« 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 46 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?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat
Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR
Sample Student Externship Form Sample Student Externship Form
Actions of glucagon in liver that lead to a rise in blood glucose Actions of glucagon in liver that lead to a rise in blood glucose
Spacecraft optimum geometrical shape Spacecraft optimum geometrical shape
Video: Component of feedback systems & Communication and regulation of body systems

For a complete list of videos, visit our video library