Question 1

MRI actually measures:

Accepted Answer

A) proton density. 
B) neutron density. 
C) electron density. 
D) combination of electron,proton,and neutron density. 
A) proton density. 
B) neutron density. 
C) electron density. 
D) combination of electron,proton,and neutron density. A

Question 2

Identify the reason that the technician takes a scout film when taking images with CBCT?

Accepted Answer

A) To determine is the density is properly adjusted. 
B) To determine if the contrast is properly adjusted. 
C) To determine if the patient is properly positioned. 
D) To determine is the exposure time is properly adjusted. 
A) To determine is the density is properly adjusted. 
B) To determine if the contrast is properly adjusted. 
C) To determine if the patient is properly positioned. 
D) To determine is the exposure time is properly adjusted. C

Question 3

The cost to the patient for a CT scan is more expensive compared to a panoramic radiograph.

Accepted Answer

A) True 
 B)False  True

Question 4

Computed Tomography eliminates the superimposition of images of structures superficial or deep to the area in question,but has an increased radiation dose when compared with conventional film.

Accepted Answer

A) Both statements are true. 
B) Both statements are false. 
C) First statement is true,second is false. 
D) First statement is false,second is true. 
A) Both statements are true. 
B) Both statements are false. 
C) First statement is true,second is false. 
D) First statement is false,second is true.

Question 5

Cone beam computed tomography generate significantly less radiation than do traditional medical CT scanning devices,but deliver poorer diagnostic images.

Accepted Answer

A) Both statements are true. 
B) Both statements are false. 
C) First statement is true,second is false. 
D) First statement is false,second is true. 
A) Both statements are true. 
B) Both statements are false. 
C) First statement is true,second is false. 
D) First statement is false,second is true.

Question 6

What does a CT number represent?

Accepted Answer

A) The light of a particular area that has been penetrated by the x-ray beam. 
B) The beam of a particular area that has been penetrated by the x-ray beam. 
C) The density of a particular area that has been penetrated by the x-ray beam. 
D) The contrast of a particular area that has been penetrated by the x-ray beam. 
A) The light of a particular area that has been penetrated by the x-ray beam. 
B) The beam of a particular area that has been penetrated by the x-ray beam. 
C) The density of a particular area that has been penetrated by the x-ray beam. 
D) The contrast of a particular area that has been penetrated by the x-ray beam.

Question 7

Identify which technique uses organ-specific compounds that are injected into the patient,and are detected and imaged by a sensor called a gamma camera.

Accepted Answer

A) MRI 
B) CBVT 
C) CT Scan 
D) Nuclear medicine 
A) MRI 
B) CBVT 
C) CT Scan 
D) Nuclear medicine

Question 8

The patient's maxillofacial area that is of interest when taking a CBCT image is known as the field of view (FOV).

Accepted Answer

A) Target 
B) Focal-film distance 
C) Field of view (FOV) 
D) Object-film distance 
A) Target 
B) Focal-film distance 
C) Field of view (FOV) 
D) Object-film distance

Question 9

Radionuclide scanning is useful for examining all of the following EXCEPT one.Which one is the EXCEPTION?,bone and salivary gland tissue,as well as for investigating metabolic bone disorders,infection,and bone fractures.

Accepted Answer

A) Bone fractures 
B) Periodontal disease 
C) Metabolic bone disorders 
D) Bone and salivary gland tissue 
A) Bone fractures 
B) Periodontal disease 
C) Metabolic bone disorders 
D) Bone and salivary gland tissue

Question 10

The same sources of energy are used for CT scanning than for MRI.

Accepted Answer

A) True 
 B)False

Question 11

All of the following describe wavelengths used in MRI EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A) Long 
B) Gamma radiation 
C) Cannot cause ionization 
D) Do not produce a radiation dose to the patient 
A) Long 
B) Gamma radiation 
C) Cannot cause ionization 
D) Do not produce a radiation dose to the patient

Question 12

CT images for implant planning should have cross-sectional views.

