title: [Dose uncertainties in irradiation of bladder cancer with the Nd: YAG laser beam].
abstract: By in vitro investigations with the laser set medilas 2 YAG (MBB) possible dosage insecurities were demonstrated in the radiation of urinary bladder cancers using Nd-YAG-laser light. While the endoscopic distance of e.g. 3 +/- 1 mm is accompanied by a relatively low dosage uncertainty of +/- 23%, the thermic formation of gas bubbles on the endoscopic end area, which is immersed in flush fluid, may be cause a dosage uncertainty of 80%. Help is possible by slipp off the endoscope area on the bladder wall. Uncertainties because of different tissue absorption of radiation are not taken into account.
authors.affiliation: Urologische Klinik, Universität Karlsruhe.
authors.forename: W
authors.initials: W
authors.lastname: Freude
authors.forename: R D
authors.initials: RD
authors.lastname: Huber
authors.forename: E
authors.initials: E
authors.lastname: Matouschek
mesh_terms: D003558:Cystoscopy; D006801:Humans; D053685:Laser Therapy; D012542:Scattering, Radiation; D007507:Therapeutic Irrigation; D001743:Urinary Bladder / Q000473:pathology; D001749:Urinary Bladder Neoplasms / Q000473:pathology / Q000601:surgery*
vernacular_title: Dosisunsicherheiten bei der Bestrahlung von Harnblasenkarzinomen mit Nd: YAG-Laserlicht.