CT dosimetry phantom definition

CT dosimetry phantom means the phantom used for determination of the dose delivered by a CT x-ray system. The phantom shall be a right circular cylinder of polymethl-methacrylate of density 1.19±0.01 grams per cubic centi- meter. The phantom shall be at least 14 centimeters in length and shall have diameters of 32.0 centimeters for test- ing any CT system designed to image any section of the body (whole body scanners) and 16.0 centimeters for any system designed to image the head (head scanners) or for any whole body scanner operated in the head scanning mode. The phantom shall provide means for the placement of a dosim- eter(s) along its axis of rotation and along a line parallel to the axis of rota- tion 1.0 centimeter from the outer sur- face and within the phantom. Means for the placement of a dosimeter(s) or alignment device at other locations may be provided for convenience. The means used for placement of a dosim- eter(s) (i.e., hole size) and the type of dosimeter(s) used is at the discretion of the manufacturer. Any effect on the doses measured due to the removal of phantom material to accommodate dosimeters shall be accounted for through appropriate corrections to the reported data or included in the state- ment of maximum deviation for the values obtained using the phantom.
CT dosimetry phantom means the phantom used for determination of the dose delivered by a CT x-ray system. The phantom must be a right circular cylinder of polymethyl-methacrylate of density 1.19±0.01 grams per cubic centimeter. Except for pediatric dose measurements, the phantom must be at least 14 centimeters in length and must have diameters of 32.0 centimeters for testing any CT system designed to image any section of the body (whole body scanners) and 16.0 centimeters for any system designed to image the head (head scanners) or for any whole body scanner operated in the head scanning mode. The phantom must provide means for the placement of a dosimeter along its axis of rotation and along a line parallel to the axis of rotation 1.0 centimeter from the outer surface and within the phantom.
CT dosimetry phantom means an object used to determine the dose delivered by a CT X-ray system.

Examples of CT dosimetry phantom in a sentence

  • The following dose information obtained by using the CT dosimetry phantom.

  • The angular position where the maximum surface CTDI occurs shall be identified to allow for reproducible positioning of a CT dosimetry phantom.

  • The CT dosimetry phantom shall be oriented so that the measurement point 1.0 centimeter from the outer surface and within the phantom is in the same angular position within the gantry as the point of maximum surface CTDI identified.

  • Paediatric CT reference doses based on weight and CT dosimetry phantom size: local experience using a 64-slice CT scanner.

  • Utilizing a simple CT dosimetry phantom for the comprehension of the operational characteristics of CT AEC systems.

  • CTDI100 is acquired using a 100-mm long, 3-cc active volume CT “pencil” ionization chamber and the two standard CTDI acrylic phantoms (16 and 32 cm diameter) and a stationary patient table.* * * * * CT dosimetry phantom - The phantom used for determination of the dose delivered by a CT X-ray system.

  • Two CT dosimetry phantom sizes are therefore not required, and our findings support the need to reassess the role, if any, of current cylindrical acrylic dosimetry phantoms.

  • The CT dosimetry phantom shall be oriented so that the measurement point 1 centimeter from the outer surface and within the phantom is in the same angular position within the gantry as the point of maximum surface CTDI identified.

  • Weighted computed tomography dose index over a singleslice in a CT dosimetry phantom was calculated as the sum of 2/3 of theperipheral dose and 1/3 of central dose.

  • The CT dosimetry phantom shall be oriented so that the measurement point 1.0 centimeter from the outer surface and within the phantom is in the same angular position within the gantry at the point of maximum surface exposure identified.


More Definitions of CT dosimetry phantom

CT dosimetry phantom means the phantom used for determination of the dose delivered by a CT x-ray system. The phantom shall be a right circular cylinder of polymethl-methacrylate of density 1.19±0.01 grams per cubic centimeter. The phantom shall be at least 14 centimeters in length and shall have diameters of 32.0 centimeters for testing any CT system designed to image any section of the body (whole body scanners) and
CT dosimetry phantom means an object used for determination of the dose delivered by a CT x-ray system.
CT dosimetry phantom means the phantom used for determination of the dose delivered by a CT x-ray system. The phantom shall be a right circular cylinder of polymethl-methacrylate of density 1.19±0.01 grams per cubic centimeter. The phantom shall be at least 14 centimeters in length and shall have diameters of 32.0 centimeters for testing any CT system designed to image any section of the body (whole body scanners) and 16.0 centimeters for any system designed to image the head (head scanners) or for any whole body scanner operated in the head scanning mode. The phantom shall provide means

Related to CT dosimetry phantom

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