Unit 4: Wk 1

Question 1

What 3 things do radiographic images require?

Answer 1

• x ray beam source
• pt
• x-ray film

Question 2

Basic equipment components of radiographic image

Answer 2

generation of xrays in xray tube
beaming xrays to pt
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Question 3

Radiodensity

Answer 3

combination of a tissue’s physical qualities (composition and thickness) that determine how much radiation it absorbs from the xray beams

Question 4

Radiographic density

Answer 4

the amt of blackening on the radiograph

Question 5

Radiolucent

Answer 5

easily penetrates by xrays

Question 6

Radiodense

Answer 6

increased radiodensity (appears more white)

Question 7

Radiopaque

Answer 7

not easily penetrated by xrays

Question 8

What are the 4 major radiodensities?

Answer 8

Air - black
Fat - grey black
Water - grey
Bone - white

Question 9

What are voluntary and involuntary factors that affect the image quality recorded detail (sharpness)

Answer 9

Voluntary: pt squirming
Involuntary: peristalsis in gut

Question 10

Which imaging technology should be used first and what are the factors that affect this decision?

Answer 10

Routine radiographs: established series of radiographs that provide the most visualization of anatomy with least exposure to radiation

Use ACR Appropriateness criteria to decide if imaging is needed and what should be done first

Question 11

If you have a serious trauma patient come in, what type of imaging do they need?

Answer 11

CT Scan

Question 12

Interventional radiology definition and examples

Answer 12

Invasive or surgical radiology

• fluoroscopy !! MOST COMMON
• catheters, needles, cannulas, balloons, stents
• vascular: angioplasty, thrombolysis, chemo infusion
• nonvascular: biopsies of lesions, abscess drainage, screw placement

Question 13

Why do PTs need knowledge about imaging?

Answer 13

Bc it’s associated w/ improved patient management and cost containment

Info we seek is different than physician; it may not be in the report

Question 14

What should PT be able to do with diagnostic imaging information? In terms of decisions, reasoning, screenings, and communication?

Answer 14

• recognize when imaging is needed to complete a comprehensive exam
• integrate info from radiologists written report into the PT treatment plan
• understand the image for info that may not be in written report
• communicate effectively abt imaging w/ other professionals

Question 15

Where do PTs have the ability to refer patients for diagnostic imaging?

Answer 15

NOT FLORIDA- ITS PROHIBITED
- Wisconsin is the only state that allows it

Question 16

Tools that PTs have for making decisions about when an imaging referral is appropriate?

Answer 16

CPGs
Ottawa knee rules
ACR Appropriateness Criteria