Author Question: A form of beam restriction that is a flat piece of lead with a hole of the designated size and shape ... (Read 44 times)

Jipu 123

  • Hero Member
  • *****
  • Posts: 569
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
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
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

For a complete list of videos, visit our video library