onlineradreview Word Scramble

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Question	Answer
What pixel size has a 1024 × 1024 matrix with a 35-cm FOV?	0.35 mm
How does the use of rare earth intensifying screens contribute to lowering the patient dose?	It permits the use of lower mAs
Advantages of battery-powered mobile x-ray units include their	1. ability to store a large quantity of energy. 2. ability to store energy for extended periods of time
Which of the following is (are) method(s) that would enable the radiographer to reduce the exposure time required for a particular radiograph?	1. Use higher mA. 2. Use higher kVp. 3. Use faster film-screen combination.
In the 15 degree medial oblique projection of the ankle the	talotibial joint is visualized and plantar surface should be vertical
As the CR laser scanner recognizes various tissue densities, it constructs a graphic representation of a pixel value distibution called a	histogram
An AEC device can operate on which of the following principals	A photomultiplier tube charged by a fluorescent screen and a parallel plate ionization chamber charged by x-ray photons
An accurately positioned oblique projection of the first through fourth lumbar vertebrae will demonstrate the classic "scotty dog" what bony structure does the scotty dog's neck represent	Pars interarticularis
which of the following barium-filled anatomic structures is best demonstrated in the left anterior oblique position	Splenic flexure
which dose-response curve charfacteristics represent genetic and some somatic responses to radiation	linar and non threshold
What procedures requires that contrast medium be injected into the ureters	retrograde pyelogram
How can the radiographic reduce the amount of scattered ratiation generated during an x-ray	use optimum kVp and collimate closely
Minor reactions to IV administration of a contrast agent can include	hives, nausea, flushed face
the presence of dust or scratched on intensifying screens will cause	decreased density in those area of the images
Which interaction between x-ray photons and matter results in total absorption of the incident photon	Photoelectric effect
what is the preffered scheduling sequence for Ab ultrasoun, upper Gi, lower Gi	Abdomen ultrasound, lower GI, Upper GI
How would the introduction of a 6-inch OID affect image contrast	Contrast would be increased
If a pt is unable to stay erect for sinus study what position is best	Lateral cross table recumbant
For the right anterior oblique of the cervical spine requires which of the following combinations of tube angle and direction	15 to 20 caudad
NCRP recommended fetal dose is	.5 rem
fluids and medications are administered to patients intravenously to	promote rapid responses and administer parenternal nutrition
Which position will move the fundus of gallbladder away from the superimposed transverese process	LAO
Examples of primary radiation barriers include	radographic room walls and radiographic room floor
Indirect modes of disease transmission include	airborne, fomite, vector
Is each lung enclosed in peritoneum	this is false
The total number of x=ray photons produced at the target is contingent upon the	tube current, target material, and square kilovoltage
What will reduce patient dose during fluoro	Decreased SSD and restricting tabletop intensity to less than 10 R/min
Expectoration of blood is	hemoptysis
Accurate postion of an AP knee is	femorotibial interspaces equal bilatterally and CR enters 1/2 in distal to base of patella
Which structure will usually contain air in the PA position on a sthenic patientin a double-contrast UGI	Gastric fundus
If the quantitiy of black metallic silver on a particular radiograph is such that it allows 1% of the illuminator light to pass through tthe image that image has a density of	2.0
A blowout fracture usually occures in which aspect of the orbital all	Inferior
Gonadal shielding should be procided for male patients in which of the following exams Femur, abdomen, or pelvis	For all...Femur, abdomen, and pelvis
The image intensifier's input phosphor differs from the output phosphor in that the input phosphor	it is much larger than the output phosphor
Which of the following pathologic conditions require a decrease in exposure factors Pneumothorax, Emphysema, Multiple myeloma	Pnuemothorax, Emphysema, Multiple myeloma
What projections require that the shoulder be placed in external rotation	AP humerus
In which section of the automatic processor are the exposed silver halide crystals changed to black metallic silver	In the first bath...the developer
Geometric unsharpness is influenced by	OID,SID,SOD
Combinations of MA and S that produce a particular mAs will produce identical radiographic density...this is an expression of	Reciprocity Law
If single-emulsion film was loaded into it's cassette with the emulsion facing away from the intensifying screen the resulting image would demonstrate	decreased density
