Rathachai Kaewlai, M.D.

Division : Diagnostic Radiology, Department of Radiology

Specialty groups : Emergency Radiology

Languages : Thai, English

Field of interests : Emergency, Trauma, Quality assurance

American Board of Radiology (Diagnostic Radiology), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
Clinical Fellowship in Thoracic Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
Clinical Fellowship in Emergency Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
Clinical Fellowship in Body Imaging, Northeastern Ohio Universities of Medicine, Rootstown, OH, USA
Thai Board of General Radiology, Faculty of Medicine Ramathibodi Hospital, Bangkok, Thailand
Doctor of Medicine, Faculty of Medicine Siriraj Hospital, Bangkok, Thailand
American Board of Radiology
Thai Board of General Radiology
Thai medical license
Professional memberships
Medical Council of Thailand
Royal College of Radiologists of Thailand
Radiological Society of Thailand
Thai Emergency Imaging Group
American Society of Emergency Radiology
American College of Radiology
Recent publications
  1. Thungkatikajonkit P, Wongwaisayawan S, Wibulpolprasert A, Viseshsindh W, Kaewlai R. Is Combined Ultrasound with Radiography Sufficient for the Diagnosis of Obstructive Ureteric Stone in Patients with Acute Flank Pain? J Med Ultrasound. 2019 Dec 10;28(2):86-91.
  2. Wongwaisayawan S, Krishna S, Sheikh A, Kaewlai R, Schieda N. Imaging spectrum of traumatic urinary bladder and urethral injuries. Abdom Radiol (NY). 2020 Jul 28.
  3. Jenjitranant P, Tunlayadechanont P, Prachanukool T, Kaewlai R. Correlation between optic nerve sheath diameter measured on imaging with acute pathologies found on computed tomography of trauma patients. Eur J Radiol. 2020 Apr;125:108875.
  4. Koedwut S, Kaewlai R, Sudsang T, Kiranantawat K, Wongwaisayawan S. Clear Sinus Sign on Head CT Scan: Reliable Criterion to Exclude Paranasal Sinus Fracture. J Oral Maxillofac Surg. 2020 Jun;78(6):996.e1-996.e6.
  5. Savatmongkorngul S, Wongwaisayawan S, Kaewlai R. Focused assessment with sonography for trauma: current perspectives. Open Access Emerg Med. 2017 Jul 26;9:57-62.
  6. Abujudeh H, Kaewlai R, Shaqdan K, Bruno MA. Key Principles in Quality and Safety in Radiology. AJR Am J Roentgenol. 2017 Mar;208(3):W101-W109.
  7. Wongwaisayawan S, Kaewlai R, Dattwyler M, Abujudeh HH, Singh AK. Magnetic Resonance of Pelvic and Gastrointestinal Emergencies. Magn Reson Imaging Clin N Am. 2016 May;24(2):419-31.
  8. Wongwaisayawan S, Suwannanon R, Sawatmongkorngul S, Kaewlai R. Emergency Thoracic US: The Essentials. Radiographics. 2016 May-Jun;36(3):640-59.
  9. Sulagaesuan C, Saksobhavivat N, Asavaphatiboon S, Kaewlai R. Reducing emergency CT radiation doses with simple techniques: A quality initiative project. J Med Imaging Radiat Oncol. 2016 Feb;60(1):23-34.
  10. Wongwaisayawan S, Suwannanon R, Prachanukool T, Sricharoen P, Saksobhavivat N, Kaewlai R. Trauma Ultrasound. Ultrasound Med Biol. 2015 Oct;41(10):2543-61.
  11. Kaewlai R, Lertlumsakulsub W, Srichareon P. Body mass index, pain score and Alvarado score are useful predictors of appendix visualization at ultrasound in adults. Ultrasound Med Biol. 2015 Jun;41(6):1605-11.
