Evaluation of postcontrast images of intracranial tumors at 7T and 3T MRI: An intra‐individual comparison study

• DOI: 10.1111/cns.14036
• Publication Date: 2022-12-05T10:14:34Z
• 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
• Keywords: 03 medical and health sciences; 0302 clinical medicine; Brain Neoplasms; Humans; Original Articles; Magnetic Resonance Imaging

AbstractAimThis study aimed to evaluate the diagnostic value of ultrahigh‐field magnetic resonance imaging (MRI) for brain tumors in clinical practice.MethodsThirty 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.ResultsIn 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.ConclusionBetter visualization of brain tumor details and higher tumor detail diagnostic confidence can be obtained with 7‐T MRI.