Clinical comparison of single-shot EPI, readout-segmented EPI and TGSE-BLADE for diffusion-weighted imaging of cerebellopontine angle tumors on 3 tesla

The complex anatomical structures of cerebellopontine angle (CPA) pose a unique challenge to diffusion weighted imaging (DWI). This study aimed to compare the clinical utility of the prototypic 2D turbo gradient- and spin echo-BLADE-DWI (TGSE-BLADE-DWI) with that of readout-segmented echo-planar DWI...

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Bibliographic Details
Published in:Magnetic resonance imaging 2021-12, Vol.84, p.76-83
Main Authors: Fu, Qing, Kong, Xiang-chuang, Liu, Ding-xi, Zhou, Kun, Guo, Yi-hao, Wang, Ming-fu, Lei, Zi-Qiao, Zheng, Chuan-Sheng
Format: Article
Language:English
Subjects:
Cerebellopontine angle
Diffusion Magnetic Resonance Imaging - methods
Diffusion weighted imaging
Echo-Planar Imaging - methods
Humans
Neuroma, Acoustic - diagnostic imaging
Readout-segmented echo-planar diffusion weighted imaging
Reproducibility of Results
Single-shot echo-planar diffusion weighted imaging
turbo gradient- and spin echo-BLADE diffusion weighted imaging
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Summary:The complex anatomical structures of cerebellopontine angle (CPA) pose a unique challenge to diffusion weighted imaging (DWI). This study aimed to compare the clinical utility of the prototypic 2D turbo gradient- and spin echo-BLADE-DWI (TGSE-BLADE-DWI) with that of readout-segmented echo-planar DWI (RESOLVE-DWI) and single-shot echo-planar DWI (SS-EPI-DWI) to visualize CPA anatomic structures and identify CPA tumors. A total of 8 volunteers and 36 patients with pathological CPA tumors were enrolled to perform the three DWI sequences at 3 T. Scan time of TGSE-BLADE-DWI, RESOLVE-DWI and SS-EPI-DWI was 5 min 51 s, 5 min 15 s and 1 min 22 s, respectively. Subjective analysis, including visualization of anatomical structures, geometric distortion, ghosting artifacts, lesion conspicuity, diagnostic confidence, and overall image quality of the three DWI sequences were scored and assessed. Signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and apparent diffusion coefficient (ADC) of CPA tumors were measured and compared. A total of 39 lesions were identified, TGSE-BLADE-DWI detected all of them, RESOLVE-DWI 36 and SS-EPI-DWI 27. Significant differences were found in all the subjective parameters among the three DWI sequences (all p 
ISSN:0730-725X
1873-5894
DOI:10.1016/j.mri.2021.09.009