- 作者：E. Serrano ; enrique.serrano@hospitalitaliano.org.ar" class="auth_mail" title="E-mail the corresponding author ; J. Ocantos ; A. Kohan ; N. Kisilevsky ; N. Napoli ; R. Garcí ; a-Mó ; naco
- 关键词：Benign prostatic hyperplasia ; Magnetic resonance ; Embolization ; Diffusion sequence
- 刊名：Radiología (English Edition)
- 出版年：2016
- 出版时间：March-April 2016
- 年：2016
- 卷：58
- 期：2
- 页码：129-135
- 全文大小：1199 K
Material and methods
We analyzed MR studies done before (7–10 days) and after (30 days) PAE in 19 patients with BPH treated with PAE between June 2012 and December 2013. We used 1.5 Tesla scanners with body surface coils. In pre-PAE MR studies, we recorded mean b40 values and minimum (min) and maximum (max) apparent diffusion coefficient (ADC) values. In post-PAE MR studies, we recorded b40, b400, and b1000 values and min, mean, and max ADC values. We compared diffusion behavior/ADC before and after PAE and areas without ischemia. We correlated these with decreased prostatic volume (PV).
Results
We identified ischemia with contrast in 8 (42.1%) patients. No significant difference was found in mean b40 (p = 0.1650) or in the b40 ratio (p = 0.8868) between patients with ischemia and those without before PAE. Min b40, b40 ratio, and min ADC values differed significantly between ischemic areas and nonischemic areas within patients [p = 0.048 (b40 min and ratio) and p = 0.002 (min ADC)]. No significant correlation was found between the percentage decrease in PV and mean b40 (p = 0.8490) or b40 ratio (p = 0.8573).
Conclusion
Post-PAE ischemia generates objective changes in diffusion and ADC values that enable ischemic sectors to be differentiated from nonischemic sectors. Future studies should analyze whether it is possible to subjectively differentiate between these areas through the visualization of nonischemic sectors and the feasibility of replacing them with contrast to detect ischemia.