Evaluation of Postcontrast Images of Intracranial Tumors at 7T and 3T MRI: An Intra-individual Comparison Study

Overview

Journal CNS Neurosci Ther

Specialties Neurology
Pharmacology

Date 2022 Dec 5

PMID 36468424

Authors

Kun Cheng

Qi Duan

Jianxing Hu

Chenxi Li

Xiaoxiao Ma

Xiangbing Bian

Caohui Duan

Yongqin Xiong

Jiaji Lin

Haoxuan Lu

Linlin Deng

Ze Li

Mengting Wei

Jinhao Lyu

Ling Chen

Xin Lou

Affiliations

Soon will be listed here.

Abstract

Aim: This study aimed to evaluate the diagnostic value of ultrahigh-field magnetic resonance imaging (MRI) for brain tumors in clinical practice.

Methods: Thirty patients with brain tumors underwent 7- and 3-T MRI. The performance and diagnostic confidence of 7- and 3-T MRI in the visualization of tumor details such as internal structure and feeding artery were evaluated by radiologists. Contrast-enhanced region performance and tumor detail diagnostic confidence score (DCS) were calculated and compared between 7 and 3T using Wilcoxon rank sum test.

Results: In 19 with obvious enhancement and 11 cases without obvious enhancement, 7- and 3-T MRI showed similar performance. The tumors' internal structure and feeding artery were more clearly depicted by 7-T MRI (62.2% and 54.4%, respectively) than by 3-T MRI (2.2% and 6.7%, respectively). Furthermore, the mean DCSs of both internal structure and feeding artery were higher at 7T than at 3T (internal structure: 16.29 ± 9.67 vs. -5.79 ± 4.12, p = 0.028; feeding artery: 21.96 ± 6.93 vs. 4.46 ± 7.07, p = 0.028). The DCS was more significantly improved in the senior radiologist group.

Conclusion: Better visualization of brain tumor details and higher tumor detail diagnostic confidence can be obtained with 7-T MRI.

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