Europium-activated barium fluorohalide is associated with - ANSWER-PSP storage plates
The threat of bodily harm, with apparent ability to do so, is
... [Show More] termed - ANSWER-Assault
An acute reaction caused by ingestion or injection of a sensitizing agent describes - ANSWER-Anaphylaxis
As the CR laser scanner/reader recognizes the photostimulated luminescence (PSL) released by the PSP storage plate, it constructs a graphic representation of pixel value distribution called a - ANSWER-Histogram
An accurately positioned oblique position of the first through fourth lumbar vertebrae will demonstrate the classic "Scotty dog." What bony structure does the Scotty dog's neck represent? - ANSWER-Pars interarticularis
How is source-to-image distance (SID) related to exposure rate and receptor exposure? - ANSWER-As SID increases, exposure rate decreases and receptor exposure decreases.
What information must be included on an x-ray image for it to be considered as legitimate legal evidence? - ANSWER-1. Name of facility where examination performed
2. Examination date
The principal late effects of ionizing radiation on humans include - ANSWER-2. Genetic effects
3. Malignant disease
Which of the following procedures requires that contrast medium be injected into the ureters? - ANSWER-Retrograde pyelogram
What is the standard international unit of radiation exposure? - ANSWER-Gy a
Which of the following combinations would pose the least hazard to a particular anode? - ANSWER-1.2-mm focal spot, 85 kVp, 15 mAs
Coracoid process - ANSWER-Located in the shoulder girdle
Which of the following indicates the scapular notch seen in figure 6-3? - ANSWER-H
The CR should be directed to the center of the part of the greatest interest in order to avoid - ANSWER-Rotation distortion
Federal regulations regarding infection control in the workplace, as amended by the Occupational safety and health adminstration (OSHA), make which of the following requirements? - ANSWER-2. Puncture-proof containers must be provided for all used needles.
3. Follow-up care must be provided to any staff accidentally exposed to blood splash/needle stick.
Imperfect expansion of the lung(s), often accompanied by dyspnea, is called - ANSWER-Atelectasis
Which of the following radiologic examinations requires preparation consisting of a low-residue diet, cathartics, and enemas? - ANSWER-Barium enema (BE)
The exposure timer settings on three-phase radiographic equipment must be tested annually and must be accurate to within - ANSWER-+/-5%
Fluoroscopic equipment features designed to eliminate unnecessary radiation exposure to patients and/or personnel include - ANSWER-1. Protective curtain
2. Filtration
3. Collimation
Which of the following will best demonstrate the lumbosacral articulation in the AP position? - ANSWER-CR cephalad 30 to 35 degrees
The following projection(s) require(s) that the shoulder be placed in external rotation? - ANSWER-AP humerus
During endoscopic retrograde cholangiopancreatography (ERCP) examination, contrast medium is injected into the - ANSWER-Common bile duct
Which of the following is (are) well demonstrated in the oblique position of the cervical vertebrae? - ANSWER-Pedicles
Which of the following is most likely to produce a high-quality image? - ANSWER-High signal-to-noise ratio (SNR)
A decrease from 90 to 77 kVp in SF/analog imaging will result in a decrease in which of the following? - ANSWER-2. Scale of grays
3. Optical density
The term that refers to size distortion include - ANSWER-Magnification
Advantages of high-frequency generators include - ANSWER-1. Small size
2. Decrease patient dose
3. Nearly constant potential
Biologic matter is most sensitive to radiation exposure under which of the following conditions? - ANSWER-Oxygenated
Which of the following is the preferred scheduling sequence? - ANSWER-Abdomen ultrasound, lower GI series, upper GI series
The RAO position is used to project the sternum to the left of the thoracic vertebrae in order to take advantage of - ANSWER-Heart shadow
As window level decreases - ANSWER-Brightness decreases
The AP axial projections of the chest for pulmonary apices - ANSWER-2. Requires 15 to 20 degrees of cephalad angulation
3. Should demonstrate the medial ends of the clavicles equidistant from the vertebral column
Rapid onset of severe respiratory or cardiovascular symptoms after ingestion or injection of a drug, vaccine, contrast agent, or food or after an insect bite describes - ANSWER-Anaphylaxis
