Welcome to StudyStack, where users create FlashCards and share them with others. Click on the large flashcard to flip it over. Then click the green, red, or yellow box to move the current card to that box. Below the flashcards are blue buttons for other activities that you can try to study the same information.
Reset Password Free Sign Up

Free flashcards for serious fun studying. Create your own or use sets shared by other students and teachers.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Beam Restriction

Beam Restriction Study Sheet

What is the best way(s) to reduce the amount of scatter reaching the film? By restricting the x-ray beam and by using a grid.
What 2 factors affect the amount of scatter radiation produced? kVp and irradiated material (patient thickness)
Name the 4 types of beam restrictors. Aperture diaphragm, cones, cylinders, and collimators (ACCC)
What is another name for automatic collimators? Positive beam limitation devices (PBL)
X-ray beam and light should coincide within ___ of SID. 2%
The principal factors that affect the amount of scatter produced are? Kilovotage and the irradiated material
As kilovotage increase, the percentage of x-rays that undergo a Compton interaction __________ and the percentage of photons that undergo photoelectric absorption _________. Increases, decreases
The total number of photons that undergo interaction __________ with increased kVp. Decreases
When the beam is restricted, _______ scatter radiation will reach the IR, and as a result, technical factors may need to be ________. Less, increased
Cones and cylinders are most commonly employed in radiography of the ________, _______, ___________, and ____________. Skull, spine, gallbladder, breast
_________ _________ ____________ devices are automatic collimators that use sensing devices to activate collimator shutters into proper position. Positive beam limitation
Higher atomic number materials attenuate a ________ percentage of the beam than low atomic number materials. Greater
__________ is the quantity of matter per unit of volume measured in kilograms per cubic meter. Density
________ __________ is the degree of differential absorption resulting from the differing absorption characteristics of the tissues in the body. Subject contrast
Created by: rad1958tech

bad sites Copyright ©2001-2016  StudyStack LLC   All rights reserved.