O Week Notes

Carcinogenic

cancer causing

Penetrometer

strip of metal w diff thicknesses used to check an X-ray image's sharpness and accuracy

Collimation

The process of making an area that will receive radiation (aiming for smallest beam to minimize radiation exposure)

Backscatter

bounces up from the table underneath (built-in lead lining of a cassette at the bottom catches it)

Dosimeter

measures your exposure to scatter radiation

SID

Source Image Distance

Focal Film Distance/Source Image Distance

area btw where the x ray is released to where it hits the image receptor (i.e cassette or digital plate)

Tube Head

moves up or down to accommodate the distance (SID or FFD)

Forward Scatter

bounces off the patient (a loose lead blocker on top catches it)

FFD

Focal Film Distance

Collimator

projects light onto your image receptor adjusting where and the size of an x-ray (think of it like a photo frame anything outside the frame will NOT be captured)

T or F: You’re NEVER allowed to leave the VT building w your dosimeter on unless its for a quick BU break

FALSE: Never

T or F: Radiation can penetrate through q substance

FALSE: radiation CANNOT penetrate through q substance

What unit is the anatomical area measured in?

centimetres (always measure thickest part)

Fill In The Blank: Bones have _______ anatomic # than your tissue, so you’ll need a ______ level of radiation to penetrate for a bone x-ray.

Bones have ⬆ anatomic # than your tissue, so you’ll need a ⬆ level of radiation to penetrate for a bone x-ray

Fill in The Blank: A ____ is used when any part measure ______ cm opposed to a table top

A grid (bucky) is

used when any part measure >10 cm opposed to a table top

What has to be @ a consistent distance to get the “ [] when taking multiple x-rays?

The x-ray source and image receptor need to b @ a consistent distance to get the “ [] when taking multiple x-rays

Think: when a flashlight is held higher = < [] but when its held lower = > [] so w x-rays you want it consistent esp 4 dx

What type of restraint does UoG use?

Hands free restraint using chemical sedation

What are the 5 MUST haves on an x-ray label?

1. Vet & Clinic/Hospital

2. Patient Name & # (or last name if it’s privately owned)

3. Animal Log #

4. Date

5. Initials

How many “ is the FFD from the table top and bucky?

40”

What type of tape is used for x ray labels which are always placed w in the collimated area?

Lead impregnated tape