| Effectiveness of abdominal compression during helical renal CT. | |
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MedLine Citation:
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PMID: 11721809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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RATIONALE AND OBJECTIVES: The authors performed this study to assess the effect of abdominal compression on opacification and distention of the proximal renal collecting system during helical computed tomography (CT). MATERIALS AND METHODS: Abdominal compression was applied during helical CT in 31 patients who were scanned 150 and 300 seconds after initiating a dynamic bolus injection of contrast material. Two reviewers assessed renal collecting system opacification and measured the maximal short-axis diameter of the collecting system at three locations: the upper pole, the lower pole, and the proximal ureter. A similar evaluation was performed in a control group of 29 patients who underwent CT without compression at 300 seconds after initiating the injection of contrast material. RESULTS: Both reviewers noted collecting system opacification at all locations in 52 of 56 noncompressed collecting systems scanned at 300 seconds, 57 of 59 compressed collecting systems scanned at 300 seconds, but only 26 of 59 compressed collecting systems scanned at 150 seconds. Measured collecting system distention was statistically significantly greater at 300 seconds in patents who received compression than in patients who did not (P = .0013). For patients who received compression, measured collecting system distention was statistically significantly greater on scans obtained at 300 seconds than on scans obtained at 150 seconds (P = .0001). CONCLUSION: Abdominal compression during renal helical CT produces a detectable increase in renal collecting system distention. In patients who receive compression, scanning at 300 seconds rather than at 150 seconds results in greater collecting system distention and more consistent opacification. |
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Authors:
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E M Caoili; R H Cohan; M Korobkin; J F Platt; I R Francis; A Gebremariam; J H Ellis |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Academic radiology Volume: 8 ISSN: 1076-6332 ISO Abbreviation: Acad Radiol Publication Date: 2001 Nov |
Date Detail:
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Created Date: 2001-11-27 Completed Date: 2002-08-26 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9440159 Medline TA: Acad Radiol Country: United States |
Other Details:
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Languages: eng Pagination: 1100-6 Citation Subset: IM |
Affiliation:
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Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-9723, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Abdomen Adolescent Adult Aged Aged, 80 and over Artifacts Female Humans Kidney Diseases / radiography* Kidney Tubules, Collecting / radiography* Male Middle Aged Pressure Time Factors Tomography, X-Ray Computed / methods* Ureter / radiography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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