title: Preliminary results of power Doppler imaging in benign prostatic hyperplasia.
abstract: Power Doppler imaging was performed in 77 patients with lower urinary tract symptoms to characterize Doppler blood-flow signals in benign prostatic hyperplasia (BPH). Pulsatile blood flows were detected in all patients, demonstrating a significant increase of the resistive index (RI) in BPH cases (n = 40, 0.72 +/- 0.05, p < 0.0001), compared to those with a healthy prostate (n = 37, 0.64 +/- 0.04). Of 40 patients with BPH, 28 (70%) had an RI of 0.70 or higher; all but 1 patient with a healthy prostate (1 of 37, 3%) had an RI lower than 0.70 (p < 0.0001). In all 10 patients with BPH, the elevated RI decreased significantly to a normal control level after surgical treatment (0.72 +/- 0.02 vs. 0.64 +/- 0.05, p < 0.001). In conclusion, Doppler RI might be useful as a new urodynamic parameter in BPH.
authors.affiliation: Department of Urology, Kyoto Prefectural University of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kojima
authors.forename: H
authors.initials: H
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
authors.forename: K
authors.initials: K
authors.lastname: Okihara
authors.forename: Y
authors.initials: Y
authors.lastname: Naya
authors.forename: O
authors.initials: O
authors.lastname: Ukimura
mesh_terms: D000368:Aged; D001783:Blood Flow Velocity; D019160:Endosonography; D006801:Humans; D008297:Male; D011467:Prostate / Q000000981:diagnostic imaging*; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D011673:Pulsatile Flow; D012007:Rectum / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D018608:Ultrasonography, Doppler; D014555:Urination Disorders / Q000000981:diagnostic imaging / Q000503:physiopathology; D014563:Urodynamics