What is demonstrated in the oblique cervical vertebrae	only intervertebral foramina
when medications are administered parenterally they are given	by any other route other than orally
A star pattern is used to measure	only focal spot resolution
All other factors remaining the same, if a 14 x 17 inch field is collimated to a 4 inch square field the image will demonstrate	less density
Compontent parts of the x-ray film include	Gelatin emulsion and adhesive layer
In what ways can higher radiographic contrast be obtained in abdominal radiography	by using lover KV, by using a contrast medium, by limiting field sized
In the AP projection of an asthenic patient whose knee measures less than 19 cm form the ASIS to tabletop, the CR should be directed	5 degrees caudad
What can be used as landmark for an AP projection of the hip	Two inch medial to ASIS and Prominence of the greater trochanter
Unlawful touching of a person without his or her consent is	battery
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
A controlled area is one that is occupied by	radiation workers
The process of radiation passing through tissue and depositing energy through ionization process is known as	Linear Energy Transfer
What percentage of the SID must the collimator ligh and actual irrradiated area be accurate	2%
The brightness level of fluoro image can vary with	Millamperage, KV, and patient thickness
What methods can be effectively used to decrease differential absorption, providing a longer scale of contrast to the diagnostic range	using high kV p and low mAs factors and using a compensating filtration
Which of the following pathologic consitions are considered additive conditions with respect to exposure factors...Osetoma, brochiectasis, or Pneumonia	Osteoma, Brochiectasis, and Pneumonia
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
The thumb joint is	diathrotic
Which of the following can affect radiographic contrast ? Processing, Pathology, OID	processing, pathology, and OID
What is the most superior structure of the scapula?	Acromin Process
Which of the following contibutes to base-plus fog?	Chemical fog, base tint, and background radiation
The roentgen is a unit of measurement expresses	exposure in air
Which reducing agent is responsible for producing the gray tones on the image	Phenidone
What cells has the greatest radiosensitivity	Lymphocytes
A lesion with a stalk projecting from the intestinal mucosa into the lumen is a	polyp
What is the minmum requirement for lead aprons	.25 Pb
Stocastic effects of radiation include	genetic alterations
Which of the following are located on the distal aspect of the humerus..Capitulum, intertubercular groove, coronoid fossa	Capitulum and Coronoid Fossa
What is demonstrated in the AP projection of the T-spine	Intervertebral spaces
Is film screen contact related to recorded detail	No
What is the annual TEDE limit for radiation workers	5000 mrem
A radiographer who discloses confidential information to unauthorized individuals may be found guilty of	Invasion of Privacy
Focal spot blur is greates	toward the cathode end of the x-ray beam
The biggest advantage of coupling the II to the TV camera or CCD via a lens coupling device is	ability to accommodate cine and or/spot films
The secondary ossification in long bones is	epiphysis
What structures are located in the left upper quadrant	left kidney, left superarenal gland, and gastric fundus
How is SID related to exposure rate and radiographic density	As SID increases exposure rate decreases and radiographic density decreases
What contributes most to patient dose	Photoelectric effect
An animal host of an infectious organism that transmit the infection via bite is a	vector
What affects both quantity and quality of beam	HVL and KVP
What is the best projection to demonstrate the longitudinal arch of the foot	Lateromedial weight-bearing lateral
A focal spot size of 0.3 mm or smaller is essential for what procedures	Magnification radiography
The principal function of filtration of the x-ray tube is to reduce	patient skin dose
Which of the following shoulder projections can be used to evaluate the lesser tubercle in profile	Internal rotation position
What is essential in magnification radiography	fractional focal spot
What type of error results in grid cutoff at the periphery of the image	Off-focus
What are the differences between the male and female pelvis	the female pelvic outlet is wider and the pubic angle is 90 degrees or less in the male
The advantages of large format spot film cameras, such as 100mm and 105mm, over smaller format cameras, such as 70 mm and 90 mm include	improved image qualities
mA x time x kVp x 1.41 is the heat unit formula for	3phase 12 pulse
What type of exposure factors do Edema, Adcites, Acromegaly	Increase in exposure factors
When performing CPR on an infant, it is required that the number of compressions per minute, compared to that for an adult	Increase
Forms of intentional misconduct	Slader and invasion of privacy
