Benign prostatic hyperplasia after prostatic arterial embolization in a canine model: A 3T multiparametric MRI and whole‐mount step‐section pathology correlated longitudinal study
Abstract
Purpose To explore the morphological and functional characteristics of prostatic arterial embolization (PAE) in a canine model of benign prostatic hyperplasia (BPH) with 3T multiparametric magnetic resonance imaging (mp‐MRI) and whole‐mount step‐section pathology correlation. Materials and Methods Eight adult male beagle dogs with hormone‐induced BPH underwent 3T mp‐MRI before and 1, 3, and 6 months after PAE, with subsequent whole‐mount step‐section pathologic assessment. Images were acquired using T1‐weighted images (T1WI), T2WI, 3D‐SPACE, diffusion‐weighted imaging (DWI), susceptibility‐weighted imaging (SWI), T2‐mapping, and dynamic contrast‐enhanced (DCE) sequences. Variance analysis was performed to assess statistical differences in prostatic volume (PV), apparent diffusion coefficient (ADC), and T2 values. Pearson correlation analysis was performed to correlate ADC, T2, and PV. Results The PV decreased from baseline to 1, 3, and 6 months after PAE from (25.88 ± 7.09) cm3 to (6.48 ± 2.08) cm3, (6.48 ± 3.39) cm3, (6.20 ± 2.88) cm3. The ADC values sequentially decreased from baseline to 1, 3, and 6 months after PAE from (1497.06 ± 222.72) × 10−6 mm2/s to (1056.00 ± 189.46) × 10−6 mm2/s, (950.48 ± 77.85) × 10−6 mm2/s, (980.98 ± 107.78) × 10−6 mm2/s. The T2 values decreased from baseline to 1, 3, and 6 months after PAE were (83.74 ± 5.29) msec, (68.72 ± 5.66) msec, (53.96 ± 15.04) msec, (49.81 ± 13.34) msec, respectively. ADC and T2 values were positively correlated with…
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