Patient exposure can be substantially reduced by

Use of proper body or part immobilization  Motion reduction techniques  Appropriate beam limitation devices  Adequate filtration of the x-ray beam  Use of gonadal or other specific area shielding

Communication between the radiographer and patient is effective when

Verbal messages are understood as intended. • Nonverbal messages (unconscious actions or body language) are understood as intended.

Consequence of blurred image

 Examination needs to be repeated.  Results in additional radiation exposur

Types of patient motion

Voluntary motion  Involuntary motion

Every diagnostic imaging system must have a

Protective tube housing  Correctly functioning control panel

Primary x-ray beam shall be

adequately collimated so that it is no larger than the size of the IR being used for the examination.

Light-localizing variable-aperture rectangular collimators

 Construction  Reduction of off-focus radiation  Skin sparing  Luminance  Coincidence between the radiographic beam and the localizing light beam  Positive beam limitation (PBL

is the “amount of luminance (light emission) of a display monitor.

made of amorphous silicon, converts x-ray energy into visible light

made of amorphous selenium, converts x-ray energy directly into electrical signals that are read by transistors.

CR has greater kilovoltage flexibility than does conventional screen-film radiography.

Digital Radiography (DR)

Lower doses  Greater ease of use and faster patient throughput  Immediate imaging results  Additional image manipulation  Less overall maintenance

Significantly decreases patient dose, especially in long procedures  Extends tube life

Limiting fluoroscopic field size

Benefit of fluoroscopic field size limitation  Fluoroscopic beam length and width limitation

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Study Stack Exam Rev

Study Stack Exam Review

Question	Answer
Patient exposure can be substantially reduced by	Use of proper body or part immobilization  Motion reduction techniques  Appropriate beam limitation devices  Adequate filtration of the x-ray beam  Use of gonadal or other specific area shielding
Communication between the radiographer and patient is effective when	Verbal messages are understood as intended. • Nonverbal messages (unconscious actions or body language) are understood as intended.
Consequence of blurred image	 Examination needs to be repeated.  Results in additional radiation exposur
Types of patient motion	Voluntary motion  Involuntary motion
Every diagnostic imaging system must have a	Protective tube housing  Correctly functioning control panel
Measures must be taken to ensure that radiographic equipment operates safely to protect	Patients  All personnel
Primary x-ray beam shall be	adequately collimated so that it is no larger than the size of the IR being used for the examination.
Light-localizing variable-aperture rectangular collimators	 Construction  Reduction of off-focus radiation  Skin sparing  Luminance  Coincidence between the radiographic beam and the localizing light beam  Positive beam limitation (PBL
Types of filtration	 Inherent  Added
Brightness	is the “amount of luminance (light emission) of a display monitor.
Scintillator	made of amorphous silicon, converts x-ray energy into visible light
Photoconductor	made of amorphous selenium, converts x-ray energy directly into electrical signals that are read by transistors.
Kilovoltage	CR has greater kilovoltage flexibility than does conventional screen-film radiography.
Digital Radiography (DR)	Lower doses  Greater ease of use and faster patient throughput  Immediate imaging results  Additional image manipulation  Less overall maintenance
Pulsed fluoroscopy	Significantly decreases patient dose, especially in long procedures  Extends tube life
Limiting fluoroscopic field size	Benefit of fluoroscopic field size limitation  Fluoroscopic beam length and width limitation

Created by: robertye12

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