Carotid CT-angiography: Low versus standard volume contrast media and low kV protocol for 128-slice MDCT
| Autor: | Selçuk Yaşar, Giray Aynali, Mustafa Kayan, Mehmet Munduz, Ahmet Yeşildağ, Ergün Ceylan, Cem Parlak, Mert Köroğlu, Cemil Gürses, Aykut Recep Aktaş |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Carotid Artery Diseases Male medicine.medical_specialty Iohexol media_common.quotation_subject Contrast Media Radiation Dosage Sensitivity and Specificity Occlusion medicine Humans Contrast (vision) Radiology Nuclear Medicine and imaging Bolus tracking Aged media_common Computed tomography angiography Aged 80 and over Dose-Response Relationship Drug medicine.diagnostic_test business.industry Angiography Reproducibility of Results Dose-Response Relationship Radiation General Medicine Middle Aged medicine.disease Stenosis Carotid Arteries Female Tomography Radiology Tomography X-Ray Computed business Volume (compression) |
| Zdroj: | European Journal of Radiology. 81:2144-2147 |
| ISSN: | 0720-048X |
| Popis: | Availability and utilization of computed tomography angiography has been increasing recently. We aimed to assess the effectiveness of low amount of contrast media and low kV value in order to reduce possible side effects of contrast media and to provide optimization of kV value in the evaluation of the carotid artery with multi-detector computed tomography angiography. Forty one patients were randomized into two groups. Contrast media was administered at a dose of 1 ml/kg in group A patients and of 0.5 ml/kg in group B patients. kV value of 120 in group A and 100 in group B were chosen. Bolus tracking technique was used. Attenuation values of certain arterial segments were measured, and values over 200 HU were considered as significant. North American Symptomatic Carotid Endartherectomy Trial criteria were utilized in the evaluation of stenosis. Image quality in arterial segments of all cases was found to be sufficient for diagnosis. Arterial attenuation values were found to be higher in group B than group A. When compared separately in all arterial segments, there was no statistically significant difference between the groups. For stenosis, 615 arterial segments were evaluated. Moderate stenosis in eight segments and severe stenosis in three segments were identified in group A. Occlusion in three segments, severe stenosis in three segments, and moderate stenosis in 25 segments were detected in group B. Better image quality can be obtained, and the amount of contrast media can be reduced using low kV technique in carotid artery multi-detector computed tomography angiography examination. |
| Databáze: | OpenAIRE |
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