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- W2376727850 abstract "Objective:To study the accuracy of repeated positioning using stereotactic frame and thermoplastic body film in IGRT (image guided radiotherapy) and determine the margin between CTV (clinical target volume)and PTV (planning target volume).Methods:Repeated positioning using stereotactic frame (Group A) and thermoplastic body film (Group B) in IGRT,image information was acquired using XVI technique and matched with the reference image information in the treatment planning system.A total of 11 patients were enrolled and evaluable with detailed positioning data.Deviations of X-axis (left-right direction),Y-axis (forward-back direction) and Z-axis (ascending-descending direction) were analyzed.Results:Deviations of group A in X-axis,Y-axis and Z-axis were 0.19±0.23cm,0.4±0.37cm and 0.27±0.26cm;Deviations of group B in X-axis,Y-axis and Z-axis were 0.22±0.18cm,0.46±0.42cm and 0.2±0.19cm.The deviations of group A in X-direction and Y-direction were less than those of group B,but this was not statistically significant ( P 0.05).The deviations of group A in Z-direction was significantly greater than that of group B ( P 0.05).Conclusion:Deviations of repeated positioning using stereotactic frame and thermoplastic body film positioning based on XVI technique in IGRT can be accurately determined;the accuracy of thermoplastic body film positioning is better than that of stereotactic frame positioning." @default.
- W2376727850 created "2016-06-24" @default.
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- W2376727850 date "2010-01-01" @default.
- W2376727850 modified "2023-09-26" @default.
- W2376727850 title "Accuracy analysis of repeated positioning using stereotactic frame and thermoplastic body film based on XVI technique in IGRT" @default.
- W2376727850 hasPublicationYear "2010" @default.
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