Image quality comparison of 1.5T and 3T prostate MRIs of the same post-hip arthroplasty patients: multi-rater assessments including PI-QUAL version 2

被引:1
作者
Nakai, Hirotsugu [1 ]
Takahashi, Naoki [1 ]
Sugi, Mark D. [2 ]
Wellnitz, Clinton V. [2 ]
Thompson, Cole P. [2 ]
Kawashima, Akira [2 ]
机构
[1] Mayo Clin, Dept Radiol, Rochester, MN USA
[2] Mayo Clin Arizona, Dept Radiol, 13400 E Shea Blvd, Scottsdale, AZ 85259 USA
关键词
Magnetic resonance imaging; Prostate cancer; Artifacts; Hip prosthesis; ARTIFACTS;
D O I
10.1007/s00261-024-04483-6
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
ObjectivesTo compare the image quality of 1.5T and 3T prostate MRIs of the same post-hip arthroplasty patients, with a specific focus on the degree of susceptibility artifacts.MethodsThis single-center retrospective study included post-hip arthroplasty patients who underwent 1.5T prostate MRIs between 2021 and 2023, as well as comparative 3T prostate MRIs. Three blinded abdominal radiologists retrospectively reviewed their diffusion-weighted imaging (DWI, 50 s/mm2), T2-weighted imaging (T2WI), and dynamic contrast-enhanced imaging (DCE) to evaluate the image quality. The degree of susceptibility artifacts was categorized using a three-point scale, with 3 indicating the least artifact and 1 indicating the most. Image quality was also evaluated using Prostate Imaging Quality (PI-QUAL) version 2. The median of the three raters' scores was compared between 1.5T and 3T prostate MRIs using the Wilcoxon signed-rank test. The inter-rater agreement was evaluated using the multi-rater generalized kappa.ResultsTwenty pairs of 1.5T and 3T prostate MRI examinations from 20 unique patients were included. The DWI susceptibility artifact score at 1.5T was significantly higher than at 3T (mean score +/- standard deviation, 2.80 +/- 0.41 vs. 2.35 +/- 0.93, p = 0.014). In contrast, no significant differences were observed in the susceptibility artifact scores in T2WI and DCE, or in the PI-QUAL score. The inter-reader agreement in the susceptibility artifact score was moderate (multi-rater generalized kappa: 0.60) in DWI, perfect in T2WI (not applicable), and substantial (0.65) in DCE. The inter-reader agreement was fair (0.27) in the PI-QUAL score.ConclusionUsing 1.5T scanners may be preferable to reduce susceptibility artifacts from hip prostheses in DWI.
引用
收藏
页码:3913 / 3924
页数:12
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