Category: S

In radiography, the reduction of exposed silver halide crystals to black metallic silver, creating a visible image. In instances of multifetal pregnancy, a medical practice commonly known as selective reduction comes into play. This procedure involves the deliberate termination of one or more fetuses, aimed at safeguarding the viability of the remaining fetuses and mitigating…

Limiting the quantity of sodium chloride in the diet, usually as a means of lowering blood pressure or preventing fluid retention.  

A red azo dye used to stimulate healing of indolent ulcers, burns, wounds, and so on; in histology, used as a stain.  

A small space in the nasal fossa above the superior concha. It lies between the ethmoid bone and the anterior surface of the body of the sphenoid bone and posteriorly receives the opening of the sphenoidal sinus.  

The rejoining of structures, especially vessels or tubes, that had been previously ligated.  

X-ray photons produced after the incoming, primary x-ray photons remove an inner-shell electron from the atom. They are of lower energy than the primary radiation and usually are absorbed in matter.  

The time rate at which electromagnetic energy is absorbed by a kilogram of tissue, usually expressed as the heat absorbed by the tissue, or as the power absorbed per unit of mass.  

A macular rash resembling the reddened skin characteristic of a severe sunburn.  

A pruritic, hive like rash(urticuria or angioedema) or a vasculitis (palpable purpura) that accompanies serum sickness, which usually is caused by a hypersensitivity reaction to drugs or immune globulins obtained from animals. Malaise, joint pains, fevers, and other symptoms may accompany the rash.  

Radiation released by charged particles accelerated by a synchrotron. It may be used to obtain noninvasive images of body structures (e.g., the coronary arteries) or to study the structure of proteins, tissue samples, or other objects of biological or medical interest.