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IJ Radiology

An Innovative Journal in the Field of Radiology

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https://doi.org/10.5812/iranjradiol.99135

Diagnostic Accuracy of Multi-Parametric Magnetic Resonance Imaging for Differentiation of Benign and Malignant Lesions of Prostate Using Radiomics Analysis

Author(s):
Soheila KoopaeeSoheila KoopaeeSoheila Koopaee ORCID1, Anahita Fathi KazerooniAnahita Fathi Kazerooni1, Mahyar GhafooriMahyar Ghafoori2, Mohamad Reza AlviriMohamad Reza Alviri1, Kamal HoseiniKamal Hoseini1, Fakhereh PashaeiFakhereh Pashaei1, Hamidreza Saligheh RadHamidreza Saligheh Rad3,*
1Quantitative MR Imaging and Spectroscopy Group (QMISG), Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran
2Department of Radiology, Iran University of Medical Sciences, Tehran, Iran
3Quantitative MR Imaging and Spectroscopy Group (QMISG), Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

IJ Radiology:Vol. 16, issue Special Issue; e99135
Published online:Dec 10, 2019
Article type:Abstract
Received:Oct 26, 2019
Accepted:Dec 10, 2019
How to Cite:Soheila KoopaeeAnahita Fathi KazerooniMahyar GhafooriMohamad Reza AlviriKamal HoseiniFakhereh PashaeiHamidreza Saligheh Radet al.Diagnostic Accuracy of Multi-Parametric Magnetic Resonance Imaging for Differentiation of Benign and Malignant Lesions of Prostate Using Radiomics Analysis.I J Radiol.16(Special Issue):e99135.https://doi.org/10.5812/iranjradiol.99135.

Abstract

Background:

Prostate cancer is the second most common cancer-related cause of death in men. Accurate diagnosis of prostate cancer plays an important role in decreasing mortality rates. European Association of Urology (EAU) suggests multiparametric MRI (mp-MRI) of the prostate as a noninvasive method to evaluate prostate lesions. To leverage the interbreeder variability in the interpretation of mp-MRI, computer-aided diagnostic (CAD) systems can be used for automatic detection and characterization of prostate lesions.

Objectives:

The goal of this article was to design a quantification method based on mp-MRI for the discrimination of benign and malignant prostatic lesions with MR imaging/transrectal ultrasonography fusion-guided biopsy as a reference for pathology validation.

Methods:

Mp-MR images, including T1- and T2-weighted, diffusion-weighted imaging (DWI), and dynamic contrast enhancement imaging (DCE) MRI were acquired at 1.5T from 27 patients. Then, 106 radiomic features (first-order histogram (FOH), gray-level co-occurrence matrix (GLCM), run-length matrix (RLM), and Gabor filters) were calculated from mp-MRI. Statistical analysis was performed using receiver-operating-characteristic curve analysis for feature filtering, linear discriminant analysis (LDA) for feature extraction, and leave-one-out cross-validation for evaluation of the method in the differentiation of benign and malignant lesions.

Results:

An accuracy of 96.6% was achieved for discriminating benign and malignant prostate lesions from a subset of texture features derived from ADC and DCE maps (radiomics-based method) with sensitivity and specificity of 100% and 85.7%, respectively.

Conclusion:

A radiomic quantification method based on T2-weighted images, ADC maps, and quantitative and semiquantitative DCE maps can discriminate benign from malignant prostate lesions with promising accuracy. This method is helpful to avoid unnecessary biopsies in patients and may provide information for CAD systems for the classifications of prostate lesions as an auto-detection technique.

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