What is used to adjust the size and shape of the x-ray beam either automatically or manually?

Light-localizing variable-aperture rectangular collimator

Define Positive beam limitation (PBL)

Collimation is adequate by collimating the radiographic beam so that it is no larger than the IR

Define Half-value layer (HVL)

The thickness of a designated absorber required to decrease the intensity of the primary beam by 50% of its initial value.

How does holistic patient care begin?

It starts with effective communication between the radiographer and patient.

What is the difference between verbal and non verbal communication?

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

Whenever possible, what are the following areas of the body should be selectively shielded from the useful beam?

• Lens of the eye • Breasts • Reproductive organs • Thyroid gland

What is the CARES committee?

created to educate the profession regarding the AAPM gonadal shielding position statement.

Define Air Gap Technique.

As an alternative procedure instead of using a radiographic grid for reducing scattered radiation during certain examinations

What are the possible consequences of not using filtration during a diagnostic x-ray exam?

low-energy photons would interact with the patient’s body, increasing scatter that could possibly cause an increase in the radiographer’s EqD

What are the various thickness of lead aprons?

0.25 (minimum), 0.5 (standard), and 1 mm.

What is the embryo-fetus dose limits for pregnant personnel?

0.5 mSv or a limit of 5.0 mSv during the entire pregnancy

Define Inverse Square Law (ISL)

The intensity of radiation is inversely proportional to the square of the distance from the source

Where should the radiographer stand during a mobile radiographic procedure?

stand at a right angle (90 degrees) to the x-ray beam-scattering object (the patient) line.

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RAD 201 exam 3

Question	Answer
What is the dose rate at which the tube housing prevent leakage radiation from exceeding ?	0.88 mGy/hr
What percentage distance and centering do indicators must be accurate within SID?	2% and 1%
What is used to adjust the size and shape of the x-ray beam either automatically or manually?	Light-localizing variable-aperture rectangular collimator
Define Positive beam limitation (PBL)	Collimation is adequate by collimating the radiographic beam so that it is no larger than the IR
Define Half-value layer (HVL)	The thickness of a designated absorber required to decrease the intensity of the primary beam by 50% of its initial value.
How does holistic patient care begin?	It starts with effective communication between the radiographer and patient.
What is the difference between verbal and non verbal communication?	• Verbal messages are understood as intended. • Nonverbal messages (unconscious actions or body language) are understood as intended
Whenever possible, what are the following areas of the body should be selectively shielded from the useful beam?	• Lens of the eye • Breasts • Reproductive organs • Thyroid gland
What is the CARES committee?	created to educate the profession regarding the AAPM gonadal shielding position statement.
Define Air Gap Technique.	As an alternative procedure instead of using a radiographic grid for reducing scattered radiation during certain examinations
What are the possible consequences of not using filtration during a diagnostic x-ray exam?	low-energy photons would interact with the patient’s body, increasing scatter that could possibly cause an increase in the radiographer’s EqD
What are the various thickness of lead aprons?	0.25 (minimum), 0.5 (standard), and 1 mm.
What is the embryo-fetus dose limits for pregnant personnel?	0.5 mSv or a limit of 5.0 mSv during the entire pregnancy
Define Inverse Square Law (ISL)	The intensity of radiation is inversely proportional to the square of the distance from the source
Where should the radiographer stand during a mobile radiographic procedure?	stand at a right angle (90 degrees) to the x-ray beam-scattering object (the patient) line.

Created by: Aaliyah602

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