Document Detail

Corn oil emulsion: a simple cholecystagogue for diagnosis of chronic acalculous cholecystitis.
MedLine Citation:
PMID:  15632036     Owner:  NLM     Status:  MEDLINE    
This study investigated the use of a corn oil emulsion as an inexpensive alternative to sincalide in the scintigraphic diagnosis of chronic acalculous cholecystitis (CAC). METHODS: Thirty patients with abdominal or right upper quadrant pain underwent (99m)Tc-disofenin hepatobiliary imaging for 60 min. After gallbladder filling, 30 mL of corn oil emulsion were administered orally to all patients followed by dynamic imaging for an additional 60 min in all patients and for 90 min in 26 patients. Gallbladder emptying kinetics were determined with gallbladder ejection fractions calculated at 30, 60, and 90 min. The results were compared with histopathologic or clinical follow-up data. RESULTS: Corn oil emulsion was found to be palatable and free of side effects in all patients. Seven of the 30 patients had histopathologic evidence of CAC, whereas the remaining 23 did not have evidence of gallbladder disease based on clinical follow-up. The 30-, 60-, and 90-min gallbladder ejection fractions were determined to be 25% +/- 22% (mean +/- SD), 47% +/- 28%, and 62% +/- 29%, respectively. Receiver-operating-characteristic analysis showed that the 60-min gallbladder ejection fraction best distinguished between CAC and non-gallbladder disease with an area under the curve of 0.963. A 60-min gallbladder ejection fraction of < or = 20% had 100% sensitivity, 96% specificity, 88% positive predictive value, 100% negative predictive value, and 97% overall accuracy for the diagnosis of CAC. CONCLUSION: Standardized corn oil emulsion appears to be an adequate and well-tolerated gallbladder stimulant. Based on receiver-operating-characteristic analysis, a 60-min gallbladder ejection fraction of < or = 20% using this simple cholecystagogue results in high diagnostic accuracy for CAC.
Twyla B Bartel; Malik E Juweid; James A Ponto; Michael M Graham
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Publication Detail:
Type:  Clinical Trial; Journal Article; Validation Studies    
Journal Detail:
Title:  Journal of nuclear medicine : official publication, Society of Nuclear Medicine     Volume:  46     ISSN:  0161-5505     ISO Abbreviation:  J. Nucl. Med.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2005-01-05     Completed Date:  2005-03-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0217410     Medline TA:  J Nucl Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  67-74     Citation Subset:  IM    
Division of Nuclear Medicine, Department of Radiology, University of Iowa Hospitals and Clinics, 200 Hawkins Dr., Iowa City, IA 52242, USA.
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MeSH Terms
Acalculous Cholecystitis / radionuclide imaging*
Cholagogues and Choleretics / diagnostic use*
Chronic Disease
Corn Oil / diagnostic use*
Middle Aged
Radioisotope Dilution Technique
Radiopharmaceuticals / diagnostic use
Reproducibility of Results
Sensitivity and Specificity
Technetium Tc 99m Disofenin / diagnostic use*
Reg. No./Substance:
0/Cholagogues and Choleretics; 0/Emulsions; 0/Radiopharmaceuticals; 0/Technetium Tc 99m Disofenin; 8001-30-7/Corn Oil

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

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