TY - JOUR
T1 - The influence of electrocardiogram-gated computed tomography reconstruction into 8 or 10 cardiac phases on cardiac-pulsatility-induced motion quantification of stent grafts in the aorta
AU - Simmering, Jaimy A.
AU - Zagers, Deborah A.
AU - Geelkerken, Robert H.
AU - Kuipers, Henny
AU - te Riet o.g. Scholten, Gerben A.
AU - Reijnen, Michel M.P.J.
AU - Slump, Cornelis H.
N1 - Funding Information:
This work was funded by unrestricted grants from Terumo Aortic and by the PPP Allowance made available by Health∼Holland, Top Sector Life Sciences & Health. Permission to publish the results was not needed.
Publisher Copyright:
© 2023 Society for Vascular Surgery
PY - 2023
Y1 - 2023
N2 - Objective: The goal of this study was to determine to what extent aortic stent graft motion quantification is comparable between electrocardiogram (ECG)-gated computed tomography (CT) scans with reconstructions into 8 and 10 cardiac phases on CT scanners from two different vendors.Methods: An experimental setup that induces motion of an aortic stent graft, according to a predefined aortic blood pressure wave, was placed in two CT scanners of different vendors. The stent graft motion was captured using an ECG-gated CT technique and quantified using dedicated analysis algorithms. The calculated motion amplitudes and total traveled path lengths of stent segmentations were compared between scans reconstructed into 8 and 10 phases and between the scanners, after validation with sensor measurements and repeated measurements.Results: No difference in motion amplitudes in z-direction (craniocaudal direction) was observed between the reconstructions into 8 and 10 phases (0.02 mm; 95% confidence interval [CI], –0.01 to 0.05 mm; P =.358). The z-amplitudes differed by 0.04 mm (95% CI, 0.01-0.07 mm; P =.003) between the different CT scanners. Path lengths differed 0.07 mm (95% CI, 0.01-to 0.13 mm; P =.013) between the reconstructions into 8 and 10 phases and 0.13 mm (95% CI, 0.06-0.17 mm; P <.001) between the different scanners.Conclusions: The motion amplitudes can accurately be compared between 8 and 10 phases and between the two scanners, without differences larger than the voxel size of 0.3 × 0.3 × 0.5 mm. Clinical motion analysis results of different ECG-gated CT scans and CT scanners can be compared up to the accuracy of the CT scan.
AB - Objective: The goal of this study was to determine to what extent aortic stent graft motion quantification is comparable between electrocardiogram (ECG)-gated computed tomography (CT) scans with reconstructions into 8 and 10 cardiac phases on CT scanners from two different vendors.Methods: An experimental setup that induces motion of an aortic stent graft, according to a predefined aortic blood pressure wave, was placed in two CT scanners of different vendors. The stent graft motion was captured using an ECG-gated CT technique and quantified using dedicated analysis algorithms. The calculated motion amplitudes and total traveled path lengths of stent segmentations were compared between scans reconstructed into 8 and 10 phases and between the scanners, after validation with sensor measurements and repeated measurements.Results: No difference in motion amplitudes in z-direction (craniocaudal direction) was observed between the reconstructions into 8 and 10 phases (0.02 mm; 95% confidence interval [CI], –0.01 to 0.05 mm; P =.358). The z-amplitudes differed by 0.04 mm (95% CI, 0.01-0.07 mm; P =.003) between the different CT scanners. Path lengths differed 0.07 mm (95% CI, 0.01-to 0.13 mm; P =.013) between the reconstructions into 8 and 10 phases and 0.13 mm (95% CI, 0.06-0.17 mm; P <.001) between the different scanners.Conclusions: The motion amplitudes can accurately be compared between 8 and 10 phases and between the two scanners, without differences larger than the voxel size of 0.3 × 0.3 × 0.5 mm. Clinical motion analysis results of different ECG-gated CT scans and CT scanners can be compared up to the accuracy of the CT scan.
KW - Aorta
KW - Dynamic
KW - ECG-gated computed tomography
KW - Endovascular procedures
KW - Stent graft
KW - UT-Gold-D
UR - http://www.scopus.com/inward/record.url?scp=85176555564&partnerID=8YFLogxK
U2 - 10.1016/j.jvssci.2023.100131
DO - 10.1016/j.jvssci.2023.100131
M3 - Article
AN - SCOPUS:85176555564
SN - 2666-3503
VL - 4
JO - JVS-Vascular Science
JF - JVS-Vascular Science
M1 - 100131
ER -