isodose


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Related to isodose: isodose curve

isodose

(ˈaɪsəʊˌdəʊs)
n
(Medicine) med a dose of radiation applied to a part of the body in radiotherapy that is equal to the dose applied to a different part
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sup][26] The American Brachytherapy Society recommends three steps for the assessment of the quality of implantation of [sup]125I seeds:[sup][27] (i) review distribution of the isodose to offer the most direct assessment of dose coverage; (ii) generate a DVH to obtain volumetric parameters; (iii) determine the CN and HI to evaluate the dosimetric quality of the brachytherapy plan (which may be of value in assessment of the future clinical outcomes).
Approximately pear shape isodose curves were obtained for both applicators.
A total of 11 TLD chips were irradiated with 100 cGy in 3 birds with 100% isodose line.
The Cyberknife delivers isodose profiles directly to the prostate tumor, utilizing 1) a rapid dose fall-off for adjacent non-target structures and 2) real-time image guidance during radiation delivery to correct for the translational and rotational changes in the prostate gland position.
The HI = D [sub]max /prescribed dose, where D [sub]max is the maximum dose, while CI = prescription isodose volume (PIV)/tumor isodose volume (TIV), where PIV is the total three-dimensional volume of the isodose line and TIV is the tumor volume covered by the isodose volume.
The median marginal dose to the schwannoma was 13Gy (range 8-20), maximum dose to the schwannoma was 24Gy (range 16-40), and median 50% isodose line was 50% (range 15-100).
Surprisingly, measurement trends for dosimeters from the unprotected group diverged from each other even within an isodose group.
Radiation oncologists can use Mobile MIM to review dose volume histograms, isodose curves, contours, and images for treatment plans actions commonly restricted to a limited number of dedicated workstations.
This could be much faster and more accurate than the radiation isodose plotting that was required in the earlier days of civil defense operations, in which human monitors were needed to go into radiation fields and radio back their readings as they walked through designated areas.
2 Gy was delivered in 34 fractions, with the treatment dose normalized to a 90% maximum isodose line.