title: Penile blood flow by xenon-133 washout.
abstract: Penile erectile failure is often attributed to abnormalities of vascular supply or drainage, but few direct measurements of penile blood flow have been made. We describe the xenon washout method for measurement of penile blood flow, and present the results obtained in a group of normal and impotent subjects. The procedure was performed with standard nuclear imaging equipment. Flaccid-state penile blood flow in the impotent patients studied was not significantly different from the normal group, suggesting that flaccid-state measurements may not be helpful in evaluation of erectile failure. However, this method can be used to measure penile venous outflow with stimulated or induced erection, and may provide a method for detecting abnormal venous leakage.
authors.affiliation: Nuclear Medicine Service, Veterans Administration Medical Center, Richmond, VA 23249.
authors.forename: H T
authors.initials: HT
authors.lastname: Haden
authors.forename: P G
authors.initials: PG
authors.lastname: Katz
authors.forename: T
authors.initials: T
authors.lastname: Mulligan
authors.forename: N D
authors.initials: ND
authors.lastname: Zasler
mesh_terms: D000328:Adult; D000368:Aged; D007172:Erectile Dysfunction / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000098:blood supply*; D011877:Radionuclide Imaging; D012016:Reference Values; D013119:Spinal Cord Injuries / Q000150:complications; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes