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Titolo:
Multi-slice CT Urography after diuretic injection: initial results
Autore:
Nolte-Ernsting, CCA; Wildberger, JE; Borchers, H; Schmitz-Rode, T; Gunther, RW;
Indirizzi:
Univ Technol Aachen, Dept Diagnost Radiol, Aachen, Germany Univ Technol Aachen Aachen Germany ept Diagnost Radiol, Aachen, Germany Univ Technol Aachen, Dept Urol, Aachen, Germany Univ Technol Aachen Aachen Germany l Aachen, Dept Urol, Aachen, Germany
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 3, volume: 173, anno: 2001,
pagine: 176 - 180
SICI:
1438-9029(200103)173:3<176:MCUADI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
URINARY-TRACT;
Keywords:
urography; computed tomography; multi-slice technology; furosemide;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
5
Recensione:
Indirizzi per estratti:
Indirizzo: Nolte-Ernsting, CCA Univ Technol Aachen Hosp, Dept Diagnost Radiol, Pauwelsstr 30, D-52057 Aachen, Germany Univ Technol Aachen Hosp Pauwelsstr 30 Aachen Germany D-52057
Citazione:
C.C.A. Nolte-Ernsting et al., "Multi-slice CT Urography after diuretic injection: initial results", ROFO-F RONT, 173(3), 2001, pp. 176-180

Abstract

Purpose: To investigate the feasibility of CT urography (CTU) using a multi-slice (MS) scanner and to find out whether a low-dose diuretic injection is advantageous for the opacification of the urinary tract. Methods: MS-CTUwas performed in 21 patients with urologic diseases. In 5/21 patients, 250ml of physiologic saline Solution were injected. In 16/21 patients, 10 mg of furosemide were injected 3-5 min before contrast material administration. A 4 x 2.5 mm collimation with a pitch of 1.25 and a tube curent of 100 - 150 mA were used. Scan time was 12 - 16 sec. 3 mm thin axial images with anoverlap of 67 % were reconstructed. Multiplanar maximum intensity projection (MIP) images were postprocessed to obtain urographic views. Bone structures were eliminated using the volume-of-interest method. Results: Furosemide-enhanced MS-CTU achieved either near complete or complete opacification in 30/32 (94 %) ureters and in 32/32 (100 %) pelvicaliceal systems up to a serum creatinine of 150 mu mol/l. In our series, only one CTU scan per patient was needed to obtain a diagnostic urogram after 10 min of contrast material injection. Ureteral compression was not necessary. When physiologic saline solution was used instead of furosemide, the radiopacity inside the enhanced pelvicalices was 4 - 5 times higher and more inhomogeneous. Diuretic-enhanced MS-CTU was more accurate in the depiction of pelvicaliceal details. In combination with furosemide, calculi were well identified inside the opacified urine and were safely differentiated from phleboliths. Postprocessing times of up to 20 minutes were problematic as were contrast-enhanced superimposing bowel loops on MIP images. Conclusion: Preliminary results demonstrate a good feasibility of furosemide-enhanced MS-CTU for obtaining detailed visualization of the entire upper urinary tract.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 07:32:41