Field-flattening filter definition

Field-flattening filter means a filter used to homogenize the absorbed dose rate over the radiation field.
Field-flattening filter means a filter used to provide dose uniformity over the area of a useful beam of x-rays at a specified depth.
Field-flattening filter means a filter used to homogenize the absorbed dose rate over the radiation field. “Filter diagnostic” means material placed in the useful beam to preferentially absorb selected radiations.

More Definitions of Field-flattening filter

Field-flattening filter means a filter used to provide dose
Field-flattening filter means a filter used to homogenize the absorbed dose rate over the radiation field. "Filter" means material placed in the useful beam to change beam quality in therapeutic radiation machines subject to 6.4.
Field-flattening filter means a filter used to homogenize the absorbed

Related to Field-flattening filter

  • HEPA filter means a high efficiency particulate absolute air filter capable of trapping and retaining 99.97 percent of fibers greater than 0.3 micrometers in mass median aerodynamic diameter equivalent.

  • Seaplane means an aeroplane capable normally of taking off from and alighting solely on water;

  • manoeuvring area means that part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons;

  • Cyanoacrylate adhesive means any adhesive with a cyanoacrylate content of at least 95% by weight.

  • Tight-fitting facepiece means a respiratory inlet covering that forms a complete seal with the face.

  • Roomer means a person occupying a dwelling unit that lacks a major bathroom or kitchen facility, in a structure where one or more major facilities are used in common by occupants of the dwelling unit and other dwelling units. Major facility in the case of a bathroom means toilet, or either a bath or shower, and in the case of a kitchen means refrigerator, stove or sink.

  • Medical Specialist means any medical practitioner who is vocationally registered by the Medical Council under the Health Practitioners Competence Assurance Act 2003 in one of the approved branches of medicine and who is employed in either that branch of medicine or in a similar capacity with minimal oversight.

  • Drug outlet means a pharmacy, nursing home, shelter home, convalescent home, extended care facility, drug abuse treatment center, penal institution, hospital, family planning clinic, student health center, retail store, wholesaler, manufacturer, mail-order vendor or other establishment with facilities located within or out of this state that is engaged in dispensing, delivery or distribution of drugs within this state.

  • Grab sample means an individual sample collected in less than 15 minutes in conjunction with an instantaneous flow measurement.

  • Nail technician means any person who for compensation manicures or pedicures natural nails, or who performs artificial nail services for compensation, or any combination thereof.

  • Dynamic driving task means the same as that term is defined in Section 41-26-102.1.

  • Assistive technology service means any service that directly assists a child with a disability in the selection, acquisition, or use of an assistive technology device. The term includes:

  • Samples mean representative physical examples of materials, equipment or workmanship, used to confirm compliance with requirements and/or to establish standards for use in execution of the Work.

  • Cold Weather Alert means the notice that PJM provides to PJM Members, Transmission Owners, resource owners and operators, customers, and regulators to prepare personnel and facilities for expected extreme cold weather conditions.

  • Medical marijuana concentrate means a specific subset of Medical Marijuana that was produced by extracting Cannabinoids from Medical Marijuana. Categories of Medical Marijuana Concentrate include Water-Based Medical Marijuana Concentrate, Food-Based Medical Marijuana Concentrate, Solvent-Based Medical Marijuana Concentrate, and Heat/Pressure- Based Medical Marijuana Concentrate.

  • Field means all fields of use.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.