MEDRADSC 3DA3 Lecture Notes - Lecture 3: Stereo Display, Depth Perception, Volume Rendering

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3DA3
• Professor: Lyndsay Simmons

Document Summary

Criteria for high quality images: same dfov, same image center, no missing slices (contiguous), no gantry angle. Allow us to define extent of injury along the length/width of the patient"s body. Remember: ct is technically 2d imaging looking at 3d structures; 3rd dimension = slice thickness. Upper orthogonal coronal mpr demos an apparent narrowing of the l main bronchus. Curved mprs - used to view curving structures demo open patency. User applies a user defined trace to the target airway or vessel. Why are mprs referred to as 2d & how do they differ from 3d. 2d not 3d 2d images always represent the original attenuation values. Beneficial when imaging tortuous structures, whether there is a true stricture in a hollow structure. Tracing the target (ray through the viewer"s eye through the volume of data that we intend to reconstruct) 2nd image shows that there is actually no narrowing. Curved mpr distorts anatomy in the surrounding area.