Question 1

The dental specialists who routinely use extraoral radiographs are ____________.

Accepted Answer

Oral surgeons and orthodontists commonly use extraoral radiographs to assess and plan for surgeries, and to evaluate teeth alignment and jaw relationships, respectively.

Question 2

Match between columns
                        Premises: CDC device
Gray scale
Digitize
Analog image

Accepted Answer

The Answer of Image produced by traditional film, continuous spectrum is...

Question 3

Extraoral cassettes are usually lined with ____________.

Accepted Answer

Extraoral cassettes are used for taking radiographs of larger areas, such as the skull or spine. These cassettes are usually lined with intensifying screens, which help to reduce the amount of radiation required for the image. Some extraoral cassettes also use phosphors, which convert X-rays into visible light and are then detected by a computer or other imaging device. Therefore, both A and B are correct, making choice C the best answer.

Question 4

Sensor/image plates for digital imaging can come in which of the following sizes and designs?
1) Printer
2) Panoramic
3) Computer
4) Cephalometric
5) Scanner
6) Full-sized "0" x-ray
7) Full-sized "2" x-ray

Accepted Answer

Sensor/image plates for digital imaging in the context of dental and medical imaging can come in specific sizes and designs tailored for different types of x-rays or imaging needs, such as panoramic, cephalometric, and various sizes of x-ray plates like full-sized "0" and "2".

Question 5

Which dental specialty routinely uses the cephalometric radiograph?

Accepted Answer

The cephalometric radiograph is routinely used by orthodontists to evaluate the facial and dental structures. It provides a two-dimensional image that allows for the analysis of craniofacial growth and development, as well as the positioning of the teeth and jaws. Oral surgeons may use cephalometric radiographs in certain cases, but it is not a routine part of their specialty. Periodontists typically focus on the health of the gums and supporting structures, and would not routinely use cephalometric radiographs.

Question 6

The radiograph used to assess the patient's skeletal profile and structure is ____________.

Accepted Answer

A cephalometric radiograph is used specifically to assess the patient's skeletal profile and structure, including the size and position of the jaws and teeth. Periapical radiographs show a detailed view of individual teeth, bitewing radiographs show a close-up view of the crowns of the upper and lower teeth, and panoramic radiographs show a broad view of the entire oral cavity.

Question 7

Which of the following features of digital radiography can a radiographic image display?

Accepted Answer

Digital radiography allows for images to be digitized (stored on a computer), sent to another office electronically, and enhanced using various software tools.

Question 8

The computer monitor can display over ________ shades of gray, but the human eye can detect only ________ shades of gray.

Accepted Answer

According to research, a computer monitor can display over 200 shades of gray, while the human eye can only detect about 32 shades of gray. Hence, option B is the correct answer.

Question 9

The ________ is one of the most widely used image receptors in dental digital radiology

Accepted Answer

CCD (Charge-Coupled Device) is a type of sensor that converts light into electronic signals, which are then transformed into a digital image. It is widely used in dental digital radiology as it provides high-quality images with low noise and fast processing times. PID (Position Indicating Device) is not an image receptor, but rather a component of the x-ray machine that helps position the x-ray beam accurately. Therefore, option C is not correct, and option D is also incorrect as CCD is a valid option.

Question 10

The following are disadvantages of digital radiography EXCEPT ____________.

Accepted Answer

All of the options listed are disadvantages of digital radiography except for the capability to enhance, contrast, or zoom in on an image from chairside. This is actually a distinct advantage of digital radiography over traditional film radiography.

Question 11

Utilizing the panoramic radiograph, identify the following mandibular landmarks by abbreviations. 
  
A. (ac) 
B. (bom) 
C. (c) 
D. (cor) 
E. (eor) 
F. (mc) 
G. (mf) 
H. (s)

Accepted Answer

The answer of Utilizing the panoramic radiograph, identify the following...

Question 12

The following are advantages of using digital radiography EXCEPT ____________.

Accepted Answer

The statement "sensors are usually thicker, causing the patient to gag" is a disadvantage of using digital radiography, not an advantage. The other options listed are advantages of using digital radiography.

Question 13

When a conventional x-ray machine is used with digital radiography, the x-ray machine should be capable of producing ____ kV.

Accepted Answer

A conventional x-ray machine used with digital radiography typically requires a lower kV range compared to film-screen systems, typically around 70 kV. This is because digital systems have a wider dynamic range and can capture a greater range of shades of grey than film, allowing for a lower kV to be used while still maintaining image quality.

Quiz 23: Extraoral and Digital Radiography

The dental specialists who routinely use extraoral radiographs are ____________.

Match the following digital radiology terminology with the definition.