Imaging

Question 1

Radiopaque substances appear _____ on X-rays

Radiolucent substances appear _____ on X-rays

Answer 1

Radiopaque substances appear WHITE on X-rays

Radiolucent substances appear BLACK on X-rays

Question 2

PA projection is when pts ____ side faces film; so it’s a ____ projection

AP projection is when pts ____ side faces film; so it’s a ____ projection

Left lateral projection is when pts ____ side faces film

Answer 2

PA projection is when pts ANTERIOR side faces film; so it’s a ANTERIOR projection

AP projection is when pts POSTERIOR side faces film; so it’s a POSTERIOR projection

Left lateral projection is when pts LEFT side faces film

Question 3

CT scans are based on _____ while MRIs are based on ______.

Answer 3

CT scans are based on RADIODENSITIES while MRIs are based on SIGNALING.

Question 4

Ultrasounds are good for looking at ______ when interface between surface and what’s around it are of different ______.

Answer 4

Ultrasounds are good for looking at SURFACES when interface between surface and what’s around it are of different DENSITIES.