J Korean Radiol Soc.
1994 Jan;30(1):113-118.
Enhancement Patterns of Hepatic Metastasis from Stomach Cancer at Multi-phase Incremental Bolus Dynamic CT
Abstract
- PURPOSE
The purpose of our study was to characterize the enhancing patterns of hepatic metastasis from
gastric adenocarinoma using multi-phase incremental bolus dynamic CT with obtained both in early and late
phase contrast scan and to evaluate the its advantages.
METHODS
AND MATERIALS: Of 33 cases of multi-phase incremental bolus dynamic CT with proved hepatic~metastasis
from gastric adenocarinoma, we classified dynamic enhancement patterns as three types according
to early phase contrast enhancement, and then analized the late phase contrast enhancement, more metastasis
detection, segmental abnormal arterial perfusions and correlation between pathologic type.
RESULTS
Type I (totally hypodense lesion) was in 18 patients(55%), type II (peripheral high density area)
was seen in 13 patients (39%), and type III (near totally hyperdense lesion) was seen in two patients(6%). But in
late phase, masses showed totally hypodense area in 26 patients(79%), central high with peripheral low density
area(PLDA) in six patients(18%) and totally isodense in one patient(3%). More metastatic masses were
detected with early phase in 11 patients(33%) as compared with late phase contrast. Segmental arterial
hyperperfusion around the lesions, which could represent intrahepatic portal branch invasion, was seen in 10
patients(30%). There was no correlation between pathologic type and enhancement pattern of lesions.
CONCLUSION
Multi-phase incremental bolus dynamic CT could represent variable hemodynamic changes of
hepatic metastatic masses and was useful to evaluate the qualitative and quantitative analysis of hepatic
metastases.