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European Radiology
Published in: European Radiology 9/2007

01-09-2007 | Neuro

Detection of brain metastasis at 3T: comparison among SE, IR-FSE and 3D-GRE sequences

Authors: Shingo Kakeda, Yukunori Korogi, Yasuhiro Hiai, Norihiro Ohnari, Junji Moriya, Koji Kamada, Mai Hanamiya, Toru Sato, Mika Kitajima

Published in: European Radiology | Issue 9/2007

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Abstract

The objective of this study is to compare the detectability of brain metastases at 3T among three contrast-enhanced sequences, spin-echo (SE) sequence, inversion recovery fast SE (IR-FSE) sequence (both with section thickness of 6 mm), and three-dimensional fast spoiled gradient-echo (3D fast SPGR) sequence with 1.4 mm isotropic voxel. First, phantom studies were performed to quantify the contrast-enhancement ratio (CER) with three sequences. In 21 consecutive patients with brain metastases, axial images of three sequences at 3T were obtained after administration of gadoteridol. Two neuroradiologists assessed the detectability of brain metastases for the three sequences. In the phantom study, no evident difference in the CER was demonstrated among three sequences. Significantly more brain metastases were detected with 3D fast SPGR than with SE and IR-FSE (a total of 97 lesions with 3D fast SPGR vs. 64 with SE and 63 with IR-FSE). In particular, 3D fast SPGR was superior to the other two sequences in detection of the small lesions (<3 mm). At 3T, the contrast-enhanced 3D fast SPGR with 1.4 mm isotropic voxel is clinically more valuable for detecting small brain metastases than the SE and IR-FSE with section thickness of 6 mm.
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Metadata
Title
Detection of brain metastasis at 3T: comparison among SE, IR-FSE and 3D-GRE sequences
Authors
Shingo Kakeda
Yukunori Korogi
Yasuhiro Hiai
Norihiro Ohnari
Junji Moriya
Koji Kamada
Mai Hanamiya
Toru Sato
Mika Kitajima
Publication date
01-09-2007
Publisher
Springer-Verlag
Published in
European Radiology / Issue 9/2007
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-007-0599-9

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