The following is/are used to indicate the appropriateness of radiation intensity reaching the IR - ANSWER-1. Exposure index
2. Sensitivity (S) number
Which of the following is most useful for bone age evaluation? - ANSWER-PA hand
What lies immediately under the phosphor layer of a PSP storage plate - ANSWER-Reflective layer
Body substances and fluids that are considered infectious or potentially infectious include - ANSWER-1. Sputum
2. Synovial fluid
3. Cerebrospinal fluid
The National Council on Radiation Protection and Measurements (NCRP) had recommended what total equivalent dose limit to the embryo/fetus? - ANSWER-5.0 mSv
Fluids and medications are administered to patients intravenously for which of the following reasons? - ANSWER-1. To promote rapid response
2. To administer parental nutrition
Which of the following is (are) tested as part of a QC program? - ANSWER-1. Beam alignment
2. Reproducibility
3. Linearity
The line-focus principle refers to the fact that - ANSWER-The actual focal spot is larger that the effective focal spot
Which of following positions will move the fundus of the gallbladder away from the superimposed transverse process? - ANSWER-LAO
Which of the following effects does an analgesic have on the body? - ANSWER-Decreases pain
The roentgen, as a unit of measurement, expresses - ANSWER-Exposure in air
Histogram appearance can be skewed is there is inaccuracy in - ANSWER-1. Part centering
2. Part positioning
3. Processing algorithm selection
Bone densitometry is often performed to - ANSWER-1. Measure degree of bone (de)mineralization
2. Evaluate results of osteoporosis treatment/therapy
Indirect modes of disease transmission include - ANSWER-1. Vector
2. Fomite
3. Airborne
If a part received 0.8 rad during a 4-minute fluoroscopic examination, what was the dose rate? - ANSWER-200 mrad/min
An increase from 78 to 92 kVp will result in a decrease in which of the following? - ANSWER-Wavelength
In the 45-degree medial oblique projection of the ankle, the - ANSWER-2. Tibiofibular joint is visualized
3. Plantar surface should be perpendicular to the lower leg
Major effect(s) of irradiation of macromolecules include(s) - ANSWER-1. Point lesions
2. Cross-linking
3. Main-chain scission
Cells described as somatic include - ANSWER-2. Neuron
3. Muscle
An animal host of an infectious organism that transmits the infection via a bite or sting is a - ANSWER-Vector
If the exposure rate at 2.0 m from a source of radiation is 18 mR/min, what will be the exposure rate at 5 m from the source? - ANSWER-2.8 mR/min
Methods of decreasing patient dose during fluoroscopic examinations and include - ANSWER-1. Use of last image hold
2. Using the lowest practical pulse rate
3. Keeping the patient/part as close to the image intensifier as possible
An axial projection of the clavicle is often helpful in demonstrating a fracture that is not visualized using a perpendicular CR. When examining the clavicle in the PA position, how is the CR directed for the axial projection? - ANSWER-Caudad
An exposure was made using 600 mA, 0.04-s exposure, and 85 kVp. Each of the following changes will serve to decrease the receptor exposure by one-half except a change to - ANSWER-18 mAs
All the following are rules of good body mechanics except - ANSWER-Keep the load away from the body
Which of the following is (are) accurate positioning or evaluation criteria for an AP projection of the normal knee? - ANSWER-1. Femorotibial interspaces equal bilaterally
The source-to-table distance in fixed/stationary fluoroscopy must - ANSWER-Be at least 15 inches
Each of the following statements regarding respiratory structures is true except - ANSWER-Each lung is enclosed in peritoneum
Which of the following artifacts is occasionally associated with the use of grids in digital imaging? - ANSWER-Aliasing
Images useful in demonstrating postspinal fusion degree of motion include - ANSWER-2. Lateral flexion and extension
3. AP right and left bending
A blowout fracture usually occurs in which aspect of the orbital wall? - ANSWER-Inferior
Which of the following projections/positions would best demonstrate the radial head? - ANSWER-AP external oblique
The condition in which pulmonary alveoli lose their elasticity and become permanently inflated, causing the patient to consciously exhale, is - ANSWER-Emphysema
Tungsten alloy is the usual [Show Less]