title: Ultrasonically guided transperineal seed implantation of the prostate: modification of the technique and qualitative assessment of implants.
abstract: During the period 1988-1991, 23 patients with prostatic carcinoma were treated by transperineal iodine seed implantation guided by transrectal ultrasound. We introduce a refinement of the implantation technique using a rigid column of seeds and spacers. The uniformity parameter based on the peak width of the natural volume-dose histogram demonstrated quantitatively that this refinement resulted in a more accurate seed arrangement.
authors.affiliation: Radiotherapeutic Institute Stedendriehoek en Omstreken, Deventer Hospitals, The Netherlands.
authors.forename: A
authors.initials: A
authors.lastname: van't Riet
authors.forename: H J
authors.initials: HJ
authors.lastname: te Loo
authors.forename: A F
authors.initials: AF
authors.lastname: Ypma
authors.forename: A C
authors.initials: AC
authors.lastname: Mak
authors.forename: F H
authors.initials: FH
authors.lastname: van Slooten
authors.forename: C J
authors.initials: CJ
authors.lastname: Hoekstra
authors.forename: M C
authors.initials: MC
authors.lastname: Stenfert Kroese
mesh_terms: D001918:Brachytherapy / Q000379:methods*; D006801:Humans; D007457:Iodine Radioisotopes / Q000008:administration & dosage / Q000627:therapeutic use*; D008297:Male; D010502:Perineum; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000532:radiotherapy*; D012189:Retrospective Studies; D014463:Ultrasonography
chemical_list: D007457:Iodine Radioisotopes