Diagnostic and Interventional Radiology
Abdominal Imaging - Pictorial Essay

Transient hepatic attenuation differences at biphasic spiral CT examinations

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Department of Radiology, Adnan Menderes University School of Medicine, Aydın, Turkey

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Department of Radiology, Adnan Menderes University School of Medicine, Aydın, Turkey

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From the Department of Radiology, Adnan Menderes University School of Medicine, Aydın, Turkey

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Department of Radiology, Adnan Menderes University Faculty of Medicine, Aydın, Turkey

Diagn Interv Radiol 2005; 11: 96-101
Read: 527 Downloads: 653 Published: 03 September 2019

Abstract

Transient hepatic attenuation difference (THAD) is a perfusion disorder that can sometimes be observed in hepatic arterial phase of a biphasic spiral CT examination. The involved site of liver by THAD appears as an area of high attenuation on the hepatic arterial phase image and returns to normal attenuation on portal venous phase image. The knowledge of the shape, distribution and causes of THAD is essential to differentiate the THAD from other pathologies such as neoplasm.

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EISSN 1305-3612