Computed tomography dose index definition
Computed tomography dose index means the integral from –7T to +7T of the dose profile along a line perpendicular to the tomographic plane divided by the product of the nominal tomographic section thickness and the number of tomograms produced in a single scan, that is:
Computed tomography dose index. (CTDI) means the average absorbed dose, along the z-axis, from a series of contiguous irradiations. It is measured from one axial CT scan (one rotation of the x-ray tube), and is calculated by dividing the integrated absorbed dose by the nominal total beam collimation. The scattering media for CTDI consist of two (16 and 32 cm in diameter) polymethylmethacrylate (PMMA, e.g., acrylic or Lucite) cylinders of 14 cm length. The equation is:
Computed tomography dose index means the integral from
More Definitions of Computed tomography dose index
Computed tomography dose index. (CTDI) means the average absorbed dose, along the z-axis, from a series of contiguous irradiations. It is measured from one axial CT scan (one rotation of the x-ray tube), and is calculated by dividing the integrated absorbed dose by the nominal total beam collimation. The scattering
Computed tomography dose index or "CTDI" means the integral of the dose profile along a line perpendicular to the tomographic plane divided by the product of the nominal tomographic section thickness and the number of tomograms produced in a single scan.
Computed tomography dose index means the integral from -7T to +7T of the dose profile along a line
Computed tomography dose index. (CTDI) means the integral of the dose profile along a line perpendicular to the tomographic plane divided by the product of the nominal tomographic section thickness and the number of tomograms produced in a single scan where the dose profile is centered around z = 0 and for a multiple tomogram system, the scan increment between adjacent scans is nT;
Computed tomography dose index means the integral from -7T to
Computed tomography dose index. (CTDI) means the integral
Computed tomography dose index or "CTDI" means a standardized measure of radiation dose output of a CT scanner which allows the user to compare radiation output of different CT scanners.