Document Detail


Critical factors in the image clarity of operative cholangiography.
MedLine Citation:
PMID:  6656238     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To evaluate image clarity in operative cholangiography with changing radiographic variables, in vitro experiments were performed in which 1-mm radiographically nonopaque biliary calculi in tubes were examined. Variables changed in these studies were tube caliber (6, 13 and 20 mm), contrast concentration (15, 30, and 60%), X-ray exposures (1, 2, 4, 8, 16, 32, 64, and 128 mAs) and location of calculi (central or peripheral). Sensitivity for the detection of calculi and the clarity of contrast radiographic images depended upon these variables. Reduced contrast concentration or increased radiographic exposure were needed for large caliber tubes. Central small calculi required more exposure than peripheral calculi. Practical inferences from these studies can be summarized as guidelines for performing operative cholangiography: (1) Surgeons should become aware of exposure settings used on the radiographic equipment in the operating room. In particular, the milliampere-seconds-setting is an important variable. (2) Normal size and slightly enlarged ducts should be injected with 30% radiographic contrast. (3) Ducts which are 20 mm or more in diameter should be injected with 15% contrast. (4) Variable radiographic exposures may be necessary to demonstrate centrally and peripherally located calculi, especially for small calculi in large ducts.
Authors:
J Machi; B Sigel; D G Spigos; J C Beitler; J R Justin
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Publication Detail:
Type:  In Vitro; Journal Article    
Journal Detail:
Title:  The Journal of surgical research     Volume:  35     ISSN:  0022-4804     ISO Abbreviation:  J. Surg. Res.     Publication Date:  1983 Dec 
Date Detail:
Created Date:  1984-02-14     Completed Date:  1984-02-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376340     Medline TA:  J Surg Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  480-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Bile Duct Diseases / radiography
Cholangiography / methods*,  standards
Cholelithiasis / radiography*
Contrast Media
Humans
Chemical
Reg. No./Substance:
0/Contrast Media

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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