  12. Manoonchai N, Kaewlai R, Wibulpolprasert A, Boonpramarn U, Tohmee A, Phongkitkarun S. Satisfaction of imaging report rendered in emergency setting: a survey of radiology and referring physicians. Acad Radiol. 2015 Jun;22(6):760-70.
  13. Koseekriniramol V, Kaewlai R. Abdominal wall thickness is not useful to predict appendix visualization on sonography in adult patients with suspected appendicitis. J Clin Ultrasound. 2015 Jun;43(5):269-76.
  14. Piyarom P, Kaewlai R. False-negative appendicitis at ultrasound: nature and association. Ultrasound Med Biol. 2014 Jul;40(7):1483-9.
  15. Kaewlai R, Abujudeh H. Peer review in clinical radiology practice. AJR Am J Roentgenol. 2012 Aug;199(2):W158-62.
  16. Kaewlai R, Abujudeh H. Nephrogenic systemic fibrosis. AJR Am J Roentgenol. 2012 Jul;199(1):W17-23.
  17. Kaewlai R, de Moya MA, Santos A, Asrani AV, Avery LL, Novelline RA. Blunt cardiac injury in trauma patients with thoracic aortic injury. Emerg Med Int. 2011;2011:848013.
  18. Abujudeh H, Kaewlai R, Shah B, Thrall J. Characteristics of falls in a large academic radiology department: occurrence, associated factors, outcomes, and quality improvement strategies. AJR Am J Roentgenol. 2011 Jul;197(1):154-9.
  19. Asrani A, Kaewlai R, Digumarthy S, Gilman M, Shepard JA. Urgent findings on portable chest radiography: what the radiologist should know–self-assessment module. AJR Am J Roentgenol. 2011 Jun;196(6 Suppl):WS37-46.
  20. Asrani A, Kaewlai R, Digumarthy S, Gilman M, Shepard JA. Urgent findings on portable chest radiography: what the radiologist should know–review. AJR Am J Roentgenol. 2011 Jun;196(6 Suppl):S45-61.
  21. Wang Y, Alkasab TK, Narin O, Nazarian RM, Kaewlai R, Kay J, Abujudeh HH. Incidence of nephrogenic systemic fibrosis after adoption of restrictive gadolinium-based contrast agent guidelines. Radiology. 2011 Jul;260(1):105-11.
  22. Kaewlai R. Multidetector-row computed tomography of thoracic trauma. Int J Clin Pract Suppl. 2011 Apr;(171):3-16.
  23. Abujudeh HH, Kaewlai R, McMahon PM, Binder W, Novelline RA, Gazelle GS, Thrall JH. Abdominopelvic CT increases diagnostic certainty and guides management decisions: a prospective investigation of 584 patients in a large academic medical center. AJR Am J Roentgenol. 2011 Feb;196(2):238-43.
  24. Kaewlai R, Greene RE, Asrani AV, Abujudeh HH. The impact of an early-morning radiologist work shift on the timeliness of communicating urgent imaging findings on portable chest radiography. J Am Coll Radiol. 2010 Sep;7(9):715-21.
  25. Kaewlai R, Digumarthy SR, Smith BL, Corben AD, Austen WG Jr, Shepard JA, Sharma A. Significance of internal mammary lymph nodes in patients after mastectomy with tissue-expander reconstruction: a case-control study. Clin Radiol. 2010 Jun;65(6):453-9.
  26. Abujudeh HH, Boland GW, Kaewlai R, Rabiner P, Halpern EF, Gazelle GS, Thrall JH. Abdominal and pelvic computed tomography (CT) interpretation: discrepancy rates among experienced radiologists. Eur Radiol. 2010 Aug;20(8):1952-7.
  27. Abujudeh HH, Kaewlai R, Asfaw BA, Thrall JH. Quality initiatives: Key performance indicators for measuring and improving radiology department performance. Radiographics. 2010 May;30(3):571-80
