midterms

Algorithms

Mathematical formulas used by computers to construct digital radiographic images.

Barium Platinocyanide

Substance which coated the photographic plates used by Roentgen in the discovery of x-rays.

Computer memory

Area of computer where information is stored.

Computed tomography

Radiographic cross-sectional electronically created image that uses a very small beam of radiation.

Cyclotron

Invented by Ernest Lawrence in 1932, it is a chamber that made it possible to accelerate particles to high speeds for use as projectiles.

Diagnostic medical sonography

Diagnosis of a disease process, or the imaging of a certain condition such as pregnancy, by the administration of high-frequency, non-ionizing sound waves.

Digital radiography

See digital imaging.

Fluoroscopy

A procedure using x-rays to image inner parts of the body in movement and motion.

Interventional radiology

Subspecialty of special procedures that aids in patient treatment by replacing surgery or complementing the surgical process; certification by the American Registry of Radiologic Technologists.

Radioactivity

The property of certain elements to emit rays or subatomic particles spontaneously from matter.

Microprocessor speed

Speed at which a computer can perform calculations.

Nuclear radiology

The branch of radiology using radioactive materials for medical diagnosis and treatment.

Magnetic resonance imaging

Cross-sectional, three-dimensional imaging modality that creates digital images by the use of a strong magnetic field and radio waves instead of radiation.

Anna Bertha Roentgen

She was the first person to undergo x-ray. Wife of Wilhelm Roentgen, discoverer of x-rays; her hand was the first human x-ray image ever produced.

Prof. Wilhelm Condrad Roentgen

Physicist and mathematician who discovered x-rays on November 8, 1895.

Johann Wilhelm Hittorf

Conducted several experiments with cathode rays, which are streams of electrons emitted from the surface of a cathode.

Thomas Edison

Conducted extensive research in electricity as well as inventing fluoroscopy.

William Crookes

Furthered the study of cathode rays and demonstrated that matter was emitted from the cathode with enough energy to rotate a wheel placed within a tube.

Barium Platinocyanide

Luminescent material used by Roentgen.

Phosphorescence

Afterglow/screen lag; lights up after exposure; used in x-ray.

Fluorescence

Lights up during exposure.

Serendipity

Accidental discovery.

1st radiographic image

Hand of Anna Bertha Ludwig (-Roentgen).

Curie

Unit of radioactivity, based on Marie Curie.

Lead

Coated throughout the room. It is a metal containing high atomic number. Has the ability to absorb greater radiation.

Trefoil

International radiation symbol.

Exposure Area

Where x-ray happens.

kVp

Kilovoltage Peak; maximum voltage to be applied in the x-ray tube.

mAs

Milliampere-seconds; current in the x-ray tube at the time of exposure.

Travel time of radiation

Less than 1 second.

Dark room adaptation

Heightening dark vision once the room is completely blacked out.

High Voltage Generator

Location of circuits and transformer that generates the electricity needed for the x-ray process.

Operating Console

Also called control panel; it is where we control and set technical factors to operate the x-ray machine; can be analog/digital.

X-ray Table

Where the patient is positioned; made of low atomic material; carbon fiber.

Radiographic Cassette

Where film is inserted and is placed in bucky tray; has different sizes.

Portable x-ray machine

For patients incapable of walking.

Negatoscope

Device used in deciphering/examining the film.

Pass box

Place where the film is passed through the dark room.

Processing tanks

Has developer and fixer chemicals.

Film dryer

Films are clipped in film hanger and are placed here to dry.

Movable lead barrier

Made up of lead (even the glass); reduce/absorb exposure.

Red light

Indicates exposure.