ARRT Registry Exam Review Flashcards

These flashcards cover key concepts related to ARRT Registry Exam preparation, enhancing understanding of terms and definitions.

An intravenous injection of a concentrated volume of contrast media.

Bolus

A method that utilizes a detector that captures x-ray energy and converts it into an electronic signal.

Direct capture

An x-ray photon created when an L shell electron fills a K shell vacancy in a tungsten atom.

Characteristic x-ray photon

Position placing the positive contrast agent in the body of the stomach and pylorus during a double contrast upper GI exam.

Recumbent position

Position that best demonstrates the broad aspect of the frontal air sinus.

PA projection

Position that will best demonstrate the right axillary portion of the ribs.

RPO position

Combinations needed in a digital radiography system to produce an image.

x-ray absorber & CCD

Exposure latitude is also known as this.

Dynamic range

Components that are not within the glass/metal enclosure of the x-ray tube.

Stators

Should be practiced on all patients.

Universal precautions

Minimum source to skin distance allowed is 12 inches.

Mobile fluoroscopic unit

Should not receive more than 0.5 rem for the duration of pregnancy.

Pregnant technologists

A measure of the biological effects of radiation based on the absorbed dose and the type of radiation involved.

Effective Dose

The SI unit of measure for Effective Dose (EfD).

Sievert

Radiation produced when electrons from the filament interact with K shell electrons.

Characteristic radiation

The SI unit for absorbed dose.

Gray (Gy)

Interaction that produces a characteristic photon.

Photoelectric absorption

Interaction that results in scattered radiation.

Compton scattering

The dose that kills 50% of the exposed population, typically around 4.5 - 5 Gray for humans.

LD50

The establishment and growth of microorganisms on or in a host.

Infection Control

Nil per os, a medical instruction meaning to withhold all food and liquids.

NPO