FDG-PET/CT in the Evaluation of Patients With Suspected Cholecystitis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00590395
Recruitment Status : Completed
First Posted : January 10, 2008
Last Update Posted : June 29, 2017
Information provided by (Responsible Party):
Alan D. Waxman, M.D., Cedars-Sinai Medical Center

Brief Summary:
This is a pilot study to investigate the ability of fluorodeoxyglucose-positron emission tomography (FDG-PET) and Positron emission tomography-computed tomography (PET/CT) as a direct method of detecting infection and/or inflammation of the gallbladder.

Condition or disease Intervention/treatment Phase
Cholecystitis Drug: 18FDG (an FDA-approved radiopharmaceutical) Not Applicable

Detailed Description:

Hepatobiliary iminodiacetic acid (HIDA) scan scintigraphy is a nuclear medicine scan used to evaluate patients suspected of having acute cholecystitis (infection/inflammation of the gallbladder). Because it is an indirect test that looks for obstruction of the cystic duct structure, there are many causes for a false-positive HIDA study. There is a need for a more sensitive and specific test that can accurately assess gallbladder infection and/or inflammation.

The purpose of this study is to determine the effectiveness of fluorodeoxyglucose (FDG) as a direct means of detecting patients with acute cholecystitis. FDG is an imaging agent that has previously been shown to accumulate in areas of infection and/or inflammation. The location and intensity of FDG accumulation in the body can be detected with a camera system called a "positron emission tomography" (PET) camera. In theory, this test should be effective in detecting acute infection and/or inflammation of the gallbladder.

Consenting participants will receive injection of FDG one hour prior to the FDG-PET/CT examination. The participant will then be imaged using a PET/CT machine, which is a special camera system that is capable of performing both a PET and CT scan at the same time. A CT scan is an anatomical imaging test and, for this research study, will mainly be used to localize the area of 18FDG accumulation recorded by the PET scan. The examination will take approximately one hour.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Other
Official Title: The Utility of FDG-PET and PET/CT in the Evaluation of Patients With Suspected Cholecystitis
Study Start Date : July 2007
Actual Primary Completion Date : January 2010
Actual Study Completion Date : July 2010

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: 1
20 patients with suspected acute cholecystitis and a positive HIDA will be included in the study. This is purposely a highly selective population which most likely will have surgical proof of the findings. Subjects will receive an FDG PET/CT exam to determine the presence of gallbladder inflammation/infection(cholecystitis). Please note that 18FDG is an FDA approved radiopharmaceutical.
Drug: 18FDG (an FDA-approved radiopharmaceutical)
Route: Intravenous, Dosage: 5-10mCi, frequency: Single Administration
Other Name: 2-deoxy-2-[18F] fluoro-D-glucose (18FDG)

Primary Outcome Measures :
  1. FDG PET/CT as a direct assessment of gallbladder inflammation/infection (cholecystitis) as opposed to the HIDA scan which provides an indirect assessment. [ Time Frame: 1-2 days through the post operative period ]

Secondary Outcome Measures :
  1. The number of false positives or negatives as validated by gallbladder surgery. [ Time Frame: 7 days following the operative procedure ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • known or high suspicion of cholecystitis
  • highly likely to undergo cholecystectomy
  • positive HIDA study
  • age >18 years old
  • provide written informed consent

Exclusion Criteria:

  • highly unlikely to proceed to surgery or biopsy
  • received an investigational drug within the past 30 days
  • pregnant or lactating
  • decline to provide written informed consent

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00590395

United States, California
Cedars-Sinai Medical Center, S. Mark Taper Foundation Imaging Center
Los Angeles, California, United States, 90048
Sponsors and Collaborators
Alan D. Waxman, M.D.
Principal Investigator: Alan D. Waxman, M.D. Cedars-Sinai Medical Center

Responsible Party: Alan D. Waxman, M.D., Director, Imaging / Nuclear Medicine / Nuclear Cardiology, Cedars-Sinai Medical Center Identifier: NCT00590395     History of Changes
Other Study ID Numbers: CSMC IRB Pro00007311
First Posted: January 10, 2008    Key Record Dates
Last Update Posted: June 29, 2017
Last Verified: June 2017

Keywords provided by Alan D. Waxman, M.D., Cedars-Sinai Medical Center:
HIDA scan

Additional relevant MeSH terms:
Acalculous Cholecystitis
Gallbladder Diseases
Biliary Tract Diseases
Digestive System Diseases
Fluorodeoxyglucose F18
Molecular Mechanisms of Pharmacological Action