All drug packages must provide certain information required by the U.S. FDA, some of the information that must be provided includes	Generic name, contraindications, the usual dose
Examples of nasograstric tubes include	Salem-sump and Levin
In which position can the sesamoid bones of the foot be demonstrated free of superimposition with the metatarssals or phalanges	tangential metatarsals/tose
Which structure should be visualized through the foramen magnum in the AP axial projection (Grashey method) of of the skull for the occipital bone?	Posterior clinoid processes and dorsum sella
Angulation of the CR may be required	to avoid superimposition of overlaying structures, to avoid foreshortening or self-superimposition, to project through certain articulations
To obtain an AP projection of the right ilium the patients	left side is elevated 40 degrees
Todemonstrate esophageal varisces the patient must be examined in	the recumbent position
What are the criteria used to evaluate a PA projection of the chest	10 posterior ribs should be visualized, SC joint symmetrical, the scapulae should be lateral to the lung fields
What is true about lower-extremity venography	The patient is often examined in the semierect position, contrast medium is injection through a vein in the foot
To better demonstrate mandibular rami in the PA position the	central ray is angled cephalad
Examples of synovial pivot articulations include	atlantoaxial joint and radioulnar joint
the ridge that marks the bifurcation of the trachea into the right and left primary bronchi is the	Carina
What is true about parietoacanthial (waters method) of the skull	head is rested on the extended chin and the maxillary antra should be projected above the petros
Skeletal consitions characterized by faulty bone calcification include	osteomalaci and rickets
What postion may not be used to demonstrate the SC articulations	Weight bearing
What is important for patient protection during fluoroscopic procedures	intermittent fluoro, fluoroscopic field size, focus-to-table distance
Patient dose increases as	FOV decreases
What is the approcimate ESE for the average AP c-spine	80 mrad
Sources of secondary radiation include	leakage radiation, scattered radiation
Diagnostic x-radiation may be correctly described as	low energy, low LET
What circuit device is not located between the incoming power supplyand the primary coil of the high -voltage transformer except	mA meter
The x-ray interaction with matter that is responsible for the majority of scattered radiation reaching the IR is	Compton scatter
Exposures less than the minmum response time of an AEC may be required when	using high m, using fast film-screen combinations
Congruence of the x-ray beam with the light field is tested using	Radiopaque objects
A quality control program includes check on what	Reproducibility, Linearity, Positive beam limitation.auto collimation
What is the cause of pitting, or many small surface melts, of the anode's focal track	repeated, frequent overloading
In Fluoroscopy, the automatic brightness control adjusts the	kVp and mA
The fact that x-ray intensity across the primary beam can vary as much as 45% describes the	anode heel effect
the advantages of capacitor discharge mobile x-ray equiptment include	compact size and light weight
A technique chart should include which of the following information	Recommended SID, Grid Ratio, Screen-film combination
Substituting intensifying screens having a speed of 200 in place of a 100 speed system will	require one halg of the exposure of 100 speed screens and enable the radiographer to decrease the exposure time
Radiolucent contast agent	causes anatolmy to appear dark on the radiograph and is composed of elements with low atomic numbers
Geometric unsharpness is most likely to be greater	at the cathode end of the image
the infection strep throat is caused by	bacterium
In the parieto-orbital projection(Rhese method) of the optic canal the median sagittal place and CR form what angle?	37 degrees
The absoption of useful radiation by a grid is called	grid cutoff
Decreasing field size from 14 x 17 into 8 X 10 will	decrease density and decrease the amount of scattered radiation within the part
How is the mAs adjusted in an AEC system as the film-screen speed combination is decreased	the mAs remains unchaed as film-screen speed decreases
Indirect modes of disease transmission include	airborne, fomite and vector
the principal function of filtration in the tube is to reduce	patient skin dose
the advantages of large format spot film cameras, such as 100 mm and 105 mm, over smaller format cameras such as 70 mm and 90 mm are	improved image quality
Techniques that function to reduce the spread of microbes are termed	medical asepsis
What will have an effect on radiographic contrast	beam restriction and grids
In the 15 degree medial oblique projection of the ankle the	talotibial joint is visualized and the plantar surface should be vertical

Created by: eslater1