| Autor: |
van Herwaarden, Joost A., Muhs, Bart E., Vincken, Koen L., Van Prehn, Joffrey, Teutelink, Arno, Bartels, Lambertus W., Moll, Frans L., Verhagen, Hence J.M. |
| Předmět: |
|
| Zdroj: |
Journal of Endovascular Therapy; Jun2006, Vol. 13 Issue 3, p406-414, 9p |
| Abstrakt: |
Purpose: To utilize dynamic magnetic resonance angiography (MRA) to characterize aortic stiffness (β) and elastic modulus (Ep) as indexes of wall compliance during the cardiac cycle and determine any influence of different endograft designs or the presence of endoleaks on these indexes. Methods: Eleven consecutive patients (11 men; median age 74 years, range 63-78) with abdominal aortic aneurysm (AAA) selected for endovascular repair were scanned pre- and postoperatively. Aortic area and diameter changes during the cardiac cycle were determined using dynamic MRA at 4 levels: 3 cm above the renal arteries, between the renal arteries, 1 cm below the renal arteries, and at the level of maximum aneurysm sac diameter. Ep and β were calculated. Data are presented as median (range); p<0.05 was considered significant. Results: Preoperatively, Ep and β were significantly higher at the level of the aneurysm sac compared to all other levels (p<0.05). Following EVAR, stiffness increased at this level (p
|
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
