenol. 2010 Apr; 194(4):868-73. View abstract
  72. Nonionic iodinated intravenous contrast material-related reactions: incidence in large urban children's hospital--retrospective analysis of data in 12,494 patients. Radiology. 2009 Mar; 250(3):674-81. View abstract
  73. Intraplacental choriocarcinoma arising in a second trimester placenta with partial hydatidiform mole. Int J Gynecol Pathol. 2008 Apr; 27(2):247-51. View abstract
  74. A candidate precursor to pelvic serous cancer (p53 signature) and its prevalence in ovaries and fallopian tubes from women with BRCA mutations. Gynecol Oncol. 2008 May; 109(2):168-73. View abstract
  75. The Image Gently campaign: working together to change practice. AJR Am J Roentgenol. 2008 Feb; 190(2):273-4. View abstract
  76. The 'Image Gently' campaign: increasing CT radiation dose awareness through a national education and awareness program. Pediatr Radiol. 2008 Mar; 38(3):265-9. View abstract
  77. Imaging in pediatric blunt abdominal trauma. Semin Roentgenol. 2008 Jan; 43(1):72-82. View abstract
  78. Overexpression of laminin receptor 1 on decidual cells in partial and complete mole. Gynecol Oncol. 2008 Jan; 108(1):121-5. View abstract
  79. Congenital and developmental pancreatic anomalies: ultrasound, computed tomography, and magnetic resonance imaging features. Semin Ultrasound CT MR. 2007 Oct; 28(5):395-401. View abstract
  80. Immune cell profiling in normal pregnancy, partial and complete molar pregnancy. Gynecol Oncol. 2007 Nov; 107(2):292-7. View abstract
  81. Primary fallopian tube malignancies in BRCA-positive women undergoing surgery for ovarian cancer risk reduction. J Clin Oncol. 2007 Sep 01; 25(25):3985-90. View abstract
  82. Ingestion of magnetic foreign bodies causing multiple bowel perforations. Pediatr Radiol. 2007 Sep; 37(9):933-6. View abstract
  83. Intraepithelial carcinoma of the fimbria and pelvic serous carcinoma: Evidence for a causal relationship. Am J Surg Pathol. 2007 Feb; 31(2):161-9. View abstract
  84. 3D multidetector CT angiographic evaluation of extralobar pulmonary sequestration with anomalous venous drainage into the left internal mammary vein in a paediatric patient. Br J Radiol. 2006 Sep; 79(945):e99-102. View abstract
  85. Appendicitis in young children: imaging experience and clinical outcomes. AJR Am J Roentgenol. 2006 Apr; 186(4):1158-64. View abstract
  86. CT for suspected appendicitis in children: an analysis of diagnostic errors. Pediatr Radiol. 2006 Apr; 36(4):331-7. View abstract
  87. The tubal fimbria is a preferred site for early adenocarcinoma in women with familial ovarian cancer syndrome. Am J Surg Pathol. 2006 Feb; 30(2):230-6. View abstract
  88. Clinical and imaging mimickers of acute appendicitis in the pediatric population. AJR Am J Roentgenol. 2006 Jan; 186(1):67-74. View abstract
  89. Desmoplastic small round cell tumor of the kidney in a pediatric patient: sonographic and multiphase CT findings. AJR Am J Roentgenol. 2005 Nov; 185(5):1347-9. View abstract
  90. Disorders of the pediatric pancreas: imaging features. Pediatr Radiol. 2005 Apr; 35(4):358-73; quiz 457. View abstract
  91. CT of the pediatric esophagus. AJR Am J Roentgenol. 2003 Nov; 181(5):1391-6. View abstract
  92. CT of appendicitis in children. Radiology. 2002 Aug; 224(2):325-32. View abstract
  93. The drooping lily sign. Radiology. 2001 Apr; 219(1):226-8. View abstract
  94. The development of hypertrophic pyloric stenosis in a patient with prostaglandin-induced foveolar hyperplasia. Pediatr Radiol. 1999 Oct; 29(10):748-51. View abstract