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Dynamic magnetic resonance angiography of the aneurysm neck: Conformational changes during the cardiac cycle with possible consequences for endograft sizing and future design Joost A. van Herwaarden, MD, Lambertus W. Bartels, PhD, Bart E. Muhs, MD, Koen L. Vincken, PhD, Maud Y.A. Lindeboom, MD, PhD, Arno Teutelink, MD, Frans L. Moll, MD, PhD, Hence J.M. Verhagen, MD, PhD Journal of Vascular Surgery Volume 44, Issue 1, Pages (July 2006) DOI: /j.jvs Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 1 Levels at which transverse dynamic MRA scans were obtained. Level A, 1 cm below the lowest renal artery; level B, between the renal arteries; level C, 3 cm above the lowest renal artery. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 2 Preoperative and postoperative representative magnetic resonance angiography images at level A (A and B) and level C (C and D). The presence of the endograft does not affect image quality. The left side demonstrates preoperative images. The right side demonstrates postoperative images. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 3 Representative preoperative (A) and postoperative (B) images with the segmentation overlay shown. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 4 Minimal and maximal aortic area during cardiac cycles measured preoperatively and postoperatively at three anatomic levels (A, B, and C). Data are means ± SD. *P < .05. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 5 Preoperative and postoperative mean changes in aortic area during cardiac cycles at three anatomic levels (A, B, and C). Data are means ± SD. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 6 Preoperative and postoperative minimum and maximum aortic diameters in 256 axes obtained during cardiac cycles at three anatomic levels (A, B, and C). Data are means ± SD. *P < 0.05. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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Fig 7 Preoperative and postoperative mean changes of aortic diameters in 256 axes during cardiac cycles at three anatomical levels (A, B, and C). Data are means ± SD. Journal of Vascular Surgery , 22-28DOI: ( /j.jvs ) Copyright © 2006 The Society for Vascular Surgery Terms and Conditions
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