in an automatic film processing system, what is the main purpose of the developer?
A. clear away the unexposed undeveloped silver halide crystals
B. convert the exposed silver halide crystals into black metalic silver
C. Ensure the image is permanent
D. Harden the image to the base
convert the exposed silver halide crystals into black metallic silver
what structure is best seen using an open mouth, end on radiographic view?
A. zygomatic arch
B. nasal turbinates
C. pinnae
D. tympanic bullae
tympanic bullae
what anatomical part requires the lowest kilovolts peak (kVp) setting to produce a quality radiographic image?
A. Chest
B. abdomen
C. skull
D. pelvis
skull
if an image of optimal radiographic density was acquired using a traditional film screen system at 16 mAs and a source image distance (SID) of 100 cm, what mAs is required to produce the same density at a new distance of 50cm?
A. 8mAs
B. 32 mAs
C. 4 mAs
D. 2 mAs
4 mAs
mAs1/mAs2 =(SID2) sq: 16/x = 100 sq/ 50sq: x=(10,000)(x) = 40,000:
x= 40,000 / 10,000 = 4mAs
what procedural error is most likely to cause a long bone to appear foreshortened on a radiographic image?
A. the patient is not parallel to the image receptor
B. the x-ray beam is not perpendicular to the image receptor
C. the x-ray tube is too far from the image receptor
D. the part is too far from the image receptor
the part is not parallel to the image receptor
What best describes the main advantage of collimating the X-ray beam?
A. Less scattered radiation reaches the image receptor
B. more anatomy can be visualized
C. fewer repeat exposures are necessary
D. patients do not need to be manually restrained by the technician
less scatter radiation reaches the image receptor
A 9-year-old terrier is undergoing preoperative labs for dental extraction next week. The doctor requests a cystocentesis to collect a specimen for urinalysis. After palpating the abdomen, the tech feels that the bladder is rather small and difficult to locate. What should the tech do next?
A. take a radiograph to view the exact size and location of the bladder
B. Express the bladder and catch the urine in a sterile container
C. use the ultrasound machine to view the exact size of the bladder
D. Place a urinary catheter in the bladder and obtain the specimen
Use the ultrasound machine to view the exact size and location of the bladder
when restraining a patient for a radiograph, what piece of personal protective equipment should the vet tech wear?
A. goggles
B. mask
C. dosimeter
D. lab coat
dosimeter
what happens first when the exposure switch is depressed on an x-ray machine?
A. the film is heated and the rotor speed increases
B. the focal spot size is selected
C. the x-ray exposure is complete
D. electrons travel from the cathode to the anode
the filament is heated and the rotor speed increases
what is the minimum lead equivalent for protective aprons?
A. 0.4mm
B. 0.25mm
C. 0.5mm
D. 0.3mm
0.5mm
at what level should the x-ray beam be centered for a radiographic exam of the cervical spine?
A. C1 to C2
B. C5 to C6
C. C7 to T1
D. C3 to C4
c3 to c4
what items must be included in the radiography log book?
A. owners name, patient measurments, hospital adress
B. date, patient name, hospital phone number
C. date, patient name, patient age,
D. owners name, patients measurements and technical factors
owners name, patients measurements and technical factors
During what step of the automatic film processing are the unexposed silver halide crystals removed from the film base?
A. washing
B. developing
C. fixing
D. drying
fixing
an abdominal radiograph is obtained with a traditional film screen imaging system with a technique of 12 mAs at 68 kVp. the image appears too dark and a repeat image is requested at one half the density of the original image. What technique will produce this outcome?
A. 12 mAs and 34 kVp
B. 6 mAs and 68 kVp
C. 12 mAs and 68 kVp
D. 6 mAs and 34 kVp
6 mAs and 68 kVp
what is the best radiographic projection for obtaining images of the canine carpus?
A. palmodorsal
B. dorsopalmar
C. caudocranial
D. craniocaudal
dorsopalmar
which setting on the x-ray machine controls the penetrating power of the beam?
A. Miliamperage
B. Time
C. Focal spot size
D. kilovoltage peak
Kilovolts peak (kVp)
what is the annual effective dose limit for occupationally exposed workers?
A. 50 rad
B. 15 rad
C. 0.5 rem
D. 5 rem
5 rem
When performing a radiographic examination on an agitated puppy, which method of restraint is most effective for reducing patient motion while also decreasing radiation exposure to the worker?
A. chemical restraint
B. manual restraint with gaize ties
C. mechanical restraint with tape
D. manual restraint with gloves and apron
chemical restraint
When acquiring a lateral view of a small animal abdomen, what are the recommended borders of collimation?
A. manubrium sterni cranially and the greater trochanter caudally
B. second cervical vertebra cranially and the 5th thoracic vertebra caudally
C. the caudal aspect of T1 cranially and the greater trochanter caudally
the caudal aspect of T1 cranially and the greater trochanter caudally
