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A tissue (12 cm x 20 cm) was exposed for 0.1 second to an x-ray containing 5×1013 photons. The radiation flux is

The anode of an X-ray tube needs to rotate at a high speed in order to accelerate electrons for X-ray generation.

Photoelectric effect causes tissue absorption of an X-ray.

Visibility of anatomy and signs of pathology depend on the contrast that is produced and displayed in an image.

Bremsstrahlung radiation is produced when incident electrons interact with the inner shell electrons of the atoms in the anode.

The heel effect causes the intensity of an x-ray on the cathode side weaker than the center of the beam.

A collimator of an x-ray tube can be used to control the field of view (FOV).

The thinner the strip of an anti-scatter grid, the better the image quality.

Kathy a 26 year old graduate student is terribly afraid of a number of different situations. She doesn’t like riding on public busses or subways, finds open spaces very intimidating, does not like feeling “lost in a crowd,” and prefers the safe and secure feeling of her own home. If these symptoms cause disruptions in her life, Kathy might be diagnosed with ________.

Describe what rumination is and how it is associated with cognitive theories of depression