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   Computer-aided beam arrangement based on similar cases in radiation treatment-planning databases for stereotactic lung radiation therapy  
   
نویسنده magome t. ,arimura h. ,shioyama y. ,mizoguchi a. ,tokunaga c. ,nakamura k. ,honda h. ,ohki m. ,toyofuku f. ,hirata h.
منبع journal of radiation research - 2013 - دوره : 54 - شماره : 3 - صفحه:569 -577
چکیده    The purpose of this study was to develop a computer-aided method for determination of beam arrangements based on similar cases in a radiotherapy treatment-planning database for stereotactic lung radiation therapy. similar-case-based beam arrangements were automatically determined based on the following two steps. first,the five most similar cases were searched,based on geometrical features related to the location,size and shape of the planning target volume,lung and spinal cord. second,five beam arrangements of an objective case were automatically determined by registering five similar cases with the objective case,with respect to lung regions,by means of a linear registration technique. for evaluation of the beam arrangements five treatment plans were manually created by applying the beam arrangements determined in the second step to the objective case. the most usable beam arrangement was selected by sorting the five treatment plans based on eight plan evaluation indices,including the d95,mean lung dose and spinal cord maximum dose. we applied the proposed method to 10 test cases,by using an rtp database of 81 cases with lung cancer,and compared the eight plan evaluation indices between the original treatment plan and the corresponding most usable similar-case-based treatment plan. as a result,the proposed method may provide usable beam arrangements,which have no statistically significant differences from the original beam arrangements (p > 0.05) in terms of the eight plan evaluation indices. therefore,the proposed method could be employed as an educational tool for less experienced treatment planners. © 2012 the author 2012.
کلیدواژه Beam arrangements; Computer-assisted method; radiotherapy treatment planning; Similar planning cases; Stereotactic lung radiotherapy
آدرس department of health sciences,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582,japan,japan society for the promotion of science,5-3-1 kojimachi,chiyoda-ku,tokyo 102-0083, Japan, department of health sciences,faculty of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of heavy particle therapy and radiation oncology,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of health sciences,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of health sciences,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of clinical radiology,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of clinical radiology,graduate school of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of health sciences,faculty of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of health sciences,faculty of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan, department of health sciences,faculty of medical sciences,kyushu university,3-1-1 maidashi,higashi-ku,fukuoka 812-8582, Japan
 
     
   
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