In nuclear medicine, yield means the number of measured and processed impulses.

In radiology, the x-ray yield is the percentage of tube power transformed into radiation.
A high amount of the tube power is used to warm up the target. A higher tube voltage results in a linear increased x-ray yield. The transformation of tube power depends also on the atomic number of the target material. The higher the atomic number, the better the x-ray yield. Tungsten (the most common target material) in combination with a tube voltage of 100kv provides an x-ray yield of 0.7%.

(ALARA) 'As low as reasonably achievable' is a precautionary principle that should be part of basic radiation safety considerations in protection to the exposure as well as in other technologies of the medical, the nuclear and the industrial fields.
ALARA is based on three principles: Justification means that possible exposure to humans should yield a sufficient benefit to society to justify the risks of the radiation exposure. The ICRP in 1977 states that 'all exposures shall be kept as low as reasonably achievable, economic and social factors being taken into account'. The radiation exposure must be reduced to the lowest level possible, considering the costs of such a limitation in dose.

(DQA) This procedure is used by system operators to verify an x-ray system, gamma camera, or CT scanner operation based on relevant image quality parameters like e.g., geometric distortion, x-ray yield, signal to noise ratio. The quality assurance should carry out according to instructions of the manufacturer.

See also Acceptance Checking, Calibration and Calibration Factor.

The latitude is the range between the minimum and maximum x-ray exposure to an image receptor that yields a diagnostic image of structures.