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Dual-energy-CT of hypervascular liver lesions in patients with HCC: investigation of image quality and sensitivity.

Abstract：

OBJECTIVE:To investigate dual-energy CT of hypervascular liver lesions in patients with HCC. METHODS:Forty patients with hepatocellular carcinomas were investigated with abdominal dual-energy CT. In each patient unenhanced and contrast-enhanced imaging with arterial und portovenous delay were performed. Hypervascular lesions were documented on arterial phase 80-kVp images, 140-kVp images, and the averaged arterial images by two radiologists. Subjective image quality (5-point scale, from 5 [excellent] to 1 [not interpretable]) was rated on all images. RESULTS:The mean number of hypervascular HCC lesions detected was 3.37 ± 1.28 on 80-kVp images (p < 0.05), 1.43 ± 1.13 on 140-kVp images (p < 0.05), and 2.57 ± 1.2 on averaged images. The image quality was 0.3 ± 0.5 for 80-kVp (p < 0.05), 1.6 ± 0.5 for 140-kVp (p < 0.05) and 3.2 ± 0.4 for the averaged images. CONCLUSION:Low-kVp images of dual-energy datasets are more sensitive in detecting hypervascular liver lesions. However, this increase in sensitivity goes along with a decrease in the subjective image quality of low-kVp images.

journal_name

Eur Radiol

journal_title

European radiology

authors

Altenbernd J,Heusner TA,Ringelstein A,Ladd SC,Forsting M,Antoch G

doi

10.1007/s00330-010-1964-7

subject

Has Abstract

pub_date

2011-04-01 00:00:00

pages

738-43

issue

4

eissn

0938-7994

issn

1432-1084

journal_volume

21

pub_type

杂志文章

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