MEDRADSC 3DA3 Lecture 4: CTA

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3DA3
• Professor: Dwight Mountford

Document Summary

Images: conjoined twins, aortic stenosis (right at the level where everything comes off (celiac artery) aneurysm/dilation secondary, extensive collateral vasculature, calcium on aorta. Cta versus ctv: cta vascular abnormalities, aneurysm, stenoses, pulmonary emboli- most common in cta, ctv evaluation of venous system, r/o thrombosis (do scan of patients legs- delayed to see the source of emboli) Conventional versus cta: cta cheaper, patient comfort- through iv (much better) Less prep for patient- not as important to npo: conventional has huge needle going into thigh, recovery time for patient, conventional- (cid:272)a(cid:374)"t (cid:271)e(cid:374)d leg fo(cid:396) (cid:1008) h(cid:396)s hou(cid:396)s o(cid:396) (cid:396)isk of a(cid:396)te(cid:396)ial (cid:271)leed. Less staffing: conventional cta nurse, radiologist, technologist, hca, availability, 3d images view from any plane. Requirements: patient preparation, acquisition parameters, contrast administration, postprocessing techniques. Patient preparation: patient history, cardiac output, how fast we should expect the contrast, explanation of procedure risks, consent form, breathing technique, angio-cath.