Radiology Final (book)

3 items essential to every x-ray unit
1.
2.
3.

The x-ray unit must have its own ______

______ has two filaments made of tungsten

Has a high melting point of _______ and high atomic number of ______. Heat and electron absorbent. High melting point so very resistant to heat.

Cathode houses a focusing cup, inside the focusing cup are the ______ made of ______.

It is here, on the ________ of the _______ that x-rays are produced and it is here that the exceptional amount of heat must be dissipated.

2 types of anodes:
1. ______ mainly used for____
2. ______ mainly used for____

Anode is made of _______ or a _________ alloy.

The _____ is mounted within the rotating anode and directs the x-rays down to ______.

Anode serves several functions:
1.
2.
3.

Things that can go wrong that affects the process of taking a radiograph ---->

Intensifying screen made of ______ and ______.

The base of the intensifying screen is made of _________, virtually indestructible.

Speed at which x-rays are converted to light by the individual phosphors is called the

________ is the response of the screen both in brightness and over time.

Patient thickness and conformation will determine _______.

The mechanical variables available to enhance contrast are collectively called ________.

______ - the intensity of the radiation at a location is inversely proportional to the square of its distance from the source of the radiation.

______ is the power behind the x-ray

Energy is transformed when the photons bounce off one another or the atoms within the patient. This excess of energy results in ______.

____ is responsible for penetration of the x-ray beam. Power behind the x-ray. If ______ is too high there will be no contrast. ____ greatly affects contrast.

kV generally range ____ - ____

mA is responsible for _____

3 factors to be adjusted on generator are _____, ______, and _______.

Developing technique charts:
3 "commandments" (bullshit)
1)
2)
3)

The log book must include:

____ is an enemy of resolution.

Foreshortening or elongation of a body part due to angulation of the body part, the x-ray receptor, or the tube.

Source image distance (SID) on most veterinary radiography units is _____ inches

The unit immediately beneath the x-ray tube is the ________.

_______ has one standard function and that is to produce a light beam that is coincident with the x-ray beam and covers the region of interest.

The radiation produced in this manner has much lower energy than the usable photon stream.

______ are used to transmit light evenly through a specially produced glass in order to identify and interpret radiographic images.

Device in which vertical strips of metal interspace with a radiolucent material and are enclosed by metal straps and mounted into an oscillating tray that is connected to the exposure switch on the radiography unit.

The potter-bucky diaphragm was designed to eliminate ______ and improve ______.

The _________ is the formula that determines the increase in technical factors to compensate for this absorption.

The temperature of the dark room should be maintained at ______. Humidity should be maintained at ______.

Two main components in developer are _______ and ________.
Their main function is to reduce ________ in the film emulsion to _________.

Radiographic chemical are to be kept at a temperature of _______.

Removes unexposed silver halide, and it further hardens the image to the base.

Steps to processing the film:
1. _________ - duration? (68°F)
2. _________ - duration? (68°F)
3. _________ - duration? (68°F)
4. _________

Inside the CR cassette is a single intensifying screen that traps the image by means of a _______________. In this form the screen is referred to as an _________.

The front of the imaging plate is coated with a photostimulable phosphor (PSP), usually ___________.

Noise is greatest in CR at the lower levels as a result of