Using DynaCT for the assessment of ilio-femoral arterial calibre, calcification and tortuosity index in patients selected for trans-catheter aortic valve replacement
| Autor: | Douglas Campbell, Andrew Clarke, James A. Crowhurst, Pavthrun Pathmanathan, Karl Poon, Darren L. Walters, Christopher James, Mark Whitby, C. Aroney, Alexander Incani, Stanley Redmond, Owen Christopher Raffel |
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| Rok vydání: | 2013 |
| Předmět: |
Male
Cardiac Catheterization medicine.medical_specialty medicine.medical_treatment Contrast Media Femoral artery Radiation Dosage Iliac Artery Severity of Illness Index Imaging Three-Dimensional Aortic valve replacement Predictive Value of Tests medicine.artery Multidetector Computed Tomography medicine Humans Radiology Nuclear Medicine and imaging Vascular Calcification Cardiac imaging Aged Cardiac catheterization Aged 80 and over Heart Valve Prosthesis Implantation medicine.diagnostic_test business.industry Patient Selection Aortic Valve Stenosis medicine.disease Femoral Artery medicine.anatomical_structure Aortic valve stenosis Angiography Radiographic Image Interpretation Computer-Assisted Female Radiology Cardiology and Cardiovascular Medicine business Calcification Artery |
| Zdroj: | The International Journal of Cardiovascular Imaging. 29:1537-1545 |
| ISSN: | 1573-0743 1569-5794 |
| DOI: | 10.1007/s10554-013-0221-y |
| Popis: | Adequate vascular access for femoral trans-catheter aortic valve replacement is fundamental to the success of the procedure. Assessment of vascular calibre, tortuosity and calcification is performed by angiography and multi-slice computed tomography (MSCT). Can DynaCT provide the same information as MSCT? 15 Patients underwent MSCT, angiography and DynaCT. Vessel diameter measurements were taken in three positions of the left and right ilio-femoral arteries. Tortuosity was assessed using an index of the direct distance and the distance taken by the artery between two points. Calcification was assessed in MSCT and DynaCT using a simple scoring system. Concordance correlation coefficient of arterial calibre between angiography and MSCT was 0.96 (95 % CI 0.94-0.97). DynaCT and angiography was 0.94 (95 % CI 0.91-0.96) and Dyna CT and MSCT, 0.95 (95 % CI 0.92-0.97). Bland-Altman tests demonstrate a mean difference between the angiogram and the MSCT of 0.06 mm (+0.97, -1.42), angiogram and DynaCT, 0.13 mm, (+1.00, -0.87), DynaCT and MSCT, 0.2 mm, (+1.15, -0.76). Tortuosity comparisons gave a median tortuosity index for MSCT 1.29 and DynaCT 1.23 (p = 0.472). Calcification comparisons of MSCT and DynaCT using correlation coefficients demonstrate a correlation of 0.245 (p = 0.378). Effective radiation doses were: DynaCT; 3.63 ± 0.65 mSv and angiography; 0.57 ± 0.72 mSv, MSCT; 7.15 ± 2.58 mSv. DynaCT is equal to MSCT and angiography in assessing femoral artery calibre. Like MSCT, it can assess tortuosity and can produce 3D images but is inferior in the assessment of calcification. |
| Databáze: | OpenAIRE |
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