title: [Stereometry of the prostate using MRI-A comparison between TRUS, CT, and MRI-].
abstract: I-125 permanently implanted sealed-source radiotherapy is one of the treatments for early localized prostate carcinoma. In order to choose treatment parameters such as the number of implanted sources, accurately determining the volume of the prostate is vital for this type of therapy. We compared the usefulness of transrectal ultrasound (TRUS), computed tomography (CT), and magnetic resonance imaging (MRI) for preoperative stereometry of the prostate, and we further reviewed the utility of the MRI measurement. We performed prostate stereometry with TRUS, CT, and MRI in each of 45 patients who had provided informed consent. Taking TRUS stereometry as the standard, we computed the correlation of the MRI results with TRUS, and that of the CT results with TRUS, and found that MRI had a higher correlation.
authors.affiliation: Departmet of Radiology, Showa University Hospital.
authors.forename: Chikara
authors.initials: C
authors.lastname: Noda
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takahashi
authors.forename: Keigo
authors.initials: K
authors.lastname: Okabe
authors.forename: Hajime
authors.initials: H
authors.lastname: Saito
authors.forename: Kyoichi
authors.initials: K
authors.lastname: Kato
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Nakazawa
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009929:Organ Size; D011467:Prostate / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography