Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Schoellnast, H; Deutschmann, HA; Berghold, A; Fritz, GA; Schaffler, GJ; Tillich, M.
MDCT angiography of the pulmonary arteries: influence of body weight, body mass index, and scan length on arterial enhancement at different iodine flow rates.
AJR Am J Roentgenol. 2006; 187(4):1074-1078
Doi: 10.2214/AJR.05.0714
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- Führende Autor*innen der Med Uni Graz
- Schoellnast Helmut
- Co-Autor*innen der Med Uni Graz
- Berghold Andrea
- Deutschmann Hannes
- Fritz Gerald
- Schaffler Gottfried
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- Abstract:
- The purpose of this study was to assess whether body weight, body mass index, and scan length influence arterial enhancement during CT angiography (CTA) of the pulmonary arteries at different iodine flow rates. CTA examinations of the pulmonary arteries performed for routine clinical care of 120 patients between March and December 2003 were retrospectively evaluated. Patients had received either 120 mL of contrast medium with an iodine concentration of 300 mg I/mL (group A) or 90 mL of contrast medium with an iodine concentration of 400 mg I/mL (group B). The iodine dose was 36 g, and the injection rate was 4 mL/s in all examinations. The iodine flow rate was 1.2 g I/s in group A and 1.6 g I/s in group B. Arterial attenuation along the z-axis was measured per patient, and the influence of body weight, body mass index, and scan length on enhancement of the pulmonary arteries in the two groups was assessed. In group A and in group B, body weight and body mass index correlated significantly with mean enhancement along the z-axis (r = -0.35 and -0.26 for group A and -0.48 and -0.40 for group B). Scan length showed no correlation with pulmonary attenuation. Mean pulmonary artery enhancement was significantly higher in group B with a difference of 51 H compared with group A. Pulmonary artery attenuation in CTA of the pulmonary arteries shows a small but significant correlation with body weight and body mass index independently of the iodine flow rate used. A higher iodine flow rate improves pulmonary artery enhancement.
- Find related publications in this database (using NLM MeSH Indexing)
- Angiography - methods
- Body Mass Index -
- Body Weight -
- Contrast Media - administration & dosage
- Humans -
- Injections, Intravenous -
- Iohexol - administration & dosage Iohexol - analogs & derivatives
- Pulmonary Artery - radiography
- Radiographic Image Enhancement -
- Tomography, X-Ray Computed -
- Find related publications in this database (Keywords)
- arteries
- body mass index
- body weight
- CT angiography
- IV contrast agents
- thorax