Related Experiment Videos
Gallbladder opacification 12-24 h after angiography by CT examination: a multivariate analysis
H Yamazaki1, H Oi, M Matsushita
1Department of Radiation Oncology, Biomedical Research Center, Osaka University Medical School, Yamadaoka 2-2, Suita Osaka, Japan.
Abdominal Imaging
|November 1, 1996
Summary
Gallbladder opacification is common after angiography, occurring in 60% of patients on delayed CT scans. Factors like contrast type and bilirubin levels influence its occurrence.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Delayed gallbladder opacification after angiography is a recognized phenomenon.
- Understanding its incidence and contributing factors is crucial for accurate interpretation of delayed CT scans.
Purpose of the Study:
- To determine the incidence of gallbladder opacification on delayed computed tomography (CT) scans performed 12-24 hours after angiography.
- To identify predisposing factors associated with gallbladder opacification in this patient cohort.
Main Methods:
- A cohort of 389 patients undergoing delayed CT (12-24 hours post-angiography) was analyzed.
- Univariate and multivariate statistical analyses were employed to identify significant factors.
Main Results:
- Gallbladder opacification was observed in 60% (233/389) of patients.
- Contrast medium type (e.g., ioxaglate, iohexol), total bilirubin, and serum creatinine levels were significant independent predictors.
- Higher opacification rates were associated with specific contrast agents and altered renal/hepatobiliary function (lower bilirubin, higher creatinine).
Conclusions:
- Gallbladder opacification is a frequent finding on delayed CT after angiography, not necessarily indicative of pathology.
- It is particularly noted with modern contrast media and can occur in patients with normal or abnormal renal and hepatobiliary function.