Analysis of Respiration-induced Deformities of the Visceral and Renal Arteries Before and After Stenting

"The study procedure foresees to take images during a deep breath as well as deep exhalation. This second measurement does not require the administration of an additional amount of contrast material. However, the exposure time to ionising radiation is doubled. The examination uses helical acquisition in fast mode. The duration of the helix is of the order of 2 seconds in the inspiration phase, then there is a delay of 5 seconds of machine time (half-turn) and again 2 seconds of exposure in the expiration phase, i.e. 4 seconds of actual exposure to ionizing radiation, the time of image taking and 9 seconds the total time of the examination."