Special Imaging

Question 1

Presents structures in different planes with equal clarity.

Uses contrast and is 10x better than plain film.

Answer 1

CT

Question 2

Visualizes occult fractures, bone fragment location, intra-articular fractures, calcified soft tissue lesions, and Brodie’s abscess.
Traumatic lesions, pathology, or anomalies

Answer 2

CT

Question 3

Imaging for:

• Anything in the LUNG
• Discitis, Osteomyelitis, Brodie’s abscess
• Aneurysms
• Spina Bifida, Spondylosis, Spinal Stenosis, Lateral Recess Stenosis
• Degenerative changes

Answer 3

CT

Question 4

What is CT measured in?

Answer 4

Hounsfield units

Question 5

Provides optimal visualization of spatial relationships and distinct soft tissue contrast to view: IVD, spinal cord, meninges, bone, meniscus, ligaments.

Answer 5

MRI

Question 6

Imaging for:

• Shows soft tissue contrast 100x better than CT
• No radiation dose; uses gadolinium; utilizes signal intensities; uses surface coils

Answer 6

MRI

Question 7

What type of special imaging is best for Multiple Sclerosis for plaqueing in the brain and spinal cord?

Answer 7

MRI

Question 8

What is best for AVN’s

Answer 8

MRI

Question 9

T1 weighted image in MRI

Answer 9

Fatty Pathologies (muscular dystrophy)

Question 10

T2 weighted image in MRI

Answer 10

Water Density

Question 11

Whatever is weighted is what color? Other bone denisity appears what color? What color is cortical bone?

Answer 11

Weighted is WHITE
Other Bone Density is GRAY
Cortical Bone is always BLACK (signal void)

Question 12

Dual Emission X-Ray Absorptometry –> measures Bone Densities for Osteoporosis

Answer 12

DEXA scan

Question 13

Uses an injection of radioactive substance (Technetium 99)

Measures body’s “attempt” to lay down new bone

Answer 13

Bone Scan (Bone Scintigraphy)

Question 14

What does a HOT Bone Scan indicate?

Answer 14

All AVN's
Blastic & Lytic Mets
Paget's
Hodgkin's
Fractures

Question 15

What does a COLD Bone Scan indicate?

Answer 15

Multiple Myeloma