1. a. Department of Radiology| b. Department of Nuclear Medicine, Xuanwu Hospital Capital Medical University, Beijing 100053,
China| 2. Beijing Key Laboratory of Magnetic Resonance Imaging and Brain Informatics, Beijing 100053, China
Abstract:Objective To explore the application value of high-resolution diffusion-weighted imaging (DWI) of readout
segmentation of long variable echo trains(RESOLVE)in high-field intraoperation magnetic resonance imaging of brain
tumor. Methods T1WI, conventional DWI and RESOLVE-DWI sequences of 21 patients with glioma or meningioma were scanned
by high-field intraoperation MRI system during surgery. Two radiologists evaluated and scored the quality of the images, including
the anatomic distortion, spatial resolution, and surgical area conspicuity. The signal noise ratio (SNR) of the operation area and
difference of apparent diffusion coefficient (ADC) of were evaluated quantitatively. The paired t-test was used to compare the image
quality score, SNR and ADC value of the two DWI sequences. Results The image quality score and SNR of RESOLVE-DWI
were higher than those of conventional EPI-DWI, the difference was statistically significant (P<0.001), but there was no significant
difference in ADC value of DWI between the two groups (P>0.05). Conclusion RESOLVE-DWI technology can effectively
improve the image quality of DWI in brain tumor surgery, and reduce artifacts and distortion of DWI image.