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41 terms

4th mock final missed questions

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The continued emission of light by a phosphor after the activating source has ceased is termed
phosphorescence
A test tool that demonstrates line pairs per millimeter is used to express
intensifying screen resolution
The term spectral matching refers to the fact that film sensitivity must be matched with the
proper color screen fluorescence
The anatomic organ used for phonation is called the
larynx
When the Waters projection is done for the nasal area, the central ray exits through the
acanthion
The suture that separates the frontal bones from the parietal bones is called the
coronal
In the posterior oblique position of the cervical spine, the central ray should be directed
15 degrees cephalad to C4
The Caldwell projection of the skull requires that the central ray be angled
15-20 degrees caudad
The perpendicular plate is located within which bone?
Ethmoid
The device that converts electrical energy into mechanical energy is called
motor
Which interaction between x-ray photons and matter results in total absorption of the incident photon
Photoelectric effect
All of the following are related to recorded detail except
grid ratio
A small bottle containing several doses of medication is termed
vial
Protective gloves worn during fluoroscopic procedures should be lined with a minimum lead equivalent of
0.25mm Pb
All other factors remaining the same, if a 14 × 17-inch field is collimated to a 4-inch square field, the radiographic image will demonstrate
less density
What is the name of the device that functions to expose a film with an optical step wedge having a number of densities ranging from white to black
Sensitometer
Focal spot blur is greatest
toward the cathode end of the x-ray beam
Which of the following barium-filled anatomic structures is best demonstrated in the left anterior oblique (LAO) position
Splenic flexure
Which part of the rib articulates with the transverse process of the thoracic vertebrae
tubercle
The steeper the straight line portion of a characteristic curve for a particular film, the
1. slower the film speed
2. higher the film contrast
3. grater the exposure latitude
higher the film contrast
Examination of the following body parts is done using a low kVp:
1. gall bladder
2. kidneys
3. small bowel
gall bladder & kidneys
The articulation of the sagittal and coronal suture is the
bregma
Orthostatic hypotention is
a decrease of BP upon standing
The petrous ridge is located at the same level as the
top of ear attachment
If single-emulsion film was loaded into its cassette with the emulsion facing away from the intensifying screen, the resulting image would demonstrate
decreased density
How is SID related to exposure rate and radiographic density
As SID increases, exposure rate decreases and radiographic density decreases
Which of the following techniques is used to evaluate the dynamics of a part
fluoroscopy
An unexposed and processed film will have a density of about
0.1
In a modern image intensifier, what purpose does the photocathode serve
converts light photons to electrons
How many pulses per cycle are found in a single phase, full wave rectified X-ray machine
2
Which type of error results in grid cutoff at the periphery of the radiographic image
Off-focus
The RPO position for radiography of the ribs will demonstrate an injury along the
right margin
Compared to that of the hyposthenic and asthenic habitus types, the gallbladder of a hypersthenic patient is most likely to be located
higher and more lateral
What term describes effects that become evident in the descendants of irradiated individuals
genetic
Which of the following may have an effect on patient-exposure dose?
1. Milliamperage seconds
2. filtration
3. beam restriction
Milliamperage seconds, filtration, beam restriction
Which of the following is (are) well demonstrated in the oblique position of the cervical vertebrae?

1) Intervertebral foramina
2) Disk spaces
3) Apophyseal joints
Intervertebral foramina
The most common method of designating screen speed is
relative speed (par)
The right anterior oblique of the cervical spine requires which of the following combinations of tube angle and direction
15° to 20° caudad
Which of the following conditions is often the result of ureteral obstruction or stricture
Hydronephrosis
Which of the following is a necessary criterion for demonstrating the intercondyloid fossa
The central ray should be directed perpendicular to the lower leg
The average pulse rate (beats/minute) for a normal adult is usually between
60-90