title: [MRT of bladder carcinoma: tumor staging and gadolinium contrast behavior].
abstract: 33 patients with tumours of the urinary bladder were studied via MR, both with and without the paramagnetic contrast medium Gd-DTPA. Results were compared with the final pathological classification after TUER and bimanual palpation. The signal intensity ratio of tumour tissue/fat and tumour/muscle were calculated on T1 weighted images and after GD-DTPA and examined for their statistical significance. The increase in signal intensity of the tumours was statistically significant (Wilcoxon test p less than 0.01). There was no advantage for the T2 weighted images compared with Gd-contrasted enhanced T1 weighted images. MRI staging was correct in 28 out of 33 cases (accuracy 84.8%). Because of the relatively short acquisition time of T1 weighted images and the specific tumour enhancement, administration of Gd-DTPA proved to be of help in the staging of the carcinoma of the bladder. Two small tumours and regressive changes in central areas of tumours were recognised after Gd-DTPA.
authors.affiliation: Röntgendiagnostisches Zentralinstitut der Landeskrankenanstalten, Salzburg.
authors.forename: E
authors.initials: E
authors.lastname: Doringer
authors.forename: H
authors.initials: H
authors.lastname: Joos
authors.forename: R
authors.initials: R
authors.lastname: Forstner
authors.forename: H
authors.initials: H
authors.lastname: Schmoller
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003287:Contrast Media; D005069:Evaluation Studies as Topic; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D009942:Organometallic Compounds; D004369:Pentetic Acid; D011446:Prospective Studies; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA
vernacular_title: MRT des Harnblasenkarzinoms: Tumorstaging und Gadoliniumkontrastverhalten.