Organs at risk with the maximum dose, minimum dose, mean dose, D, conformity index (CI) and homogeneity index (HI) and total monitor unit (MU) in the PTV area were compared in terms of the ipsilateral lung ([V.sub.5], [V.sub.10], [V.sub.20] and [V.sub.30] and mean dose), heart (max, min, mean, [D.sub.33], [V.sub.25] and [V.sub.10]) and
dosimetric parameters (max, min, mean, [D.sub.5] and [V.sub.5]).
There was no difference in
dosimetric measurements at either the surface or the 2-cm depth with or without a 1- to 2-mm application of either topical agent when using en face 6- or 15-megavoltage (MV) photons.
Bhat, Effect of I3 irradiation on polyvinyl alcohol films doped with some dyes and their use in
dosimetric studies.
The
dosimetric criterion of the plan is [V.sub.95%Rx] [greater than or equal to] 95%, which means that the 95% of the PTV should receive more than 95% of the prescription dose.
(5.) Mariados N, Sylvester J, Shah D, et al: Hydrogel Spacer Prospective Multicenter Randomized Controlled Pivotal Trial:
Dosimetric and Clinical Effects of Perirectal Spacer Application in Men Undergoing Prostate Image Guided Intensity Modulated Radiation Therapy.
Formation of neutron fields from radionuclide neutron sources for metrological support of
dosimetric quantities measurements.
Clinical and
dosimetric predictors of late rectal syndrome after 3D-CRT for localized prostate cancer: Preliminary results of a multicenter prospective study.
Moreover, for the 10 patients, even the parotid glands were contoured, one did not impose
dosimetric constraints on them as critical structures.
One of the main goals of the QA procedures is to minimize errors related to dose delivery, which can be prevented using radiation detectors, such as ionization chambers,
dosimetric Alms, or semiconductor detectors.
Patients with small remnants and high uptakes may receive a large radiation dose from 30 mCi whereas those with large remnants and low uptakes may receive a small and inadequate radiation dose from 150 mCig In a 1983
dosimetric study, Becker and Hurley demonstrated a wide variation in uptake and remnant size in patients who were referred for ablation (10).
Two-sided paired f-tests were used for
dosimetric comparisons of standard plans and ovary-sparing plans to assess differences in mean bilateral, ipsilateral, and contralateral ovary doses, mean bone dose, bone V50 (volume of bone receiving at least 50 Gy), and conformity index (CI) defined as 100% isodose volume divided by target volume [11].
