DH 1401 Ch 6 Dental X-Ray Image Characteristics Quiz

Shima and Simon are photographers. Shima prefers high contrast photos while Simon prefers low contrast ones. Can you tell the difference between their preferences?

• Shima's photos have very dark and very light areas, while Simon's photos have many shades of gray.

• Shima's photos have many shades of gray, while Simon's photos have very dark and very light areas.

• Shima's photos have only two densities, while Simon's photos have many densities.

• Shima's photos have many densities, while Simon's photos have only two densities.

Emily is a dental student. She is studying about dental imaging and is confused about what determines the overall contrast of a dental image. Can you help her out?

• Is it the film contrast?

• Or is it the subject contrast?

• Could it be both film contrast and subject contrast?

• Or is it neither film contrast nor subject contrast?

Shima is analyzing a photograph and notices that it has short-scale contrast. What does this mean about the photograph?

• The photograph has only two densities

• The photograph has many densities

• The photograph has very dark and very light areas

• The photograph has many shades of gray

Emily is working in a dental clinic and needs to determine the overall contrast of a dental image. Which tool should she use?

• Stepwedge

• Sharpness meter

• Magnification evaluator

• Distortion assessor

Tags

NGSS.HS-PS4-3

During a radiography class, Danica, Nancy, and Sunipha were discussing about the three geometric characteristics of a radiographic image. Can you identify what they were referring to?

• Density, contrast, and sharpness

• Magnification, distortion, and contrast

• Sharpness, magnification, and distortion

• Contrast, distortion, and density

During a photography class, Anome, Shima, Yesenia, Sunipha, and Danica were discussing what could influence the sharpness of the images they take. What did they conclude?

• The size of the focal spot on their cameras

• The composition of the film they use

• Any movement while taking the photo

• All of the above

Tags

NGSS.HS-PS4-5

During a science experiment, Emily and Sunipha were discussing about the magnification of images. They came up with different factors that might cause it. Emily suggested it could be due to the divergent paths of the x-ray beam. Sunipha thought it might be due to the target-receptor distance. Yesenia, who was listening to their conversation, suggested it could be due to the object-receptor distance. Anome, who was also part of the group, suggested it could be all of the above factors. Who do you think is correct?

• Emily's suggestion: Divergent paths of the x-ray beam

• Sunipha's suggestion: Target-receptor distance

• Yesenia's suggestion: Object-receptor distance

• Anome's suggestion: All of the above

Nancy is a radiologist and she is examining a radiographic image. She notices some distortion in the image. What could be the possible meaning of this distortion?

• A variation in the true size and shape of the object being radiographed

• Unequal magnification of different parts of the same object

• Improper alignment of the object and film

• Angulation of the x-ray beam

During a dental radiography session, Sunipha and Simon are discussing how to avoid distortion in the radiographic image. What must be parallel to each other to achieve this?

• Object and film

• X-ray beam and tooth

• Object and x-ray beam

• Film and tooth

During a dental check-up, Emily needs to have a radiographic image taken. To avoid distortion in the image, what must be perpendicular to each other?

• Object and film

• X-ray beam and tooth

• Object and x-ray beam

• Film and tooth