Academic Journal
P130 COMPARISON BETWEEN PWV MEASURED FROM CUTANEOUS LENGTH BY SPHYGMOCOR AND BY MRI LENGTH TRACED ALONG THE WHOLE AORTA
| Title: | P130 COMPARISON BETWEEN PWV MEASURED FROM CUTANEOUS LENGTH BY SPHYGMOCOR AND BY MRI LENGTH TRACED ALONG THE WHOLE AORTA |
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| Authors: | Marina Cecelja |
| Source: | Artery Research, Vol 24 (2018) |
| Publisher Information: | BMC, 2018. |
| Publication Year: | 2018 |
| Collection: | LCC:Specialties of internal medicine LCC:Diseases of the circulatory (Cardiovascular) system |
| Subject Terms: | Specialties of internal medicine, RC581-951, Diseases of the circulatory (Cardiovascular) system, RC666-701 |
| More Details: | Background: Accuracy of non-invasive PWV as m/sec is impeded by crude surface estimates of aortic length. We compared PWV measured using the Sphygmocor via surface length measurements with PWV measured using MRI with distance traced more precisely along the whole imaged aortic length. Methods: Magnetic resonance imaging (MRI) was performed in 74 asymptomatic women aged between 51–80 years of age. Carotid-femoral PWV was measured using Sphygmocor. The path distance between the carotid and femoral sites was estimated from the distance between the sternal notch and femoral artery at the point of applanation. Phase-contrast MRI was performed at the level of the aortic arch and distal to the aortic bifurcation to obtain aortic flow. Aortic distance was measured by tracing the centre of the aorta from a black-blood MRI sequence. Results: Mean (±SD) carotid-femoral transit time (TT) measured by Sphygmocor (58 ± 11 ms) was 2.9 [95% confidence interval (CI) 0.85–5.0]ms higher than aortic TT measured by MRI (54 ± 12 ms). The carotid-femoral surface distance estimate (552 ± 33 mm) was 15 [142–162]mm higher than the aortic length estimate (399 ± 32 mm). Corresponding PWVs estimated with Sphygmocor and MRI were 9.87 ± 2.1 and 7.63 ± 1.9 (P < 0.001) m/s, respectively. PWV differences between Sphygmocor and MRI decreased to 0.50 (0.13–0.86)m/s when Sphygmocor PWV was calculated using the MRI path length. Conclusion: In these older women, the PWV difference between Sphygmocor and MRI is reduced when MRI length estimates are used. The difference between PWV measured by Sphygmocor and MRI is in part due to the accuracy of distance measurements. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1876-4401 |
| Relation: | https://www.atlantis-press.com/article/125930137/view; https://doaj.org/toc/1876-4401 |
| DOI: | 10.1016/j.artres.2018.10.183 |
| Access URL: | https://doaj.org/article/b9683911aa014968a24e9ca569b22673 |
| Accession Number: | edsdoj.b9683911aa014968a24e9ca569b22673 |
| Database: | Directory of Open Access Journals |
| ISSN: | 18764401 |
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| DOI: | 10.1016/j.artres.2018.10.183 |
| Published in: | Artery Research |
| Language: | English |