RADI 203 - Quiz 4: Key Terms and Definitions for Radiation Doses and Symptoms

Which of the following can help reduce radiation exposure to the patient and/or personnel during fluoroscopy

- intermittent fluoroscopic foot switch

- use of pulse-progressive fluoroscopy

- 5 min reset timer

- shielding

1, 2, 3, and 4

During a fluoroscopy exam, the normal position for a radiologist has an exposure rate of approx

300 mR/min

A radiation source produced 900 mR/hr a 1 meter. How much exposure would a radiographer get if they stood 1 meter from the source for 40 mins?

600 mR/hr

An x-ray has an output intensity of 7.2 mR/mAs. Using 60 kVp, what would be the intensity if the beam if it passed through a wall with 0.11 mm of lead shielding? (At 60 kVp, 0.11 mm of lead equals 1 HVL)

3.6 mR/mAs

If the exposure rate of an x-ray tube is 15R/min at 30", what will the approx rate be at 55"

4.5 R/min

T or F: Fluoroscopic leaded aprons and gloves should be checked for damages, holes or tears at least once a month

false

According to your textbook, an effective image critique method is a 3-step process. Step 3 of this process would be

the recommendation of corrective action

In regards to film critique, a technical factor problem includes

visibility of detail

In regards to film critique, a procedural factor problem may involve

patient positioning or patient prep

T or F: Technical factor problems, procedural factor problems and equipment malfunction problems can be kept to a minimum with an effective quality control program

true

These are black branching tree like marks that are usually caused by low humidity

static discharge

This film artifact appear as tightly spaced, increased density artifacts aligned in the direction of the film through the processor and may occur when loading two films on processor without allowing first film to clear

wet pressure sensitization marks

This type of fog may occur when a film is processed beyond its expiration date

age

When comparing the male and female pelvis radiographs ...

females are more rounder and more angled

The SI joint can be classified as

synovial, mobility type: amphiarthrodial

T or F: The femoral neck can be located easily as 1-2" medial and 3-4" distal to the ASIS. The CR for an AP unilateral hip projection is at this point unless there is a hip prosthesis in which the CR will be directed 1-2" distal to the midfemoral neck

true

Which of the following statements are true regarding the posterior oblique pelvis: acetabulum (Judet method)

1) place patient in 25-degree posterior oblique

2) direct CR perpendicular and centered to 2" distal and 2" medial to downside ASIS (when anatomy of interest is downside)

3) align femoral head and acetabulum of interest to midline of tabletop and/or cassette

2 and 3

What type of CR angle is required for the AP axial "inlet" projection

40 degrees caudad

Symptoms of shock include all of the following except

- apprehension and restlessness

- pallor and weakness

- decreased pulse

- cool, clammy skin

decreased pulse

This type of shock is caused by severe blood and/or fluid loss from either internal bleeding or hemorrhage associated with trauma

hypovolemic

This type of diabetes may occur during pregnancy

gestational diabetes

Symptoms of seizures include

very subtle symptoms or movements, eye or muscle fluttering, loss of consciousness

According to the American Heart Association guidelines, what does one cycle consist of?

30 chest compressions followed by 2 rescue breaths