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[Observing the density increase curve after intravenous contrast medium administration using a bolus triggering
C A Stückle1, R Kickuth, E M Kirchner
1Klinik für Diagnostische Radiologie und Nuklearmedizin, Marienhospital Herne, Universitätsklinik.
Der Radiologe
|August 2, 2002
Summary
Bolus tracking systems in CT scans can show atypical patterns in cardiac failure. However, this method is not reliable for screening overall cardiopulmonary function.
Area of Science:
- Radiology
- Cardiology
- Medical Imaging
Background:
- Bolus tracking systems enhance contrast media timing in helical CT.
- Assessing cardiac function parameters using these systems is an area of interest.
Purpose of the Study:
- To investigate the utility of bolus tracking systems as a parameter for cardiac function assessment.
- To correlate bolus tracking measurements with invasive cardiac investigations.
Main Methods:
- Retrospective analysis of 64 patients undergoing bolus-triggered contrast-enhanced helical CT and invasive cardiac evaluation.
- Utilized Siemens Somatom Plus 4 Volume Zoom with C.A.R.E. Bolus software for contrast tracking.
- Categorized Hounsfield attenuation patterns post-contrast injection into three types.
Main Results:
- A significant correlation was found between Hounsfield attenuation patterns and left ventricular systolic pressure.
- No significant correlation was observed with diastolic pressures, right ventricular pressures, or ejection fraction.
- The bolus tracking system demonstrated 70% accuracy in detecting left heart failure.
Conclusions:
- Atypical Hounsfield attenuation patterns are frequently observed in cardiac failure using the C.A.R.E.-bolus system.
- This system is not recommended as a primary screening tool for cardiopulmonary function.