Radiology

Who created the first xray and when?

Wilhelm Conrad roentgen Nov 8th 1895

Crooks

First xray tube

HC snook

Increased electricity

Coolidge tube

Hot cathode

Thomas Edison

Fluoroscopy

Clarence daily

Assistant / first martry

George Eastman

Plastic film

Roentgen

Image of wife's hand

Procedure?

1 . Position anatomy

2. Aligns xray tube

3. Set exposure factors

4. Activates exposure switch

Production?

1. A vacuum

2. Electron source

3. Target for elections

4. Activates exposure switch

Radiation

Travels in straight lines

Affects biological tissues

can penetrate the body

Cannot be detected by human senses

X ray tube housing

Protective and supports

Collimator

Controls size of radiation field

light provides centering lines

Transformer and control console

Provides high voltage

In shielding control booth

Fluoroscopic equipment

Dynamic images

mA

Milliamperage , quantity

Time

Exposure time, secs, milliseconds

kVp

Kilovoltage, quality

SID

Source image distance, affects intensity of beam

Computed radiography(CR)

Image receptors

Requires reader

Cassette places into reader

Digital radiography (DR)

Special tables and upright devices

Built in radiation receptors

PACS

Hardware tech used to manage digital images

Receptor exposure optical density

Overall blackness of image

Image contrast

Differences in adjacent structures

Image detail sharpness

Size of pixels

Patient motion

Size and shape distortion

Variation in size and shape

Magnification size