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  • Deep Learning Model...

Deep Learning Model Matches Radiologists in Detecting Significant Prostate Cancer on MRI: Study

Deepanshi BhatnagarWritten by Deepanshi Bhatnagar Published On 2024-08-08T07:00:17+05:30  |  Updated On 8 Aug 2024 10:07 AM IST
Deep Learning Model Matches Radiologists in Detecting Significant Prostate Cancer on MRI: Study
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USA: A retrospective study suggested that a deep learning model matched the performance of radiologists in detecting clinically significant prostate cancer using multiparametric MRI. The findings were published online in Radiology Journal.

In an internal test set of 400 exams, the researchers found that the deep learning model demonstrated performance comparable to experienced radiologists in detecting clinically significant prostate cancer, with both achieving an area under the receiver operating characteristic curve (AUC) of 0.89.

Prostate cancer is cancer that occurs in the prostate. The prostate is a small walnut-shaped gland in males that produces the seminal fluid that nourishes and transports sperm. Prostate cancer is one of the most common types of cancer. Multiparametric MRI of the prostate is a standard imaging method used to diagnose clinically significant prostate cancer (csPCa) and assist in targeting lesions during a biopsy. Considering this Jason C. Cai, et al conducted a study to create a deep learning model using patient-level labels to predict the presence of clinically significant prostate cancer (csPCa) without information on tumor location and to compare its performance with that of radiologists.

To achieve this, the research team included 5,735 patients in the study, of whom 5,215 were male. Out of these, 1,514 examinations (involving 1,454 patients) revealed clinically significant prostate cancer (csPCa) and were conducted between January 2017 and December 2019. For the internal test set, radiology reports were utilized, while PI-RADS ratings were used for the external ProstateX test set. The study compared performance using areas under the receiver operating characteristic curves (AUCs) and the DeLong test and employed gradient-weighted class activation maps (Grad-CAMs) to illustrate tumor localization.

They found the following results: -

· In the internal test set, which included 400 examinations, both the deep learning (DL) classifier and radiologists achieved an AUC of 0.89. In the external test set, consisting of 204 examinations, the DL classifier had an AUC of 0.86, while radiologists had an AUC of 0.84.

· The combination of the DL classifier and radiologists achieved an AUC of 0.89.

· Grad-CAMs showed activation over the csPCa lesions in 35 out of 38 true-positive cases in the internal test set and in 56 out of 58 true-positive cases in the external test set.

“The deep learning model is expected to enhance the detection of prostate cancer and improve the diagnostic accuracy of radiologists”, the researchers concluded.

Reference

Cai, J. C., Nakai, H., Kuanar, S., Froemming, A. T., Bolan, C. W., Kawashima, A., Takahashi, H., Mynderse, L. A., Dora, C. D., Humphreys, M. R., Korfiatis, P., Rouzrokh, P., Bratt, A. K., Conte, G. M., Erickson, B. J., & Takahashi, N. (2024). Fully Automated Deep Learning Model to Detect Clinically Significant Prostate Cancer at MRI. Radiology, 312(2), e232635. https://doi.org/10.1148/radiol.232635

automated deep learning modelprostate cancercancerMRIRadiological Society of North America JournalRadiologyAI
Source : Radiology
Deepanshi Bhatnagar
Deepanshi Bhatnagar

    Deepanshi Bhatnagar (MSc Nutrition and Dietetics) is a professional with a master's degree in Nutrition and Dietetics from MRIIRS. With a strong academic background, she is well-versed in the principles of nutrition and dietary science. At Medical Dialogues, Deepanshi serves as the correspondent for fact-checking, where she is responsible for verifying and evaluating claims related to nutrition and diet, ensuring that all content is accurate, evidence-based, and scientifically sound.

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