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Periferik Zon Lezyonlarında PI-RADS 3, 4 ve 5 Ayrımında Difüzyon Ağırlıklı Görüntüleme ve Multiparametrik Prostat MR

Cilt: 21 Sayı: 1 28 Mart 2026
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Diffusion-Weighted Imaging and Multiparametric Prostate MRI in the Differentiation of PI-RADS 3, 4, and 5 Peripheral Zone Lesions

Abstract

Objective: PI-RADS (Prostate Imaging Reporting and Data System, Version) categorization based on multiparametric magnetic resonance imaging is an accepted method that has been revised several times for the early detection of prostate cancer. PI-RADS 2.1 is a scoring system designed to standardize assessment between centers. Based on the experience gained after the announcement of PI-RADS 2.0, version 2.1 offers important updates and clarifications, although it is an active scoring that continues to be updated. However, even the latest revision has introduced subjective concepts such as mild or marked. Improving the categorization may involve reorganization with objective numerical data. Continued advances in the study of prostate cancer and innovations in imaging technology will undoubtedly shape the future version of the reporting system. Material and Methods: Digital ADC (Apparent diffusion coefficient) mapping measurements, the basis of PI-RADS categorization for the peripheral zone, were determined in 91 pathologically diagnosed peripheral zone lesions with PI-RADS categories 3, 4, and 5. The mean values of these lesions were measured on ADC imaging, including at least 5 mm in the most prominent slice in the axial plane. Results: Statistically significant numerical cut-off values were determined based on ADC mapping characteristics, and an objective value was obtained that can be used instead of the terms mild or prominent in peripheral zone lesions. Conclusion: The obtained cut-off can be used in the scoring of peripheral zone lesions by predicting the malignancy risk of the lesion. The data obtained can also be used to revise the PI-RADS categorization. Thus, the accuracy of both the radiologist and the clinician can be proven. In addition, unnecessary biopsies can be prevented.

Keywords

PI-RADS , multiparametric prostate MRI , diffusion weighted imaging , ADC mapping , prostate cancer.

Kaynakça

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Kaynak Göster

AMA
1.Berksoy AE, Doğan K, Doğaner A. Periferik Zon Lezyonlarında PI-RADS 3, 4 ve 5 Ayrımında Difüzyon Ağırlıklı Görüntüleme ve Multiparametrik Prostat MR. KSÜ Tıp Fak Der. 2026;21(1):15-22. doi:10.17517/ksutfd.1686570