« previous next »

Author Question: A form of beam restriction that is a flat piece of lead with a hole of the designated size and shape ... (Read 47 times)

Jipu 123

  • Hero Member
  • *****
  • Posts: 569
on: Jul 17, 2018
A form of beam restriction that is a flat piece of lead with a hole of the designated size and shape in its center is:
 
 an aperture diaphragm
  an extension cone
  PBL
  manual collimation

Question 2

Which positioning line connects the mentum of the chin to the external auditory meatus?
 
 infraorbitomeatal line
  acanthiomeatal line
  orbitomeatal line
  mentomeatal line


joshraies

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 17, 2018
Answer to Question 1

an aperture diaphragm

Rationale: Aperture diaphragms provide an unexposed border around the periphery of the image. Dedicated chest units apply a fixed aperture diaphragm.

Answer to Question 2

mentomeatal line

Rationale: The line that connects the mentum of the chin to the external auditory meatus is the mentomeatal line.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Shape of the thymus gland. Shape of the thymus gland.
Fossil Size Fossil Size
Display piece, Yoruba culture. Display piece, Yoruba culture.
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Use a full hand/flat of fingers to apply L stroke to face, below the eye and to the edge of the ... Use a full hand/flat of fingers to apply L stroke to face, below the eye and to the edge of the ...
Video: Condensation and Hydrolysis Animation

For a complete list of videos, visit our video library