16-MDCT Angiography of Aortoiliac and Lower Extremity Arteries: Comparison with Digital Subtraction Angiography
| Autor: | Thomas Albrecht, Constanze Ribbe, E. Foert, Frank K. Wacker, Miles A. Kirchin, Bernhard C. Meyer, Robin Holtkamp, Martin Kruschewski |
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| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty Aortography Sensitivity and Specificity Pelvis medicine Humans Single-Blind Method Radiology Nuclear Medicine and imaging In patient cardiovascular diseases Aged Mdct angiography Peripheral Vascular Diseases Leg medicine.diagnostic_test business.industry musculoskeletal neural and ocular physiology Angiography Angiography Digital Subtraction Reproducibility of Results General Medicine Digital subtraction angiography Middle Aged Patient management Radiographic Image Enhancement body regions medicine.anatomical_structure Female Tomography Radiology Ankle Tomography X-Ray Computed business psychological phenomena and processes Artery |
| Zdroj: | American Journal of Roentgenology. 189:702-711 |
| ISSN: | 1546-3141 0361-803X |
| DOI: | 10.2214/ajr.07.2333 |
| Popis: | The objective of our study was to prospectively compare CT angiography (CTA) performed on a 16-MDCT scanner and digital subtraction angiography (DSA) in patients with peripheral arterial disease.CTA and DSA were compared in 50 patients. CTA was independently evaluated by two blinded observers. DSA was evaluated by two additional blinded observers in consensus. Consensus DSA served as the reference standard for comparisons with CTA in terms of diagnostic quality, grading of stenoocclusive lesions, visualization of collaterals, impact on patient management, and time required for analysis.No significant differences in diagnostic quality were observed between CTA and DSA above the ankle; both CTA observers noted significantly better visualization of pedal arteries (70 and 72 segments, respectively) than on DSA (57 segments). Of 958 stenoocclusive lesions on DSA, CTA observers 1 and 2 detected 933 and 929 lesions, respectively. Sensitivity and specificity for the detection of hemodynamically relevant (50%) lesions was 93.3% and 96.5% for observer 1 and 90.1% and 95.6% for observer 2. Collaterals were seen at 150 arterial levels on DSA compared with 97 and 92 levels on CTA (p0.05, both observers). Patient management decisions based on CTA were equivalent to those based on DSA in 49 of the 50 patients.CTA is an effective noninvasive alternative to DSA for the evaluation of peripheral arterial disease. |
| Databáze: | OpenAIRE |
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