Layers of films
What is the primary function of the polyester base in radiographic film?
A. Enhance image contrast
B. Prevent fogging
C. Provide support for the emulsion layer
D. Increase radiation sensitivity
C. Provide support for the emulsion layer
What is the smallest country in the world by area?
A. Monaco
B. Vatican City
C. Liechtenstein
D. San Marino
B. Vatican City
In which country were the Olympic Games first held in ancient times?
A. Italy
B. Greece
C. Egypt
D. Turkey
B. Greece
Which animal is known as the symbol of Australia?
A. Koala
B. Kangaroo
C. Platypus
D. Emu
B. Kangaroo
Why should hands be clean and free of lotions or oils before handling film?
A. To avoid fogging
B. To prevent blurring
C. To avoid fingerprint artifacts
D. To reduce contrast
C. To avoid fingerprint artifacts
What is the function of the super coat layer on radiographic film?
A. To enhance exposure to light
B. To protect the emulsion from damage
C. To increase image sharpness
D. To prevent x-ray absorption
B. To protect the emulsion from damage
What is the purpose of a densitometer?
A. To measure film thickness
B. To evaluate optical density
C. To produce uniform exposure
D. To measure humidity in storage rooms
B. To evaluate optical density
Which film type is used to produce copies of radiographs?
A. Hard copy film
B. Mammographic film
C. Digital receptor film
D. Duplication film
D. Duplication film
What is the recommended temperature for storing radiographic film?
A. Above 30°C
B. Below 20°C
C. At room temperature
D. Below 10°C
B. Below 20°C
What is the most spoken language in the world by number of native speakers?
A. English
B. Spanish
C. Hindi
D. Mandarin Chinese
D. Mandarin Chinese
What is the ‘latent image’ on a radiographic film?
A. A visible image before development
B. An image formed after scanning
C. An invisible image formed by radiation exposure
D. A distorted image caused by artifacts
C. An invisible image formed by radiation exposure
What is the primary use of a sensitometer in radiographic quality control?
A. To measure patient dose
B. To expose film to x-rays
C. To expose film to uniform light
D. To calibrate intensifying screens
C. To expose film to uniform light
What causes the crossover effect in double-emulsion film?
A. Light scattering within gelatin
B. Silver halide overexposure
C. Light passing from one screen to the opposite emulsion
D. Emulsion thickening
C. Light passing from one screen to the opposite emulsion
Why should radiographic film be stored on its end rather than flat?
A. To reduce exposure to light
B. To avoid pressure and abrasion artifacts
C. To prevent emulsion hardening
D. To maintain humidity
B. To avoid pressure and abrasion artifacts
Why is it important to follow expiration dates on film boxes?
A. To maintain emulsion thickness
B. To prevent radiation overexposure
C. To avoid image distortion
D. To ensure image quality and avoid fogging
D. To ensure image quality and avoid fogging