Role of EPI in Diagnosing Cavernous Hemangioma & Small HCC: Comparision with Fast T2-Weighted MR Imaging.
10.3348/jkrs.1998.38.5.849
- Author:
Suk KIM
1
;
Jun Woo LEE
;
Chang Won KIM
;
Hyun Woo JUNG
;
Sang Yoel CHOI
;
Suck Hong LEE
;
Byung Soo KIM
Author Information
1. Department of diagnostic Radiology, College of Medicine, Pusan National University.
- Publication Type:Original Article
- Keywords:
Liver neoplasms, MR;
Magnetic resonance(MR), pulse sequence;
Magnetic resonance(MR), tissue characterization;
Magnetic resonance(MR), technology
- MeSH:
Carcinoma, Hepatocellular;
Diagnosis;
Hemangioma;
Hemangioma, Cavernous*;
Humans;
Magnetic Resonance Imaging*;
Noise;
Retrospective Studies
- From:Journal of the Korean Radiological Society
1998;38(5):849-855
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare single-shot echo-planar MR imaging(EPI) with breath-hold fast T2-weighted imaging(HASTEor Turbo spin-echo T2WI) for evaluation of the role of EPI in distinguishing small hepatocellular carcinoma fromcavernous hemangioma. MATERIALS AND METHODS: We retrospectively evaluated MR images of 35 patients (21 cases ofsmall HCC and 14 cases of cavernous hemangioma). EPI and breath-hold fast T2WI images were obtained and comparedon the basis of lesion detection sensitivity, lesion-to-liver signal intensity ratio(SIR), contrast ratio(CT), andlesion-to-liver contrast to noise ratio(CNR). RESULTS: For the detection of small HCC, the sensitivity of EPI andbreath-hold fast T2WI were equal in 14 of 21 cases(71.4%). The detection sensitivity of cavernous hemangioma withEPI and breath-hold fast T2WI was 100%(14/14). Mean SIR on breath-hold fast T2WI was 2.02+/-0.45 for small HCC and3.65+/-0.97 for cavernous hemangioma; on EPI, the corresponding figures wer 2.91+/-0.57 and 6.98+/-1.37. Mean CR onbreath-hold fast T2WI was 1.16+/-0.58 for small HCC and 2.65+/-0.57 for cavernous hemangioma; On EPI, the figuresobtained were 2.27+/-0.52 and 6.26+/-2.19, respectively. Mean CNR on breath-hold fast T2WI was 14.24+/- 4.098 forsmall HCC and 50.28+/-10.96 for cavernous hemangioma, while on EPI, the corresponding figures were 13.84+/-3.02 and45.44+/-11.21. CONCLUSION: In detecting focal hepatic mass, the sensitivity of EPI and breath-hold fast T2WI arecomparable; for the diagnosis of small HCC and cavernous hemangioma, EPI can provide additional information.
