Pengaruh Jumlah Segmen, Total Monitor Unit, Volume Tumor dan Jumlah Arah Penyinaran terhadap Delivery Time pada Intensity Modulated Radiation Therapy (IMRT) Kanker Otak: Studi Observasi di RS Ken Saras

Abstract

Background: Intensity Modulated Radiation Therapy allows for more precise treatment but has challenges,

namely, long delivery times. Delivery time in IMRT is influenced by parameters such as the number of

segments, total monitor units, tumor volume, and the number of beam angle; in the radiotherapy installation

of Ken Saras Hospital in making IMRT planning focuses on planning quality. IMRT planning parameters

that affect delivery time have never been studied before. The purpose of this study is to determine the effect

of the number of segments, total monitor units, tumor volume, and number of beam angle on IMRT delivery

time in brain cancer.

Methods: this study is analytical observational, sample patient data from January 2022 to December 2023,

data samples totaled 30 brain cancer patients, data analysis using statistics tests.

Results: The results of the study show that the independent variables affect the dependent variable in brain

cancer. First significant parameter is the number of beam angle with coefficients value of (+) 11.403, which

means that the addition of 1 number of beam angle will increase the delivery time value by 11.403. Second

parameter is the number of segments with coefficients value of (+) 4.406, this means that the addition of 1

number of segments will increase the delivery time value by 4.406. Third parameter is tumour volume with

coefficients value of 0.121.

Conclusions: The results showed that the parameters significantly affect the delivery time of IMRT in brain

cancer are number of segments, tumor volume and number of beam angle.