This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following is not a form of beam restriction? collimators wedge filter cones ... (Read 26 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 17, 2018
Which of the following is not a form of beam restriction?
 
 collimators
  wedge filter
  cones
  aperture diaphragms

Question 2

Which of the following factors would not indicate the need for a grid?
 
 higher kVp
  a thicker part
  increased SID
  increased OID


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jul 17, 2018
Answer to Question 1

wedge filter

Rationale: A wedge filter will not serve as a means of beam restriction, but rather a means to create a more uniform density on parts of uneven part thickness, e.g., foot, t-spine.

Answer to Question 2

increased SID

Rationale: A grid is suggested with parts measuring over 10 cm and with higher kVp. Increased kVp values influence the amount of scatter radiation produced. In cases where increased OID is a factor with a thicker part, the theory of the air-gap technique could apply, avoiding the need for a grid.


washai

  • Member
  • Posts: 523
Reply 2 on: Jul 17, 2018
Gracias!

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Embryonic cells form the placenta Embryonic cells form the placenta
Gastric cancer. In advanced stages of gastric cancer, malignant cells spread to form tumors in the l Gastric cancer. In advanced stages of gastric cancer, malignant cells spread to form tumors in the l
El Lissitzky, Beat the Whites with the Red Wedge. El Lissitzky, Beat the Whites with the Red Wedge.
Instructions for Completing the CMS-1500 (02/12) Claim Form Instructions for Completing the CMS-1500 (02/12) Claim Form
The absorption spectra of the three classes of cones. The absorption spectra of the three classes of cones.
Analysis of a restriction fragment length Polymorphism Analysis of a restriction fragment length Polymorphism
Video: Hormonal feedback loop components

For a complete list of videos, visit our video library