Introduction to imaging sciences 2

What does KV controls?

Penetration

The device that receives energy from the x-ray beam and forms the image of the is termed?

Image receptor

In the computed radiography, what does the image plate contain and image is stored?

Phosphors

What are the types of image receptors?

1. Image plate (cr plate)

2. Solid state detectors (DR) table

3. Wireless solid state detectors (DR)

Name some solid state detectors:

1. Flat panel thin-film transistor which consists of direct flat panel or indirect flat panel

2. Charged coupled device

When an image plate is placed in a reader, it is scanned by what?

Laser

How can the technologist control voluntary motion?

Shortest exposure time, immobilization, or explain the procedure

How can the technologist control involuntary motion?

Shortest exposure time

What must be imprinted on each image?

1. Date of service or when the image was taken

2. R or L marker

3. Institution where it was taken

4. name of the patient of ID number

Who's responsible for cleaning the x-ray room?

The technologist

Who's responsible for getting a clinical history from the patient?

Technologist

Who's responsible for getting the identity of the patient?

Technologist

What need to be on the x-ray requisition?

1. The patient's name

2. What is to be x-rayed

3. And a suspected or existing diagnosis

Are technologist allowed to inform the patient of the results of their x-rays?

No

Can technologist show their patients their x-rays?

No

If the patient is left alone in a room on a stretcher, what must the technologist always remember to do ?

Oh the side rails up

If a technologist is at risk to get splashed by blood or body fluid during an exam, what must the technologist be wearing in addition to gloves?

Gown, eyewear, and or a mask

What must be done with needles and syringes after they are used? And should they be recapped?

Placed in the sharp box and no

What is the technologist allows to touch in the OR?

The C-arm or portable controls. Anything not sterile

In trauma, do the technologist remove splits, bandages, immobilization devices etc. from a body part before x-raying?

No

How do you support an injured extremity?

By both joints

What does disinfectant do?

Kills micro organisms that are pathogenic (disease producing) with chemicals

What is an example of a disinfectant ?

Diluted bleach

When we need to completely destroy all micro-organism and their spores what is it called?

Sterilization

What is the best method to prevent infection?

Handwashing

When sending a hand or foot to PACS at Grady, what is the correct orientation?

Digits pointing toward the ceiling and viewed from the perspective of the x-ray tube

Name some minor surgical procedures done in radiology?

Myelography and angiography

How are oblique projections displayed on a computer monitor?

In anatomical position

When you are using a portable/mobile unit, does the technologist need to set a technique on the unit?

Yes

How is a lateral radiography displayed on a view box or computer?

In the same orientation as though the viewer were looking at the patient from the perspective of the x-ray tube at the side where the x-rays enter into the patient

What technical factors can be set on the control panel?

mAs and KV

What is mAs

Is the amount of exposure mA and time

What is the formula to find mAs ?

mA x time

What is KV?

amount of energy

Which image receptors delivers a high quality preview image?

Direct digital

What are solid state detectors or direct digital

It is a cassette-less system that converts image directly or indirectly into a digital format. The image is seen on a computer monitor within seconds

What is indirect flat panels?

Measures the x-ray signs by converting from the x-rays to visible light to charge and then to the digital signal

What is direct flat panels

Skips the visible light step and the x-rays are converted directly to electrons, and then the charge is digitized

How is display of images shown on the monitor?

Patient's left side is on the viewer's right side; image is rotated on computer monitor so that person looking set the images sees the body parts in the anatomical position