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Three-Month Magnetic Resonance Imaging Post-Prostate Artery Embolization Predicts 1-Year Clinical Outcomes.

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Post-prostate artery embolization (PAE) MRI showing significant infarction can predict successful outcomes for benign prostatic enlargement. A 3-month post-PAE MRI infarct volume greater than 5% indicates better clinical success at 1 year.

Keywords:
Clinical successInfarctionPredictors

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Area of Science:

  • Interventional Radiology
  • Urology
  • Medical Imaging

Background:

  • Benign prostatic enlargement (BPE) is a common condition affecting aging men.
  • Prostate artery embolization (PAE) is an effective minimally invasive treatment for BPE.
  • Predicting clinical outcomes after PAE is crucial for patient management.

Purpose of the Study:

  • To evaluate the predictive value of post-PAE magnetic resonance imaging (MRI) for clinical outcomes at 1-year follow-up.
  • To determine if prostate volume (PV) reduction and infarction volume on 3-month post-PAE MRI correlate with clinical success.

Main Methods:

  • Retrospective analysis of 63 patients who underwent microsphere PAE for BPE.
  • Clinical outcomes assessed using International Prostate Symptom Score (IPSS), quality of life (QoL) scores, and urodynamics.
  • MRI-based measurements included prostate volume and infarction volume at baseline and 3 months post-PAE.

Main Results:

  • A 3-month post-PAE MRI showing infarction was significantly associated with clinical success at 12 months (OR=1.15, p=0.025).
  • An infarct volume ≥5% on 3-month MRI predicted clinical success with 72% sensitivity and 80% specificity (AUC=0.77).
  • Lower baseline IPSS correlated with better clinical outcomes (OR=0.78, p=0.003), while PV reduction did not significantly predict success.

Conclusions:

  • Post-PAE MRI, specifically the presence and extent of infarction at 3 months, is a valuable predictor of 1-year clinical outcomes.
  • An infarct volume exceeding 5% on 3-month MRI is a key indicator of successful PAE treatment for BPE.
  • Lower baseline symptom severity (IPSS) also contributes to predicting favorable outcomes after PAE.