Optimization of Cardiac MSCT Contrast Injection Protocols
| Autor: | Maximilian F. Reiser, Konstantin Nikolaou, Stefanie Busch, Christoph R. Becker, Kyongtae T. Bae, Thorsten R. C. Johnson, Carsten Rist, Alexander W Leber, Miles A. Kirchin |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
business.industry
Iomeprol Area under the curve chemistry.chemical_element medicine.disease Iodine Coronary arteries Coronary artery disease chemistry.chemical_compound medicine.anatomical_structure Bolus (medicine) chemistry Ventricle Hounsfield scale medicine Radiology Nuclear Medicine and imaging business Nuclear medicine |
| Zdroj: | Academic Radiology. 15:49-57 |
| ISSN: | 1076-6332 |
| DOI: | 10.1016/j.acra.2007.08.005 |
| Popis: | Rationale and Objectives Our aim was to evaluate the correlation of test bolus (TB) curve parameters with main bolus (MB) contrast density for cardiac 16-slice computed tomography, and to correlate observed enhancement with patient body weight. Materials and Methods Sixty patients with known or suspected coronary artery disease were included in a prospective double-blind study. Contrast material containing 300 mg iodine/mL (Iomeprol 300; Imeron 300, Bracco Imaging SpA, Milan, Italy) and 400 mg iodine/mL (Iomeprol 400; Imeron 400) was injected at a rate of 1 g of iodine/second. Contrast densities (Hounsfield units) of the MB were determined in the left cardiac system. The peak density (PD) of maximum attenuation and the area under the curve (AUC) of the TB curve were calculated for each patient. The dependency of MB contrast attenuation on these parameters and on patient body weight was evaluated. Results Positive correlations (r = 0.52 and r = 0.56, respectively; P Conclusions Strong correlation of the PD and AUC of the TB curve with the mean density of the MB is observed when patient body weight is considered. Contrast injection protocols may be optimized, and variations of MB contrast density in the left ventricle and main coronary arteries reduced, by taking these TB parameters and the weight of the patient into account. |
| Databáze: | OpenAIRE |
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