MEDRADSC 3DA3 Lecture Notes - Lecture 3: Colonoscopy, Geographic Information System, Chronic Obstructive Pulmonary Disease

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

Document Summary

Recon vs reformat: recons: build images from raw data (can do before and after, reform: have images/voxels, rearrange them, put them in different form. 3d imaging: 3d imaging-4 steps for all techniques, data acquisition, creation of 3d space, processing for image display. Latest e(cid:448)olutio(cid:374) (cid:448)i(cid:396)tual e(cid:374)dos(cid:272)op(cid:455) a(cid:374)d (cid:448)i(cid:396)tual (cid:272)olonography struggling to gain widespread use: rationale for 3d, utilize vast amounts of data collected from patient by volume scanning. If trying to visualize internal structures skin/soft tissue would be made transparent to reveal internal structures. Consider the scenario below: you are scanning a patient post mvc to rule out injury to the abdominal organs, with a particular focus on the spleen. If blood vessel is close to bone: mip a(cid:396)tifa(cid:272)ts (cid:373)a(cid:455) ha(cid:448)e a (cid:858)st(cid:396)i(cid:374)g of (cid:271)eads(cid:859) appea(cid:396)a(cid:374)(cid:272)e. If using an old scanner with thick slices, not as often now: mip can be improved with thinner slices limiting the size of the volume under consideration.