SCRIT FLASHCARD

Front

In computed radiography (CR), which material is used in the imaging plate to store energy? Options: Selenium, Cesium iodide, Gadolinium oxysulfide.

Back

Barium fluorohalide

Front

Observe the video demonstrating a type of X-ray interaction. Which of the following best describes the interaction shown? Photoelectric effect, Compton scattering, Pair production, Coherent scattering

Back

Photoelectric effect

Front

An X-ray imaging system draws a current of 80 A and is supplied with a voltage of 220 V. What is the power consumed by the system?

Back

17.6 kW

Front

What is the primary function of a relay in an X-ray circuit?

Back

Control high voltage using a low-power signal

Front

Which type of relay is preferred in modern X-ray circuits due to its faster response time and longer lifespan? Options: Electromechanical relay, Solid-state relay, Thermal relay, Overcurrent relay

Back

Solid-state relay

Front

Who is credited with developing the first mobile X-ray units used during World War I?

Back

Marie Curie

Front

At 7.0 Tesla, what is the Larmor frequency of Hydrogen-1?

Back

298.1 MHz

Front

What primarily determines the speed and sensitivity of an X-ray film? Options: Kilovoltage applied, Thickness of the patient, Size of silver halide crystals and emulsion thickness, Developer temperature

Back

Size of silver halide crystals and emulsion thickness

Front

The "black blood" technique in cardiac MRI helps visualize:

Back

Myocardial walls without blood signal

Front

The "string sign" seen during a barium study indicates which condition?

Back

Crohn’s disease