Test your basic knowledge |

Radiology 2

Subjects : health-sciences, radiology

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is the purpose of replenishing the developer solution
Insufficient vertical angulation
Perpendicular to the film - parallel to the bite portion of the stabe
Patient positioning
Maintain acidity & alkalinity & prevent oxidation -

2. you change from an 8 inch to an 16 inch focal film distance. How is the intensity of the beam affected
Take FMS on all new patients; recall adults with no sig. med. history only require BW and PA - if indicated
Cosmic - naturally occuring radiation from earth - radiation for radioactive materials
1/4 as intense
.25 mm

3. What causes missing crowns
Mand canal - external oblique ridge - beg. of ramus
Doesn't matter
Excessive vertical angulation
Large blank space is due to reversed image error or chemical contamination - missing apices is due to inadequate VA

4. What would cause a film to be too dark
Overexposure -overdevelopment -developer is too strong -not enough fixation -exposure to white light -improper safelighting
nasal septum - ant. nasal spine - nasal fossa - median palatine suture - incisive foramen
KVp
X-rays hit phosphor screen creating florescent light that exposes the film

5. your film badge report sHows that you have received a small amt. of radiation. What should you do
Mand occlusal
8-16 inches
Stop taking xrays and evaluate all equipment and techniques to ensure safety
decrease mA & time

6. What causes missing apices
Occlusal
As low as reasonably achievable
Insufficient vertical angulation
Vertical BW

7. How are stabe film holders sterilized b/w uses
Sterilize film holder devices or discard disposable image receptor holding devices
Only when necessary to help the dentist diagnose and treat oral diseases; elective xrays should be postponed until after delivery
Insufficient or improper washing
Dentin - enamel - bone

8. What is the earliest sign of radiation exposure
Excessive VA w/ PID positioned too steep enough away from zero degrees
Vertical BW
Aka general radiation; stopping or slowing of the electrons of the cathode stream as they collide with the nuclei of the target atoms
Erythema

9. What would happen to a film that is placed in the fixer prior to development
8-16 inches
Not centered on sensor
Blank or clear (takes all of the crystals off)
Zygoma will be radiopaque - max. sinus will be a large area of radiolucency

10. With What type film are intensifying screens used?
Green light sensitive film (Kodak T-Mat)
decrease mA & time
extraoral film
Increase the area of radiation exposure

11. What is the maximum size of the x-ray beam at the patients face
Nerve - brain - muscle
Perpendicular to the film - parallel to the bite portion of the stabe
CCD (direct) - CMOS (direct) - PSP (indirect)
2.75 inches

12. What Size film is used to take a BW on a 3 yr. old
Insufficient vertical angulation
#0
20 min
Density

13. What is small doses of radiation given over a long period of time
Short
Roentgen
Long-term dose
Focal spot

14. How often should an FMS be taken on an adult with no significant medical history
Take FMS on all new patients; recall adults with no sig. med. history only require BW and PA - if indicated
As far as practical
Lateral cephalometric
Check the processing chemical - particularly the developer

15. How does exposure time for children compare to that of an adult
Highest of the 2 ridges - about the level of the cervical 3rd - behind the 2nd and 3rd molars
1/3-1/2
Remove silver
Overdevelopment -temp. too high -time too long -developer concentration too high -inadequate fixation -accidental exposure to light -improper safelighting

16. What part of the x-ray machine is responsible for providing the electrons
Filament
Long-term dose
Part that was fixed but not developed would be clear
Highest of the 2 ridges - about the level of the cervical 3rd - behind the 2nd and 3rd molars

17. What radiographs are used to determine if a foreign object is located facially or lingually
After 2-3 min of fixing if needed
Occlusal
5 mSv or .5 REM
Step-wedge or test film

18. What is the purpose of the embossed dot

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

19. What quality control procedures should be performed on xray cassettes
No. 4
Periodically examining cassettes and intensifying screens; extra oral cassettes should be checked for warping and light leaks
Left molar PA
No. 2

