| Sensitivity of CT scout radiography and abdominal radiography for revealing ureteral calculi on helical CT: implications for radiologic follow-up. | |
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MedLine Citation:
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PMID: 10915669 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: We compared the sensitivity of CT scout radiography with that of abdominal radiography in revealing ureteral calculi on unenhanced helical CT. MATERIALS AND METHODS: Over a 6-month period, patients presenting to the emergency department with acute flank pain were examined with standard abdominal radiography and unenhanced helical CT, which included CT scout radiography. In 60 patients in whom a diagnosis of ureteral calculus was made, CT scout radiographs and abdominal radiographs were examined by two interpreters who assessed whether stones could be visualized. All CT scout radiographs were viewed on a workstation using optimized window settings. RESULTS: CT scout radiography and abdominal radiography revealed 28 (47%) and 36 (60%) of 60 ureteral calculi, respectively. All ureteral calculi that appeared on CT scout radiography also appeared on abdominal radiography. However, eight calculi that were visible on abdominal radiography were not visible on CT scout radiography. CT scout radiography and abdominal radiography revealed 28% and 46% of 39 calculi less than or equal to 3 mm in diameter, respectively. For 21 calculi larger than 3 mm, the sensitivity of CT scout radiography and abdominal radiography was 81% and 86%, respectively. CONCLUSION: Abdominal radiography is more sensitive than CT scout radiography in revealing ureteral calculi; however, some calculi revealed on unenhanced helical CT cannot be seen on either abdominal radiography or CT scout radiography. Ureteral calculi not visible on either study can only be followed, when necessary, with unenhanced helical CT. |
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Authors:
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Z Assi; J F Platt; I R Francis; R H Cohan; M Korobkin |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 175 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2000 Aug |
Date Detail:
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Created Date: 2000-08-23 Completed Date: 2000-08-23 Revised Date: 2008-02-15 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 333-7 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, University of Michigan Hospital, Ann Arbor 8109-0030, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Colic / radiography Emergencies Follow-Up Studies Humans Kidney Diseases / radiography Male Middle Aged Sensitivity and Specificity Tomography, X-Ray Computed* / methods Ureteral Calculi / radiography* |
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