Hepatic perfusion abnormalities during CT angiography: Detection and interpretation

Conference · Sun Jun 01 04:00:00 EDT 1986 · Radiology; (United States)

OSTI ID:6718593

Freeny, P C; Marks, W M

Twenty-seven perfusion abnormalities were detected in 17 of 50 patients who underwent computed tomographic angiography (CTA) of the liver. All but one of the perfusion abnormalities occurred in patients with primary or metastatic liver tumors. Perfusion abnormalities were lobar in nine cases, segmental in 11, and subsegmental in seven; 14 were hypoperfusion and 13 were hyperperfusion abnormalities. The causes for the abnormalities included nonperfusion of a replaced hepatic artery (n = 11), cirrhosis and nodular regeneration (n = 3), altered hepatic hemodynamics (e.g., siphoning, laminar flow) caused by tumor (n = 7), contrast media washout from a nonperfused vessel (n = 1), compression of adjacent hepatic parenchyma (n = 1), and unknown (n = 4). Differentiation of perfusion abnormalities from tumor usually can be made by comparing the morphology of the known tumor with the suspected perfusion abnormality, changes of each on delayed CTA scans, and review of initial angiograms and other imaging studies.

• Research Organization: Dept. of Radiology, Mason Clinic, P.O. Box 900, Seattle, WA 98111
• OSTI ID: 6718593
• Report Number(s): CONF-861136-
• Conference Information: Journal Name: Radiology; (United States) Journal Volume: 159:3
• Country of Publication: United States
• Language: English

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62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
CAT SCANNING
COMPUTERIZED TOMOGRAPHY
DATA ANALYSIS
DETECTION
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
DISEASES
GLANDS
LIVER
MEDICINE
MORPHOLOGICAL CHANGES
MORPHOLOGY
NEOPLASMS
NUCLEAR MEDICINE
ORGANS
PATHOLOGICAL CHANGES
RADIOLOGY
TOMOGRAPHY