20. What looking at manually processed films - you notice small black spots on the films. What caused those spots?
No. 1
Blue light sensitive films
Premature contact w/ developing chemicals - Drops of developer or fixer that splash onto the work area and came in contact with the film.
Aluminum

21. which anatomic feature is visible on a PANO - bu not on a PA
Excessive vertical angulation
Mand. foramen
Coulombs/kilogram(C/kg) & Roentgen (R)
Gently agitating the hanger up and down a few times

22. Explain PSP
KVp
Photostimuable Phosphor Plate aka storage phosphor system -indirect digital imaging -captures analog data then processed in a laser scanning device -light is then converted into electrical signal that the computer uses to create the digital image
Perpendicular to the film - parallel to the bite portion of the stabe
Reduce size and shape of beam

23. your dentist recommends that a patient have xrays taken - bu the patient refuses. What should be done

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

24. What type of x-rays have greater penetrating power - long or short wavelength?
Gray & Rad
Short
max molars have 3 roots - mand have 2 roots
Perpendicular to the film - parallel to the bite portion of the stabe

25. What are automatic processors faster than manual processing?
To distinguish b/w patient's right and left side
For every 30 films processed 6-8 oz should be taken out and replaced with fresh solution
As close as possible
B/c of its stability to produce a large volume of radiographs in a short amount of time

26. What is the name for the part of the target that is struck by electrons
Remove silver
Focal spot
Short-term dose
Air space and soft tissues

27. What anatomical structures appear radiopaque on a dental radiograph
Enamel - dentin - and bone
Stop taking xrays and evaluate all equipment and techniques to ensure safety
Nerve - brain - muscle
MRI

28. When mounting a FMS - you notice that one film is blank. another film is dark - the teeth look strange - and it is difficult to determine What film it is. What do you think happened?
Method should be compensated for bisecting or paralleling
Dark film is from over exposure and improper packet placement for strange looking teeth and not being able to determine What film is
Gray & Rad
Shadow around the tooth

29. You process a set of BW's in the automatic processor. three of the BW's are of good quality - but fourth is completely blank. What probably caused this?
No exposure to x-rays - electrical failure - malfunction of x-ray machine - or processing errors
DEHNR
Chronic low-level exposures/long term dose; causing cancer - cataracts - low birth weight - genetic mutations - and embryological defects
Vertical BW

30. What determines the speed of dental films?
Size of crystals - thickness of emulsion - radiosensitive dyes
Blue light sensitive films
Reg. replenishment and changing out expired solutiong with fresh chemicals at reg. intervals; monitor strength of chemicals on a daily basis
KVp

31. What NC agency is resposible for monitoring dental x-ray equipment
Move farther from the radiation
DEHNR
Copper stem - tungsten target - radiator
Premature contact with developer

32. What 3 types of cells are most radiosensitive
5 min
WBC - RBC - immature reproductive cells
Top of film delineated by a straight line then dark
Cosmic - naturally occuring radiation from earth - radiation for radioactive materials

33. On a mandibular molar PA - Where is the mylohoid ridge located
Shadow around the tooth
D - E - F
Highest of the 2 ridges - about the level of the cervical 3rd - behind the 2nd and 3rd molars
Aluminum

34. How does exposure time for edentulous patients compare to dentulous patients
D - E - F
Ionization
1/4 as intense
1/5 exposure time for edentulous

35. 1/10th dosage of gen. public - What are photons
Quantum of energy
Photostimuable Phosphor Plate aka storage phosphor system -indirect digital imaging -captures analog data then processed in a laser scanning device -light is then converted into electrical signal that the computer uses to create the digital image
Depends on the needs of the patient - established after intraoral exam
take 14 radiographs -omit the BW -paralleling should be technique of choice -panoramic might be better than FMS

