Browse Articles
Discover research articles across all indexed journals
Integrated microscopic, HPTLC, and HRM analyses for differentiating Centella asiatica (L.) Urb., Bacopa monnieri (L.) Wettst, and Hydrocotyle umbellata L.
Experimental and numerical investigation of endwall flow control through air injection in a contra rotating fan
Climate, diet, and nutrition drive gut microbiome variation in a fruit-specialist primate
Polyphasic and phylogenomic reevaluation of Zhongshania and Marortus with the description of Zhongshania aquatica sp. nov.
Randomized clinical trial on the effects of early cognitive interventions for children with acquired brain injury
Value of integrated PET-IVIM MRI in predicting Ki-67 expression in newly diagnosed prostate cancer
Abstract Accurate assessment of Ki-67 expression in patients with prostate cancer (PC) is paramount. Therefore, this study aimed to assess the value of integrated Gallium-68(68Ga)-prostate-Specific membrane antigen-11 (PSMA) Positron Emission Tomography/Intravoxel Incoherent Motion Magnetic Resonance Imaging (PET/IVIM MRI) in predicting Ki-67 expression in newly diagnosed PC. A retrospective analysis was conducted on 37 newly diagnosed PC patients who underwent 68Ga-PSMA-11 PET/MR for staging. Maximum Standardized Uptake Value( SUVmax) and IVIM parameters of lesions were quantified. Patients were stratified into low-risk (Ki-67 < 5%) and high-risk groups (Ki-67 > 5%). SUVmax and IVIM parameters were compared between the two groups. Of the 37 patients, 29 were categorized as high risk, while 8 were classified as low risk. The high-risk group exhibited significantly higher SUVmax (21.4 ± 11.3 vs. 11.2 ± 8.5, P = 0.025) and lower Standard apparent diffusion coefficient (ADC) (0.0011 ± 0.00023 vs. 0.0014 ± 0.00039, P = 0.005) compared to the low-risk group. Receiver operating characteristic (ROC) analysis determined optimal cut-off values for predicting high-risk patients as 7.64 for SUVmax (sensitivity: 96.6%, specificity: 59.1%) and 0.0013 for standard ADC (sensitivity: 89.7%, specificity: 52.3%). Integrated assessment of SUVmax and standard ADC using 68Ga-PSMA-11 PET-IVIM MRI may aid in predicting Ki-67 expression, with optimal thresholds of 7.67 for SUVmax and 0.0013 for standard ADC. These findings offer novel insights into evaluating the biological behavior of prostate cancer tumors in patients undergoing PET/MR imaging.