[MR urography with the T2-weighted turbo-spin-echo sequence].
Tumor-induced dilatation of the urinary tract is difficult to diagnose in the distal part of the ureter, including the stenosis, by ultrasound and X-ray. Often on account of renal insufficiency and allergy, i.v.-contrast media cannot be used. The present study should show the suitability of fast T2-weighted (turbo-) spin-echo sequences (T2-TSE) for MR-urography (MRU). Seven patients (62.3 +/- 6.1 years) were examined in the coronal plane with T2-TSE sequence (TR = 4500 ms, TE = 160 ms) and an MRU was calculated by using the MIP method (maximal intensity projection). This technique enabled urogram-like morphological representation of dilated urinary tract including stenosis in 6 of 7 patients. Assuming a high magnetic field homogeneity, MRU by using a T2-TSE-sequence, without i.v.-contrast media administration, can visualize the urinary tract dilatation and localize tumor-induced stenosis.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D016889:Endometrial Neoplasms / Q000175:diagnosis / Q000473:pathology; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000473:pathology; D009367:Neoplasm Staging; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000473:pathology; D014513:Ureter / Q000473:pathology; D014516:Ureteral Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014517:Ureteral Obstruction / Q000175:diagnosis* / Q000473:pathology; D014567:Urography / Q000295:instrumentation*; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis / Q000473:pathology
MR-Urographie mit der T2-gewichteten Turbospinechosequenz.