Imaging Technology Flashcards
What are the (4) imaging modalities
- Xray
- CT
- MRI
- US
On an XRay, Air/Fat is observed as what color?
Dark; black/grey
What are the (2) types of XRays?
Which is more beneficial and why?
When should the latter be used?
A. Anterior-Posterior (AP) and Posterior-Anterior (PA), relative to the direction of the XRay beam.
B. The PA is more beneficial because there is less interference caused by the pericardial sac in AP XRays
C. Only when the patient is unable to stand or move.
XRays only occur in what dimensions?
2D
Describe the Soft tissue and Bone detail of XRays
Soft Tissue: Poor
Bone: Excellent
On a CT Scan, Bone and Contrast are observed as what colors?
Very light/White
What dimensions can CT be rendered in?
2D: basic CT
3D: Helical CT
Describe the detail of Soft-Tissue and Bone in CT’s
Soft-Tissue: Poor
Bone: Excellent
In what Dimensions can an MRI be rendered?
2D & 3D (Primarily 3D)
On an MRI, Fat is observed as what color?
T1: White
T2: Dark
T1 & T2 are the inverse of eachother
Describe the detail of Soft-Tissue and Bone detail from MRI’s
Soft-Tissue: Excellent
Bone: Poor
In what dimensions can US be rendered?
2D
3D
4D (Doppler US; US in motion)
Describe the Soft-Tissue and Bone detail in US
Soft-Tissue: Poor
Bone: Poor
Between the (4) modalities, give the Cost-trend, from Greatest to Least
Greatest | MRI > US > XRay > CT | Cheapest
Between the (4) modalities, give the detail of Soft-tissue trend, from best to worst
Best | MRI > CT > US/XRay | Worst
