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RADT 465 Safety

ARRT registry review covering safety

QuestionAnswer
The uppermost collimator shutter functions to eliminate Off-focus radiation (Lange Q&A p.113)
Somatic effects of radiation refer to effects that are manifested During the life of the exposed individual (Lange Q&A p.113)
Increasing field size, while leaving technical facts unchanged, will Increase the DAP (Lange Q&A p.114)
How are kV and HVL related? Directly (Lange Q&A p.114)
Diagnostic x-radiations are correctly described as A low energy, low LET (Lange Q&A p.114)
A thermoluminescent dosimetry system uses which crystal? Lithium fluoride (Lange Q&A p.115)
The degree of x-ray attenuation is directly related to what quality of the radiographed part? Atomic number (Lange Q&A p.115)
An increase in total filtration of the x-ray beam will increase what? Beam HVL (Lange Q&A p.115)
What is the minimum lead requirement for lead, aprons, according to the NCRP? 0.05mm Pb equivalent (Lange Q&A p.116)
Any wall that the useful x-ray beam may be directed toward must be a Primary barrier (Lange Q&A p.116)
The annual dose limit for occupational exposed individuals is valid for Beta, x-, and gamma radiations (Lange Q&A p.116)
The skin response to radiation exposure that appears as hair loss is known as Epilation (Lange Q&A p.117)
What unit of measure is used to express ionizing radiation dose to biological material Sv (Lange Q&A p.117)
The reduction in the intensity of an x-ray beam as it passes through material is termed what? Attenuation (Lange Q&A p.117)
Late effects of radiation, whose incidence is dose related and for which there is no threshold dose, are called Stochastic/probabilistic (Lange Q&A p.117)
The largest amount of diagnostic x-ray absorption is most likely to occur in which tissues Bone (Lange Q&A p.118)
In the production of characteristic radiation at the tungsten target, the incident electron does what? Ejects an inner-shell tungsten electron (Lange Q&A p.118)
Primary radiation barriers must be at least how high? 7 feet (Lange Q&A p.118)
According to the NCRP, the annual occupational dose-equivalent limit to the thyroid, skin, and extremities is 500 mSv (Lange Q&A p.119)
The NCRP recommends an annual effective occupational whole-body dose-equivalent limit of 50 mSv (Lange Q&A p.119)
The amount of time that x-rays are being produced and directed toward a particular wall is called the Use factor (Lange Q&A p.119)
Which cell type has the greatest radiosensitivity in the adult human? Lymphocytes (Lange Q&A p.119)
The unit of measurement used to express occupational exposure is Sv (Lange Q&A p.120)
The most effective type of shield for anterior and lateral male gonadal protection during fluoroscopy? Shaped contact (contour) (Lange Q&A p.120)
Isotopes are atoms that have the same Atomic number but a different mass number (Lange Q&A p.120)
Primary radiation barriers usually require which thickness of lead shielding? 1/16 inch lead equivalent (Lange Q&A p.121)
The SSD in mobile fluoroscopy must be A minimum of 30 cm (Lange Q&A p.121)
What is the automatic exposure device that is located immediately under the x-ray table is the Ionization chamber (Lange Q&A p.121)
What is the effect on RBE as LET increase? As LET increases, RBE increases (Lange Q&A p.121)
The photoelectric effect is an interaction between an x-ray photon and An inner-shell electron (Lange Q&A p.122)
In the production of Bremsstrahlung radiation The incident electron is deflected, with resulting energy loss (Lange Q&A p.122)
The purpose of filters in a film badge is To measure radiation quality (Lange Q&A p.122)
Aluminum filtration has its greatest effect on Low-energy x-ray photons (Lange Q&A p.123)
As field size decreases DAP decreases (Lange Q&A p.123)
The least radiosensative stage of human cell mitosis is S (Lange Q&A p.125)
The term used to express kinetic energy released in matter is Kerma (Lange Q&A p.125)
The dose of radiation that will cause a noticeable skin reaction is called the SED (Lange Q&A p.126)
Which type of monitoring device does photons release electrons by their interaction. with air? Pocket dosimeter (Lange Q&A p.126)
The primary function of filtration is to reduce Patient skin dose (Lange Q&A p.127)
What quantity of radiation exposure to the reproductive organs is required to cause temporary infertility? 1Gy (Lange Q&A p.127)
The deviation index (DI) indicates exposure data To the IR (Lange Q&A p.128)
Which personnel radiation monitors uses bluetooth technology? DIs (Lange Q&A p.127)
Radiation output from a diagnostic x-ray tube is measured in which of the following units of measurement? Air kerma (Lange Q&A p.129)
What percentage of the SID must the collimator light and actual irradiated area be accurate? 2% (Lange Q&A p.129)
The target theory applies to DNA molecule (Lange Q&A p.129)
The interaction between ionizing radiation and the target molecule that is most likely to occur is the Indirect effect (Lange Q&A p.130)
The most radiosensative portion of the GI tract is the Small bowel (Lange Q&A p.130)
The production of x-ray photons by the sudden deceleration of high-speed electrons is termed Bremsstrahlung (Lange Q&A p.131)
The dose area product (DAP) meter is generally placed Below the collimators (Lange Q&A p.131)
The required thickness of a primary barrier is usually expressed as 1.6mm (1/16 inch) Pb (Lange Q&A p.131)
The protective curtain used during fluoroscopic procedures must have a lead equivalent of at least what thickness? 0.25mm (Lange Q&A p.123)
How is effective dose calculated? Efd=WrxWtxD (Lange Q&A p.132)
How are wavelength and energy related? Inversely (Lange Q&A p.132)
What is the established monthly fetal dose-limit guideline for pregnant radiographers? 0.5mSv (Lange Q&A p.133)
Created by: 18Fieldsms
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