  28. Maes RM, Abujudeh H, Kaewlai R. E-mail alert system enables communication of important but nonurgent radiologic findings. Radiology. 2010 Mar;254(3):991; author reply 991-2.
  29. Abujudeh HH, Kaewlai R, Kodsi SE, Hamill MA. Technical report: Improving quality of communications in emergency radiology with a computerized whiteboard system. Clin Radiol. 2010 Jan;65(1):56-62.
  30. Abujudeh HH, Kosaraju VK, Kaewlai R. Acute adverse reactions to gadopentetate dimeglumine and gadobenate dimeglumine: experience with 32,659 injections. AJR Am J Roentgenol. 2010 Feb;194(2):430-4.
  31. Abujudeh HH, Rolls H, Kaewlai R, Agarwal S, Gebreananya ZA, Saini S, Schaefer PW, Kay J. Retrospective assessment of prevalence of nephrogenic systemic fibrosis (NSF) after implementation of a new guideline for the use of gadobenate dimeglumine as a sole contrast agent for magnetic resonance examination in renally impaired patients. J Magn Reson Imaging. 2009 Dec;30(6):1335-40.
  32. Kaewlai R, Kurup D, Singh A. Imaging of abdomen and pelvis: uncommon acute pathologies. Semin Roentgenol. 2009 Oct;44(4):228-36.
  33. Abujudeh HH, Kaewlai R, Kagan A, Chibnik LB, Nazarian RM, High WA, Kay J. Nephrogenic systemic fibrosis after gadopentetate dimeglumine exposure: case series of 36 patients. Radiology. 2009 Oct;253(1):81-9.
  34. bujudeh HH, Kaewlai R. Radiology failure mode and effect analysis: what is it? Radiology. 2009 Aug;252(2):544-50.
  35. Abujudeh HH, Kaewlai R, Choy G, Whelton DG, Rosenthal DI. Important imaging finding e-mail alert system: experience after 3 years of implementation. Radiology. 2009 Sep;252(3):747-53.
  36. Abujudeh HH, Kaewlai R, Farsad K, Orr E, Gilman M, Shepard JA. Computed tomography pulmonary angiography: an assessment of the radiology report. Acad Radiol. 2009 Nov;16(11):1309-15.
  37. Abujudeh HH, Gee MS, Kaewlai R. In emergency situations, should serum creatinine be checked in all patients before performing second contrast CT examinations within 24 hours? J Am Coll Radiol. 2009 Apr;6(4):268-73.
  38. Kaewlai R, Avery LL, Asrani AV, Abujudeh HH, Sacknoff R, Novelline RA. Multidetector CT of carpal injuries: anatomy, fractures, and fracture-dislocations. Radiographics. 2008 Oct;28(6):1771-84.
  39. Kaewlai R, Avery LL, Asrani AV, Novelline RA. Multidetector CT of blunt thoracic trauma. Radiographics. 2008 Oct;28(6):1555-70.
  40. Lam M, Singh A, Kaewlai R, Novelline RA. Magnetic resonance of acute appendicitis: pearls and pitfalls. Curr Probl Diagn Radiol. 2008 Mar-Apr;37(2):57-66.
  41. Singh AK, Gonzalez-Torrez P, Kaewlai R, Tabatabaei S, Harisinghani MG. Imaging of penile neoplasm. Semin Ultrasound CT MR. 2007 Aug;28(4):287-96.
  42. Kaewlai R, Srisuwan T, Prasitvoranant W, Meennuch W, Yenarkarn P, Kitayaporn D, Chuapetcharasopon C. Radiologic findings in tsunami trauma: experience with 225 patients injured in the 2004 tsunami. Emerg Radiol. 2007 Nov;14(6):395-402.
  43. Asrani A, Novelline R, Abujudeh H, Lawrason J, Kaewlai R. Intramural gastric abscess–preoperative diagnosis with CT. Emerg Radiol. 2007 Sep;14(4):253-6.
  44. Kaewlai R, Nazinitsky KJ. Acute colonic diverticulitis in a community-based hospital: CT evaluation in 138 patients. Emerg Radiol. 2007 Jan;13(4):171-9.