Accepted Answer

A) True 
 B)False

Question 13

The energy source for CT scans is:

Accepted Answer

A) beta radiation. 
B) radiofrequency. 
C) ultrasound. 
D) x-radiation. 
A) beta radiation. 
B) radiofrequency. 
C) ultrasound. 
D) x-radiation.

Question 14

A CT scan taken in the axial plane can be reformatted to the sagittal and frontal planes.

Accepted Answer

A) True 
 B)False

Question 15

CBVT (CBCT)imaging may be utilized in dentistry for all of the following conditions EXCEPT:

Accepted Answer

A) oral pathologies. 
B) implant treatment planning. 
C) evaluation of impacted teeth. 
D) evaluation of interproximal caries. 
A) oral pathologies. 
B) implant treatment planning. 
C) evaluation of impacted teeth. 
D) evaluation of interproximal caries.

Question 16

What is the average absorbed dose from a CBCT scanner?

Accepted Answer

A) 12.0 mSv (millisieverts) 
B) 15.0 mSv (millisieverts) 
C) 10.0 mSv (millisieverts) 
D) 13.0 mSv (millisieverts) 
A) 12.0 mSv (millisieverts) 
B) 15.0 mSv (millisieverts) 
C) 10.0 mSv (millisieverts) 
D) 13.0 mSv (millisieverts)

Question 17

CT images can be transmitted to specialists for consultation.

Accepted Answer

A) True 
 B)False

Question 18

Water makes up approximately:

Accepted Answer

A) 1% of human tissue. 
B) 10% of human tissue. 
C) 50% of human tissue. 
D) 70% of human tissue. 
A) 1% of human tissue. 
B) 10% of human tissue. 
C) 50% of human tissue. 
D) 70% of human tissue.

Exam 16: Advanced Imaging Systems

MRI actually measures:

Identify the reason that the technician takes a scout film when taking images with CBCT?

The cost to the patient for a CT scan is more expensive compared to a panoramic radiograph.

Computed Tomography eliminates the superimposition of images of structures superficial or deep to the area in question,but has an increased radiation dose when compared with conventional film.

Cone beam computed tomography generate significantly less radiation than do traditional medical CT scanning devices,but deliver poorer diagnostic images.

What does a CT number represent?

Identify which technique uses organ-specific compounds that are injected into the patient,and are detected and imaged by a sensor called a gamma camera.

The patient's maxillofacial area that is of interest when taking a CBCT image is known as the field of view (FOV).

Radionuclide scanning is useful for examining all of the following EXCEPT one.Which one is the EXCEPTION?,bone and salivary gland tissue,as well as for investigating metabolic bone disorders,infection,and bone fractures.

The same sources of energy are used for CT scanning than for MRI.

All of the following describe wavelengths used in MRI EXCEPT one.Which one is the EXCEPTION?

CT images for implant planning should have cross-sectional views.

The energy source for CT scans is:

A CT scan taken in the axial plane can be reformatted to the sagittal and frontal planes.

CBVT (CBCT)imaging may be utilized in dentistry for all of the following conditions EXCEPT:

What is the average absorbed dose from a CBCT scanner?

CT images can be transmitted to specialists for consultation.

Water makes up approximately:

The History of Ionizing Radiation and Basic Principles of X-Ray Generation

The Dental X-Ray Machine

Image Formation

Image Receptors

Biologic Effects of Radiation

Patient Protection

Operator Protection

Infection Control in Dental Radiography

Intraoral Radiographic Technique: the Paralleling Method

Accessory Radiographic Techniques: Bisecting Technique and Occlusal Projections

Film Processing Techniques

Panoramic Radiography

Extraoral Techniques

Radiography of the Temporomandibular Joint

Digital Imaging

Quality Assurance

Patient Management and Special Problems

Film Mounting and Radiographic Anatomy

Principles of Radiographic Interpretation

Caries and Periodontal Disease

Pulpal and Periapical Lesions

Developmental Disturbances of Teeth and Bone

Bone and Other Lesions

Legal Considerations

Filters