Aortic aneurysm pulsatile wall motion imaged by cine MRI: a tool to evaluate efficacy of endovascular aneurysm repair?
OBJECTIVE
to evaluate cine MRI as a means of determining the two-dimensional pulsatile wall motion (2D-PWM) of abdominal aortic aneurysm (AAA).


METHODS
prospective study of 21 patients with AAA. 2D-PWM was defined as change in cross-sectional area.


RESULTS
the median diastolic area was 28 cm(2) (intraquartile range, IQR, 22-31 cm(2)) and the median (IQR) 2D-PWM was 0.25 (0.10-0.40) cm(2). Assuming that the AAA is circular in cross-section this represents a median (IQR) diameter increase of 0.3 (0.1-0.4) mm. However, local wall displacements up to 2 mm were present in varying directions, without significant change in surface area.


CONCLUSIONS
AAA PWM is negligible and may not therefore be a potential tool to assess efficacy of endovascular aneurysm exclusion.
Vos
A W F
AW
Department of Surgery, Vrije Universiteit Medical Center, Amsterdam, The Netherlands.
Wisselink
W
W
Marcus
J T
JT
Manoliu
R A
RA
Rauwerda
J A
JA
D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000503:physiopathology* / Q000601:surgery*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007089:Image Enhancement; D019028:Magnetic Resonance Imaging, Cine; D008297:Male; D008875:Middle Aged; D011673:Pulsatile Flow / Q000502:physiology*; D015203:Reproducibility of Results; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures