| Plain abdominal x-ray versus computerized tomography screening: sensitivity for stone localization after nonenhanced spiral computerized tomography. | |
| | |
MedLine Citation:
|
PMID: 10893571 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: Urolithiasis followup with plain abdominal x-ray requires adequate visualization of the calculus on the initial x-ray or computerized tomography (CT) study. We compared the sensitivity of plain abdominal x-ray versus CT for stone localization after positive nonenhanced spiral CT. MATERIALS AND METHODS: We evaluated 46 consecutive nonenhanced spiral CT studies positive for upper urinary tract lithiasis for which concurrent plain abdominal x-rays were available. X-ray and CT studies were compared for the ability to visualize retrospectively a stone given its location by CT. A consensus of 1 radiologist and 3 urologists was reached in each case. Cross-sectional stone size and maximum length were measured on plain abdominal x-ray. RESULTS: Plain abdominal x-ray and scout CT had 48% (22 of 46 cases) and 17% (8 of 46) sensitivity, respectively, for detecting the index stone (p <0.00004). Of the 39 stones overall visualized on plain abdominal x-ray only 19 (49%) were visualized on scout CT. Mean cross-sectional area and length of the stones on scout CT were 0.34 cm.2 (approximately 6 x 5.5 mm.) and 6. 5 mm., respectively, while the average size of those missed was 0.11 cm.2 (approximately 4 x 3 mm.) and 3.6 mm. The mean size differences in the groups were highly significant (p <0.0009). CONCLUSIONS: Plain abdominal x-ray is more sensitive than scout CT for detecting radiopaque nephrolithiasis. Of the stones visible on plain abdominal x-ray 51% were not seen on CT. To facilitate outpatient clinic followup of patients with calculi plain abdominal x-ray should be performed when a stone is not clearly visible on scout CT. |
| | |
Authors:
|
S V Jackman; S R Potter; F Regan; T W Jarrett |
Publication Detail:
|
Type: Comparative Study; Journal Article |
Journal Detail:
|
Title: The Journal of urology Volume: 164 ISSN: 0022-5347 ISO Abbreviation: J. Urol. Publication Date: 2000 Aug |
Date Detail:
|
Created Date: 2000-09-12 Completed Date: 2000-09-12 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0376374 Medline TA: J Urol Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 308-10 Citation Subset: AIM; IM |
Affiliation:
|
James Buchanan Brady Urological Institute and Department of Radiology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Humans Kidney Calculi / radiography Radiography, Abdominal / methods* Retrospective Studies Sensitivity and Specificity Tomography, X-Ray Computed / methods* Ureteral Calculi / radiography Urinary Calculi / radiography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Relationship of frequency, age, sex, stone weight and composition in 15,624 stones: comparison of re...
Next Document: Intracranial aneurysms and autosomal dominant polycystic kidney disease: followup study by magnetic ...