TSD


Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.

TSD

Tay-Sachs disease.

distance

(dis'tans) [L. distantia, remoteness]
The space between two objects.

focal distance

In ophthalmology, the distance from the optical center of a lens to the focal point.

focal-film distance

Abbreviation: FFD
Focus-film distance.

focus-film distance

Abbreviation: FFD
In radiography, an obsolete term for source-to-image receptor distance.
Synonym: focal-film distance See: source-to-image receptor distance

hearing distance

The distance at which a given sound can be heard.

infinite distance

1. A distance without limits.
2. In ophthalmology, the assumption that the light rays coming from a point of a distance beyond 20 ft (6.1 m) are practically parallel and accommodation is unnecessary.

interocclusal distance

The distance between the occlusal surfaces of opposed teeth when the mandible is at rest.

interocular distance

In ophthalmology, the distance between the eyes.
See: hypertelorism

interpupillary distance

In ophthalmology, the distance between the centers of the pupils of the eyes.

margin crease distance

In ophthalmology, the height that the crease of the eyelid sits above the upper eyelid margin when the eye is positioned in primary gaze.

object-film distance

Abbreviation: OFD
In radiography, an obsolete term for object-image receptor distance.

object-image receptor distance

Abbreviation: OID
In radiography, the distance between the anatomical structure to be imaged and the radiographic image receptor.

source-object distance

Abbreviation: SOD
In radiography, the distance between a source of radiation and the object that it images or radiates.

source-skin distance

In radiography, the distance from a radiation source to a patient's skin.

source-to-image receptor distance

Abbreviation: SID
In radiography, the distance from the x-ray tube to the radiographical film or the image receptor.

target-skin distance

Abbreviation: TSD
1. In radiography, the distance from the source of radiation to the point where the beam enters the patient.
2. In radiation therapy, a common value used for determination of the depth at which the treatment time is calculated.

target-skin distance

Abbreviation: TSD
1. In radiography, the distance from the source of radiation to the point where the beam enters the patient.
2. In radiation therapy, a common value used for determination of the depth at which the treatment time is calculated.
See also: distance
References in periodicals archive ?
TSD rallying is like a game of chess, its all about the strategy and keeping calm while under pressure to avoid making mistakes.
Using a much larger study population and including analyses for additional mutations, we have expanded our studies of TSD carrier frequencies among persons of French Canadian background living in New England.
In an attempt to exclude nonaggressive tax transactions from the disclosure requirements, the TSD regulations include four exceptions for transactions that would otherwise fall into the other reportable transaction category.
Foundries can accidentally become RCRA TSDS subject to the Corrective Action program by:
Orbital TSD personnel will conduct balloon missions from locations in the US and around the world, with flight rates of approximately 15 per year.
The TSD - which reported directly to Gen VK Singh - used secret service funds to initiate a PIL against current chief General Bikram Singh.
Further, a demonstration must be submitted to the EPa and the TSD with complete documentation, including names and places, that corroborates unsuccessful tests and searches made to discover satisfactory disposal, destruction or recovery treatments.
TSD Organic, made from certified organic cotton which means no pesticides, synthetic fertilizers or genetically engineered seeds are used when farming the cotton.
The pair point out that fourteen of the twenty diverse fish genera previously reported as having TSD in fact have sex chromosomes, and that it takes unnatural temperatures found only in the laboratory to masculinize their genetic females.
The new TSD, which the agency has bought from Denmark for about pounds 1m, can reach speeds of up to 50mph.
Hatchling sex ratios resulting from TSD are also of conservational and ecological interest, since they can affect the recovery of endangered populations.
His depth of experience in business development and bringing successful products to the global marketplace offers a tremendous and timely addition as TSD becomes our largest division and pursues its future growth opportunities.