کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1881987 | 1043187 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of radiosurgery techniques-Cone-based linac radiosurgery vs tomotherapy-based radiosurgery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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![عکس صفحه اول مقاله: Evaluation of radiosurgery techniques-Cone-based linac radiosurgery vs tomotherapy-based radiosurgery Evaluation of radiosurgery techniques-Cone-based linac radiosurgery vs tomotherapy-based radiosurgery](/preview/png/1881987.png)
چکیده انگلیسی
Performances of radiosurgery of intracranial lesions between cone-based Linac system and Tomotherapy-based system were compared in terms of dosimetry and time. Twelve patients with single intracranial lesion treated with cone-based Linac radiosurgery system from 2005 to 2009 were replanned for Tomotherapy-based radiosurgery treatment. The conformity index, homogeneity index (HI), and gradient score index (GSI) of each case was calculated. The Wilcoxon matched-pair test was used to compare the 3 indices between both systems. The cases with regular target (n = 6) and those with irregular target (n = 6) were further analyzed separately. The estimated treatment time between both systems was also compared. Significant differences were found in HI (p = 0.05) and in GSI (p = 0.03) for the whole group. Cone-based radiosurgery was better in GSI whereas Tomotherapy-based radiosurgery was better in HI. Cone-based radiosurgery was better in conformity index (p = 0.03) and GSI (p = 0.03) for regular targets, whereas Tomotherapy-based radiosurgery system performed significantly better in HI (p = 0.03) for irregular targets. The estimated total treatment time for Tomotherapy-based radiosurgery ranged from 24 minutes to 35 minutes, including 15 minutes of pretreatment megavoltage computed tomography (MVCT) and image registration, whereas that for cone-based radiosurgery ranged from 15 minutes for 1 isocenter to 75 minutes for 5 isocenters. As a rule of thumb, Tomotherapy-based radiosurgery system should be the first-line treatment for irregular lesions because of better dose homogeneity and shorter treatment time. Cone-based Linac radiosurgery system should be the treatment of choice for regular targets because of the better dose conformity, rapid dose fall-off, and reasonable treatment time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Dosimetry - Volume 38, Issue 2, Summer 2013, Pages 184-189
Journal: Medical Dosimetry - Volume 38, Issue 2, Summer 2013, Pages 184-189
نویسندگان
Ho Yin M.Sc., C.M.D., Wing Lun A. M.Sc., C.M.D., Joseph W.Y. M.Sc., C.M.D., Winky Wing Ki M.Phil, C.M.D., Jocelyn M.T. M.Sc, C.M.D., G. M.H.M., Maria Y.Y. Ph.D.,