Hepatic perfusion abnormalities during CT angiography: Detection and interpretation
Abstract
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.
- Authors:
- Publication Date:
- Research Org.:
- Dept. of Radiology, Mason Clinic, P.O. Box 900, Seattle, WA 98111
- OSTI Identifier:
- 6718593
- Report Number(s):
- CONF-861136-
Journal ID: CODEN: RADLA; TRN: 87-013290
- Resource Type:
- Conference
- Journal Name:
- Radiology; (United States)
- Additional Journal Information:
- Journal Volume: 159:3; Conference: 72. scientific assembly and annual meeting of RSNA, Chicago, IL, USA, 30 Nov 1986
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 62 RADIOLOGY AND NUCLEAR MEDICINE; LIVER; BIOMEDICAL RADIOGRAPHY; CAT SCANNING; BLOOD VESSELS; COMPUTERIZED TOMOGRAPHY; DATA ANALYSIS; DETECTION; MORPHOLOGICAL CHANGES; MORPHOLOGY; NEOPLASMS; PATHOLOGICAL CHANGES; BODY; CARDIOVASCULAR SYSTEM; DIAGNOSTIC TECHNIQUES; DIGESTIVE SYSTEM; DISEASES; GLANDS; MEDICINE; NUCLEAR MEDICINE; ORGANS; RADIOLOGY; TOMOGRAPHY; 550603* - Medicine- External Radiation in Therapy- (1980-); 550602 - Medicine- External Radiation in Diagnostics- (1980-)
Citation Formats
Freeny, P C, and Marks, W M. Hepatic perfusion abnormalities during CT angiography: Detection and interpretation. United States: N. p., 1986.
Web.
Freeny, P C, & Marks, W M. Hepatic perfusion abnormalities during CT angiography: Detection and interpretation. United States.
Freeny, P C, and Marks, W M. 1986.
"Hepatic perfusion abnormalities during CT angiography: Detection and interpretation". United States.
@article{osti_6718593,
title = {Hepatic perfusion abnormalities during CT angiography: Detection and interpretation},
author = {Freeny, P C and Marks, W M},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6718593},
journal = {Radiology; (United States)},
number = ,
volume = 159:3,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 1986},
month = {Sun Jun 01 00:00:00 EDT 1986}
}