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01-09-2010 | Hepatobiliary-Pancreas

Liver virtual non-enhanced CT with dual-source, dual-energy CT: a preliminary study

Authors: Long-Jiang Zhang, Jin Peng, Sheng-Yong Wu, Z. Jane Wang, Xin-Sheng Wu, Chang-Sheng Zhou, Xue-Man Ji, Guang-Ming Lu

Published in: European Radiology | Issue 9/2010

Abstract

Purpose

To compare virtual non-enhanced liver CT (VNCT) from dual-energy CT (DECT) with true non-enhanced liver CT (TNCT) in patients.

Methods

A total of 102 patients underwent multi-phase abdominal CT. Liver arterial VNCT (VNCT_A) and portovenous VNCT (VNCT_V) images were derived from the arterial and portovenous DECT data. The mean CT number, signal to noise ratio (SNR), image quality, contrast to noise (CNR) of liver lesions, lesion detectability and radiation dose were compared.

Results

There was no difference in mean CT numbers of all organs (all P > 0.05). SNR on VNCT images was higher than that of TNCT (all P < 0.001). Image quality of VNCT was diagnostic but lower than that of TNCT (P < 0.001). VNCT_A images were superior to VNCT_V (P < 0.001). VNCT_A and VNCT_V detected 78 (91%) and 70 (81%) of 86 hepatic focal lesions visualised on TNCT. There was no difference in the size, attenuation and CNR of focal hepatic lesions (all P > 0.05), but SNR of the lesions on VNCT was higher than that on TNCT (P < 0.001). Radiation dose of biphase DECT was lower than that of routine triphase CT (P < 0.001).

Conclusion

VNCT_A may potentially replace TNCT as part of a multi-phase liver imaging protocol with consequent saving in radiation dose.

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Title: Liver virtual non-enhanced CT with dual-source, dual-energy CT: a preliminary study
Authors: Long-Jiang Zhang
Jin Peng
Sheng-Yong Wu
Z. Jane Wang
Xin-Sheng Wu
Chang-Sheng Zhou
Xue-Man Ji
Guang-Ming Lu
Publication date: 01-09-2010
Publisher: Springer-Verlag
Published in: European Radiology / Issue 9/2010
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-010-1778-7

At a glance: The STEP trials

Springer Medicine

Liver virtual non-enhanced CT with dual-source, dual-energy CT: a preliminary study

Abstract

Purpose

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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