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Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors
Published on: March 29, 2019
Gadolinium enhanced magnetic resonance urography for upper urinary tract malignancy
Naoki Takahashi1, James F Glockner, Robert P Hartman
1Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA. takahashi.naoki@mayo.edu
The Journal of Urology
|February 23, 2010
Summary
Gadolinium enhanced magnetic resonance urography accurately detects upper urinary tract tumors. This imaging technique shows high sensitivity and specificity for identifying malignancy, aiding in diagnosis.
Area of Science:
- Radiology
- Urologic Oncology
- Medical Imaging
Background:
- Upper urinary tract tumors are rare but serious conditions.
- Accurate detection is crucial for timely diagnosis and treatment.
Purpose of the Study:
- To evaluate the diagnostic accuracy of gadolinium-enhanced magnetic resonance urography (GEMRU) for detecting upper urinary tract tumors.
Main Methods:
- Retrospective analysis of 91 GEMRU studies in patients with suspected upper tract malignancy.
- Image review by two independent radiologists assessing tumor presence in specific urinary tract regions.
- Calculation of sensitivity, specificity, and accuracy.
Main Results:
- Overall accuracy for reviewer 1 was 93.7% and for reviewer 2 was 91.7%.
- Excluding patients with ureteral stents or nephrostomy tubes improved accuracy, reaching 97.7% for reviewer 1.
- High specificity (over 96%) was consistently observed for both reviewers.
Conclusions:
- Gadolinium-enhanced magnetic resonance urography is a highly accurate imaging modality for detecting upper urinary tract malignancies.
- GEMRU demonstrates significant potential in the diagnosis of urothelial cancers.
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