Dynamic contrast-enhanced (DCE) MR imaging: the role of qualitative and quantitative parameters for evaluating prostate tumors stratified by Gleason score and PI-RADS v2

被引：23

作者：

Afshari Mirak, Sohrab ^{[1
]}

Mohammadian Bajgiran, Amirhossein ^{[1
]}

Sung, Kyunghyun ^{[1
]}

Asvadi, Nazanin H. ^{[1
]}

Markovic, Daniela ^{[1
]}

Felker, Ely R. ^{[1
]}

Lu, David ^{[1
]}

Sisk, Anthony ^{[2
]}

Reiter, Robert E. ^{[3
]}

Raman, Steven S. ^{[1
,3
]}

机构：

[1] Univ Calif Los Angeles, David Geffen Sch Med, Dept Radiol Sci, 757 Westwood Plaza, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, David Geffen Sch Med, Dept Pathol, 10833 Le Conte Ave, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, David Geffen Sch Med, Dept Urol, Clark Urol Ctr Westwood, 200 UCLA Med Plaza,Suite 140, Los Angeles, CA 90095 USA

来源：

ABDOMINAL RADIOLOGY | 2020年 / 45卷 / 07期

关键词：

Prostate cancer; Magnetic resonance imaging; Perfusion imaging; Prostate Imaging and Reporting Data System; CANCER DETECTION; AGGRESSIVENESS; LOCALIZATION; DIAGNOSIS; IMAGES; BIOPSY;

D O I：

10.1007/s00261-019-02234-6

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：

Purpose To investigate the role of qualitative and quantitative DCE-MRI parameters in prostate cancer (PCa) stratified by whole-mount histopathology (WMHP) Gleason score (GS) and PI-RADSv2. Methods This retrospective study included 323 PCa tumors in 254 men, who underwent 3T MRI prior to prostatectomy, 7/2009-12/2016. Qualitative DCE curve types included type 1 (progressive), type 2 (plateau) and type 3 (washout). Quantitative DCE-MRI pharmacokinetic (PK) parameters included K-trans (influx volume transfer coefficient), K-ep (efflux reflux rate constant) and iAUC (initial area under the curve). DCE-MRI features of true positive lesions were evaluated for overall, index, transition zone (TZ) and peripheral zone (PZ), based on GS grade (low = 6, high > 6) and PI-RADSv2 score using SPSSv24. Results There were 57 (17.6%) low-grade and 266 (82.4%) high-grade PCa lesions. PI-RADSv2 3, 4 and 5 included 106, 120 and 97 lesions, respectively. 251 (77.7%) and 72 (22.3%) lesions were located in PZ and TZ, respectively. High-grade lesions had significantly higher proportion of Type 3 curves compared to low-grade lesions in overall (70.3% vs. 54.4%) and TZ (73.5% vs. 43.5%). As PI-RADSv2 increased, the proportion of type 3 curve significantly increased for overall (80.4-51.9%), index (80.4-54.7%) and PZ (78.7-52.1%) lesions. Among PK parameters, K-trans (0.43 vs 0.32) and iAUC (8.99 vs 6.9) for overall PCa, K-trans (0.43 vs 0.31) and iAUC (9 vs 6.67) for PZ PCa, and iAUC (8.94 vs 7.42) for index PCa were significantly higher for high-grade versus low-grade lesions. Also, K-trans (0.51-0.34), K-ep (1.75-1.29) and iAUC (9.79-7.6) for overall PCa, K-trans (0.53-0.32), K-ep (1.81-1.26) and iAUC (9.83-7.34) for PZ PCa; and K-ep (1.79-1.17) and iAUC (11.3-8.45) for index PCa increased significantly with a higher PI-RADSv2 score. Conclusions The results of study show the possible utility of qualitative and quantitative DCE-MRI parameters for assessment of PCa GS and PI-RADSv2 categorization.

引用

页码：2225 / 2234

页数：10

共 23 条

[1] Dynamic contrast enhanced MRI in prostate cancer [J].