İsmail Hakkı SARPÜN, Cengiz ÖZSOY, Vedat AYDIN, Timur KOCA

CT Taramalarında Hastanın kilosuna göre alınan dozun değişimi

Tüm radyoterapi işlemi sırasında çekilen Bilgisayarlı Tomografi (BT) görüntüleri, tedavi portalı tasarımı, planlaması ve hasta pozisyonunun sağlanması için önemlidir. Ancak bu BT taramalarında hastanın aldığı doz, planlama doz hesaplamalarına dahil edilmez. Özellikle adaptif tedavilerde kritik organların limit dozlarının hesaplanmasında günlük BT taramalarından alınan doz çok önemli hale gelmektedir. Bu çalışmada, Monte Carlo tekniğinin kullanıldığı NCICT kodu ile hastaların bazı kritik organları olan kalp ve karaciğerin aldığı dozun hastanın ağırlığına göre değişimi araştırıldı.

Anahtar Kelimeler:

CT, Phantom, NCICT, Monte Carlo

Variation of the Absorbed Dose by the Weight of the Patient in CT Scanning

Computed Tomography (CT) images taken during whole radiotherapy procedure is important for treatment planning, portal design and providing patient position. However, the dose received by the patient in these CT scans are not included in the planning dose calculations. Especially in adaptive treatments, the dose received from daily CT scan becomes very important in calculation of the limit doses of critical organs. In this study, with the NCICT code, which use the Monte Carlo technique, the change of the dose absorbed by some critical organs of the patients, namely the heart and liver, according to the weight of the patient, was investigated.

Keywords:

CT, Phantom, NCICT, Monte Carlo,

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