Study of Prostate Perfusion Before Embolization in Patients With Symptomatic Prostate Adenoma

Inclusion Criteria: * Patients with symptomatic benign prostatic hypertrophy (prostate volume \> 50, IPSS \>7, QoL\>2) or patients catheterized after acute retention of urine with failed catheterization. * Creatinine clearance \> 30 mL/min for one of the two Cockcroft-Gault/MDRD equations) * Adult patients (≥18 years). * Patients with an indication for prostate embolization. * Patient with free and informed consent. * Patient who have signed the consent form. * Patient affiliated or beneficiary of a health insurance plan. Exclusion Criteria: * Hypersensitivity to the active substance or to one of the excipients of the iodized contrast medium. * Severe renal impairment with renal function \<30mL/min. * Contraindication to prostate embolization (aorto-iliac bypass) * Patient participating in research defined as Category 1 Research Involving Human Subjects. * Patient in an exclusion period as determined by another study. * Patient under court protection, guardianship or curatorship. * Patient unable to give consent. * Patient for whom it is impossible to give informed information.