STATE FLUOROSCOPY EXAM PRACTICE 116

Principles & Techniques of Fluoroscopy – Self Study RT 244

STATE FLUOROSCOPY EXAM PRACTICE (#116)

(2011 – Modification - omit the questions highlighted in GREEN) DC

• The biological effects of radiation are

known to be influenced by all of the

following EXCEPT the:

• type of radiation and dose rate

deliver to the tissue

• size of the cells in the tissue

exposed

• total dose received by the tissue
• type of cells in the tissue exposed

• As the kilovoltage peak is increased and

the milliampere seconds correspondingly decreased, which of the following occurs?

• image contrast increases
• image distortion increases
• patient skin exposure increases
• patient skin exposure decreases

• The greatest contribution of

unnecessary radiation exposure to the patient comes from the x-ray operator’s failure occurs?

• collimate the x-ray beam to the area

of clinical interest only

• use proper gonadal shielding
• use fast screens and films
• use proper exposure (technical)

factors

• All of the following must be posted in

areas where x-ray producing machines

are utilized EXCEPT:

• each x-ray supervisor and operator

permit

• each certified radiologic and

operator permit

• Radiologic Health Department Form

RH-2364, “Notice to Employees”

• each physician’s license for the

healing arts

• During a 2-minute (fluoroscopy

exposure time) routine upper G.I. series examination, a typical x-ray exposure to

the patient is:

• 0.5 roentgens
• 1.0 roentgens
• 6.0 roentgens
• 30.0 roentgen

• The California Radiation Control

Regulations define dose to mean radiation absorbed per unit mass.Whole-Body dose means exposure to

which of the following: I Major portions

of the whole body II Head and trunk III Gonads IV Lens of the eye V Active blood-forming organs VI Whole body

• I only b. I, III, IV & VI only
• I & IV only d. all of the above

• According to the California radiation

Control Regulations, all EXCEPT which of the following is defined as an occupational dose? The dose received

by any occupationally exposed person:

• in a controlled area
• in the course of employment
• during the course of training
• for his/her own medical or dental

diagnosis

• The major source of secondary radiation

in radiography is the:

• walls, floor and ceiling
• cassette 1 / 2

• patient’s body
• x-ray tabletop

• What kind of barrier, if any, must be in all

walls, floors and ceilings

• barrier equivalent to 1.5 mm of

aluminum

• primary barrier
• secondary barrier
• no barrier is needed

• Film badges/ dosimeters are used by

radiation workers, because:

• they are the only reliable means

of dose measurement II. they absorb part of the radiation and thus protect the worker from overexposure III. they are a practical means of providing long-term exposure records IV. they can measure exposure to the worker with reasonable accuracy

• I and III only b. II and IV only
• III and IV only d. I and II only

• Four fluoroscopic system equipped with

an automatic brightness control ( automatic exposure control) mechanism and where the x-ray tube is fixed below the table, moving the image intensifier

away from the patient will:

• reduce the image size of an

anatomic structure

• increase the size of the radiation

field at the table top

• decrease patient dose
• increase patient dose

• If the exposure area is doubled by

opening the collimator, patient dose and

exposure to the operator will:

• quadruple b. triple c.

double

• remain the same

• If at one foot from the radiation source

the intensity of exposure is 240 milliroentgens (mR) per hour and you remain at this location for 10 minutes, you will receive an exposure of 40 milliroentgens (mR). What would be you exposure if you moved 2 feet away from the radiation source and remained there for 20 minutes?

• 2 milliroentgens
• 4 milliroentgens
• 20 milliroentgens
• 80 milliroentgens

• You are fluoroscoping a patient using 80

kilovolt peak (k Vp) technique. At this kVp, the intensity of the x-ray beam at table top should not exceed how many roentgens per minute for each milliampere (mA) of current?

• 0.2 roentgens per minute
• 1.0 roentgens per minute
• 2.2 roentgens per minute
• 5.0 roentgens per minute

• The ability of the human eye to perceive

detail is called:

• visual acuity
• photopic vision
• vignetting
• integration

• The central portion of the image

intensified tube possesses the greatest

• detail
• abberation
• brightness
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