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Annals of Nuclear Medicine
Published in: Annals of Nuclear Medicine 3/2013

01-04-2013 | Original Article

A comparative study of FDG PET/CT and enhanced multi-detector CT for detecting liver metastasis according to the size and location

Authors: Jung Mi Park, Il Young Kim, Sang Won Kim, Sang Mi Lee, Hyun Gi Kim, Shin Young Kim, Hyung Chul Shin

Published in: Annals of Nuclear Medicine | Issue 3/2013

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Abstract

Purpose

The aim of this study was to compare the diagnosability between 18F-fluorodeoxyglucose (FDG) PET/CT and enhanced multi-detector CT (MDCT) for the detection of liver metastasis (LM) according to the size and location in liver and to evaluate standard maximum standardized uptake values (SUVmax) of all liver metastatic lesions.

Materials and methods

One hundred two consecutive patients with malignancy who underwent both FDG PET/CT and MDCT for LM evaluation were retrospectively reviewed. Among them, 56 patients with LM were enrolled in this study. LM was confirmed by follow-up imaging studies after at least 6 months or by histopathology. FDG PET/CT and MDCT images were visually analyzed using three-point scale by the consensus of two radiologists and two nuclear medicine physicians. The size and location (central vs. sub-capsular) of the all liver lesions were evaluated using MDCT images. Furthermore, SUVmax of all liver lesions on FDG PET/CT images were calculated.

Results

A total of 146 liver lesions were detected by FDG PET/CT and MDCT and 142 of the lesions were diagnosed as LM. The detection rates of MDCT and FDG PET/CT for LM by visual analysis were 77 and 78 %, respectively. There was no significant difference of detection rate according to the overall location and size of the lesions. However, FDG PET/CT was more sensitive than MDCT for detecting small and sub-capsular LM. The detection rate of FDG PET/CT for LM was 68 % by the cutoff SUVmax of 2.7.

Conclusions

Although the diagnosabilities of MDCT and FDG PET/CT for detecting LM were comparable, FDG PET/CT is superior to MDCT for detecting small LM located in the sub-capsular portion of liver.
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Metadata
Title
A comparative study of FDG PET/CT and enhanced multi-detector CT for detecting liver metastasis according to the size and location
Authors
Jung Mi Park
Il Young Kim
Sang Won Kim
Sang Mi Lee
Hyun Gi Kim
Shin Young Kim
Hyung Chul Shin
Publication date
01-04-2013
Publisher
Springer Japan
Published in
Annals of Nuclear Medicine / Issue 3/2013
Print ISSN: 0914-7187
Electronic ISSN: 1864-6433
DOI
https://doi.org/10.1007/s12149-012-0677-1

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