MR image quality in local staging of prostate cancer: Role of PI-QUAL in the detection of extraprostatic extension

医学 麦克内马尔试验 列线图 前列腺癌 再现性 前列腺切除术 图像质量 置信区间 放射科 核医学 前列腺 癌症 内科学 统计 人工智能 图像(数学) 计算机科学 数学
作者
Andrea Ponsiglione,Arnaldo Stanzione,Gianluigi Califano,Marco De Giorgi,Claudia Collà Ruvolo,Imma D’Iglio,Simone Morra,Nicola Longo,Massimo Imbriaco,Renato Cuocolo
出处
期刊:European Journal of Radiology [Elsevier BV]
卷期号:166: 110973-110973 被引量:13
标识
DOI:10.1016/j.ejrad.2023.110973
摘要

PurposeTo assess the impact of prostate MRI image quality by means of the Prostate Imaging Quality (PI-QUAL) score, on the identification of extraprostatic extension of disease (EPE), predicted using the EPE Grade Score, Likert Scale Score (LSS) and a clinical nomogram (MSKCCn).MethodsWe retrospectively included 105 patients with multiparametric prostate MRI prior to prostatectomy. Two radiologists evaluated image quality using PI-QUAL (≥ 4 was considered high quality) in consensus. All cases were also scored using the EPE Grade, the LSS, and the MSKCCn (dichotomized). Inter-rater reproducibility for each score was also assessed. Accuracy was calculated for the entire population and by image quality, considering two thresholds for EPE Grade (≥ 2 and = 3) and LSS (≥ 3 and ≥ 4) and using McNemar's test for comparison.ResultsOverall, 66 scans achieved high quality. The accuracy of EPE Grade ranged from 0.695 to 0.743, while LSS achieved values between 0.705 and 0.733. Overall sensitivity for the radiological scores (range = 0.235-0.529) was low irrespective of the PI-QUAL score, while specificity was higher (0.775-0.986). The MSKCCn achieved an AUC of 0.76, outperforming EPE Grade (= 3 threshold) in studies with suboptimal image quality (0.821 vs 0.564, p = 0.016). EPE Grade (= 3 threshold) accuracy was also better in high image quality studies (0.849 vs 0.564, p = 0.001). Reproducibility was good to excellent overall (95% Confidence Interval range = 0.782-0.924).ConclusionAssessing image quality by means of PI-QUAL is helpful in the evaluation of EPE, as a scan of low quality makes its performance drop compared to clinical staging tools.
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