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Effectiveness of Contrast-enhanced MR Angiography for Visualization of the Prostatic Artery prior to Prostatic

Jin Long Zhang1, Mao Qiang Wang1, Yan Guang Shen1

  • 1From the Departments of Interventional Radiology (J.L.Z., M.Q.W., K.Y., H.N.X., J.X.F., J.Y.Y., Y.W.) and Radiology (Y.G.S., H.Y.Y., H.T.Z.), Chinese PLA General Hospital, 28 Fu-xing Rd, Beijing 100853, PR China.

Radiology
|February 27, 2019
PubMed

Insights

Contrast-enhanced MR angiography accurately identifies prostate arteries, improving prostatic artery embolization (PAE) for benign prostatic hyperplasia (BPH). This imaging technique reduces procedure times and radiation exposure compared to traditional methods.

Area of Science:

  • Interventional Radiology
  • Vascular Imaging
  • Urology

Background:

  • Prostatic arterial embolization (PAE) faces challenges in identifying and catheterizing prostatic arteries (PAs).
  • The clinical utility of MR angiography for visualizing PAs in PAE remains unclear.

Purpose of the Study:

  • To assess the efficacy of contrast-enhanced MR angiography in identifying PAs.
  • To evaluate the role of MR angiography in PAE for benign prostatic hyperplasia (BPH).

Main Methods:

  • A prospective study randomized 100 men undergoing PAE for BPH into two groups: with (Group B) and without (Group A) preprocedural MR angiography.
  • MR angiography findings were compared to digital subtraction angiography (DSA) as the reference standard.
  • Procedure times, fluoroscopy times, and radiation doses were compared between groups.

Main Results:

  • MR angiography demonstrated high sensitivity (91.5%) and a 100% positive predictive value for identifying PAs.
  • Group B (with MR angiography) showed significantly lower procedure times (82.3 vs 123.9 minutes) and fluoroscopy times (13.8 vs 28.5 minutes) compared to Group A.
  • Radiation dose was substantially reduced in Group B (median 339 mGy) versus Group A (median 920 mGy).

Conclusions:

  • Contrast-enhanced MR angiography accurately visualizes prostate artery anatomy.
  • Preprocedural MR angiography in PAE for BPH leads to shorter procedure durations and reduced radiation exposure.

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