title: Reversible heterogeneous arterial phase liver perfusion associated with transient acute hepatitis: findings on gadolinium-enhanced MRI.
abstract: OBJECTIVE
  To assess a possible correlation between active acute hepatitis and the development of abnormal liver perfusion demonstrated as heterogeneous enhancement on arterial phase gadolinium-enhanced MRI. Dynamically-enhanced MRI of the liver can detect reversible perfusion abnormalities that correlate with acute hepatitis.
  
  
  METHODS
  Six patients presenting with symptoms and clinical findings in keeping with transient acute hepatitis underwent serial MRI of the liver throughout the course of the disease. Serial liver enzyme analysis was performed for all six patients, and histopathology was assessed for three patients. Imaging included gadolinium-enhanced arterial and venous-phase gradient-echo sequences.
  
  
  RESULTS
  Arterial phase gadolinium-enhanced MRI showed abnormal irregular liver perfusion in the setting of acute hepatitis, and the degree of irregularity, as well as the persistence of irregular enhancement into the venous phase, correlated with the clinical severity of the disease.
  
  
  CONCLUSIONS
  Acute hepatitis can cause irregular enhancement of the liver on arterial-phase, gadolinium-enhanced, gradient-echo MRI, a reversible finding that improves with clinical improvement of the disease.
authors.affiliation: Department of Radiology, Emory University, 1364 Clifton Road NE, Room AT620, Atlanta, GA 30322, USA. Diego_Martin@emoryhealthcare.org
authors.forename: Diego R
authors.initials: DR
authors.lastname: Martin
authors.forename: Donald
authors.initials: D
authors.lastname: Seibert
authors.forename: Ming
authors.initials: M
authors.lastname: Yang
authors.forename: Khalil
authors.initials: K
authors.lastname: Salman
authors.forename: Mathis P
authors.initials: MP
authors.lastname: Frick
mesh_terms: D000208:Acute Disease; D000328:Adult; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D019786:Gadolinium DTPA; D006505:Hepatitis / Q000175:diagnosis* / Q000503:physiopathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008099:Liver / Q000098:blood supply / Q000201:enzymology / Q000473:pathology*; D008102:Liver Circulation; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA