Using DynaCT for the assessment of ilio-femoral arterial calibre, calcification and tortuosity index in patients selected for trans-catheter aortic valve replacement

Crowhurst, James A., Campbell, Douglas, Raffel, Owen C., Whitby, Mark, Pathmanathan, Pavthrun, Redmond, Stanley, Incani, Alexander, Poon, Karl, James, Christopher, Aroney, Constantine, Clarke, Andrew and Walters, Darren L. (2013) Using DynaCT for the assessment of ilio-femoral arterial calibre, calcification and tortuosity index in patients selected for trans-catheter aortic valve replacement. International Journal of Cardiovascular Imaging, 29 7: 1537-1545. doi:10.1007/s10554-013-0221-y


Author Crowhurst, James A.
Campbell, Douglas
Raffel, Owen C.
Whitby, Mark
Pathmanathan, Pavthrun
Redmond, Stanley
Incani, Alexander
Poon, Karl
James, Christopher
Aroney, Constantine
Clarke, Andrew
Walters, Darren L.
Title Using DynaCT for the assessment of ilio-femoral arterial calibre, calcification and tortuosity index in patients selected for trans-catheter aortic valve replacement
Journal name International Journal of Cardiovascular Imaging   Check publisher's open access policy
ISSN 1569-5794
1875-8312
Publication date 2013-10-01
Sub-type Article (original research)
DOI 10.1007/s10554-013-0221-y
Volume 29
Issue 7
Start page 1537
End page 1545
Total pages 9
Place of publication Dordrecht, Netherlands
Publisher Springer
Language eng
Formatted abstract
Adequate vascular access for femoral transcatheter 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.
Keyword DynaCT
TAVR
Vessel calibre
Tortuosity
Calcification
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Medicine Publications
 
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