Sixty-four-detector CT Angiography of Infrarenal Aortic Neck Length and Angulation: Prospective Analysis of Interobserver Variability

Assessment of the longitudinal extension and angulation of the infrarenal aortic neck is associated with substantial observer variability, even if measurement is carried out according to a standardized protocol. Further studies are mandatory to assess dedicated technical approaches to minimize variance in the determination of the longitudinal extension and angulation of the infrarenal aortic neck.