APPLICATION OF SRT ON LINEAR ACCELERATORS WITHOUT A 6D TABLE

Abstract

Introduction. Over the past few years, the number of linear accelerators in Ukraine has grown significantly, but not a single one has appeared that has a 6D couch for correcting rotational misalignment. Because of this, many doctors are hesitant to perform high-dose SRT treatment regimens. On the other hand, the number of indications for SRT in international protocols is growing every year. Thus, modern aggressive treatment methods are difficult to apply in our realities, since there is little data on the total error caused by rotational error.

Methods. The methods of this study are the determination and evaluation of amplitudes of head rotational errors and their compensation mechanisms for the possibility of SRT on linear accelerators without a 6D couch. This will increase the frequency of SRT use for brain pathologies and improve the effectiveness of radiation therapy for this segment of cancer patients.

Results. The study only considered treatment of brain pathologies. To assess rotational errors, displacement data from 66 patients treated for brain pathologies were analyzed. Therefore, the results cannot be applied to other parts of the body.

Conclusions. The results of the study will allow us to increase the frequency of use of NRT for brain pathologies and improve the effectiveness of radiation therapy for this segment of cancer patients.

References

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