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Details

Merrill's Chapter 1
Preliminary Steps in Radiography
22
Health Care
Undergraduate 3
09/12/2011

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Cards

Term
Ethics
Definition
Profession’s moral responsibility and the science of appropriate conduct toward others. Code for radiography developed by the ASRT.
Term
Image Receptor
Definition
Device that receives the energy of the x-ray beam and forms the image of the body part
Term
Types of Image Receptors (5)
Definition
Cassette with film
Image plate
Solid-state detectors
Portable digital radiography
Fluoroscopic screen
Term
Computed radiography (CR) uses ___________.
Definition
Image Plate (Cassette w/ no film)
Term
Digital radiography (DR) uses _____________.
Definition
Solid State Detector (no cassettes)
Term
Radiographs are generally viewed with the patient in ___________________.
Definition
Anatomic Position (What about extremities? Other exceptions?)
Term
Anatomic Position
Definition
Standing erect w/ face & eyes directed forward, arms extended by the sides, palms forward, heels together, & toes pointed anteriorly
Term
3 Types of Motion (How would you control each type?)
Definition
Involuntary
Voluntary
Equipment
Term
Causes of involuntary motion
Definition
Causes
Heartbeat
Chills
Peristalsis
Tremor
Spasm
Pain
Term
What the best way to control involuntary motion?
Definition
Causes
Heartbeat
Chills
Peristalsis
Tremor
Spasm
Pain
Primary control: Use short exposure time
Term
Causes of voluntary motion
Definition
Nervousness
Discomfort
Excitability
Mental illness
Fear
Age
Breathing
Term
Ways to control voluntary motion
Definition
Giving clear instructions
Providing patient comfort
Adjusting support devices
Applying immobilization
Decreasing exposure time
Term
Required info on a radiograph
Definition
Date
Patient’s name or ID number
Right or left side marker
Institution identity
Term
Annotating markers digitally is ___________ legally acceptable
Definition
NOT
Term
Central Ray (CR)
Definition
Central or primary beam of x-rays
Term
Source to Image Receptor Distance
Definition
SID

Distance from the anode inside the x-ray tube (source) to the IR
Abbreviated SID
Critical technical component because it affects
Magnification
Recorded detail
Patient dose
Term
Longer SID
Definition
reduces magnification and increases recorded detail
Term
Collimators
Definition
Limit and adjust the size of the x-ray field
Term
How does collimation affect dose?
Definition
Reduces dose
Term
How does collimation affect contrast?
Definition
Increases contrast
Term
How does collimation effect scatter?
Definition
Decreases Scatter
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