36. How should the frequency of radiographic exposures be determined
Depends on the needs of the patient - established after intraoral exam
Short-term dose
#3
Direct - directly obtaining a digital image by exposing intraoral sensor to x-rays to provide an image that can be viewed on a computer - indirect - photostimuable phosphor plate sensor technology - obtaining a digital image in which an exposed phosp

37. How should x-ray film be stored
Absorb scatter radiation and prevent fogging
Gently agitating the hanger up and down a few times
Original packaging -area sheilded from radiation -50-70 degrees F
Erythema

38. What type of angulation is used when taking radiographs of the mand. arch
Mandibular lateral/central
On the back side of the tori
The mental ridge
Negative

39. What is the optimum processing temp.
turn on machine -adjust settings -press exposure button -filament heats up/thermoionic emmision -electron cloud is formed -electrons flow from cathode to anode -electrons strike target -energy is converted into x-rays and heat
Patient movement
Erythema - vomitting - nausea - hemorrage - diarrhea - hair loss
68 degrees F

40. when viewing a PANO - you notice that a lot of spine sHows on both side of the film - What caused this
Genetic cells
Positioning the arches too far foward
5 mSv or .5 REM
Blue light sensitive films

41. How does resolutiong and detial of a panoramic radiograph compare with that of PA's and BW's
Cracking of the emulsion caused by excessive temp diff. b/w any darkroom solutions
Check the processing chemical - particularly the developer
Not as sharp and detailed as the intraoral image
Cut exposure time by 1/3

42. You take a radiograph using 10 mA 30 impulses and 90 kVp - your dentist wants a radiograph with increased contrast and equal density. What settings would you use?
Soft tissue - air space
Photostimuable Phosphor Plate aka storage phosphor system -indirect digital imaging -captures analog data then processed in a laser scanning device -light is then converted into electrical signal that the computer uses to create the digital image
Decrease kVp by 15 and double exposure time = 10 mA 60 impules 75 kVp
Central ray

43. when mounting a film the dot is convex - On What side of the mouth would you find #32?
Absorb scatter radiation and prevent fogging
Direct - directly obtaining a digital image by exposing intraoral sensor to x-rays to provide an image that can be viewed on a computer - indirect - photostimuable phosphor plate sensor technology - obtaining a digital image in which an exposed phosp
#2
Left side

44. How much total filtration is required of x-ray machines that operate lower than 70 kVp
1.5 mm
Oral piercings - earings - glasses - necklaces - facial piercings - hair pins - hearing aids - dentures - and retainers
Zygoma will be radiopaque - max. sinus will be a large area of radiolucency
Film placed backwards

45. What 2 unites are used to measure absorption
No exposure - or fixer before developer
Gray & Rad
Extra oral
X-rays that have been deflected from an object and have changed paths

46. What is the term to describe the overall blackness of a radiograph
Reduce size and shape of beam
locate retained roots -locate unerrupted or impacted teeth -evaluate for diseases and lesions -locate foreign bodies -reveal presence of salivary stones (sialothiths) -aid in evaluating fractures -size and shape of tori -aid in examining patients wit
Nasal fossa - max sinus
Density

47. What is the annual MPD for pregnant dental assistant
Oral piercings - earings - glasses - necklaces - facial piercings - hair pins - hearing aids - dentures - and retainers
Left side
5 mSv or .5 REM
Chin down

48. How often should developing solutions be changed
Copper stem - radiator and air space
Chin down
Every 4 weeks
Image the entire dentition - surrounding alveolar bone - sinuses - and the TMJ - examine large area of face and jaws - locate impacted teeth - retain root tips - evaluate trauma - lesions - and diseases - and assess growth and development

49. What info should be recorded on the dental radiographic mount

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

50. when taking a PANO radiograph - the patient is placed too far into the machine. How will the radiograph appear
No. 4
All of the ant. teeth will appear blurred and narrowed in width
50 mSv (5rem)
Increase the area of radiation exposure

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Radiology 2

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests