Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Megavoltage computed tomography (MVCT) dose assessment at different depths
RAD Conference Proceedings · Şubat 2019
YÖKSİS Kayıtları
MEGAVOLTAGE COMPUTED TOMOGRAPHY (MVCT) DOSE ASSESSMENT AT DIFFERENT DEPTHS
RAD Association · 2019 SCOPUS
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Makale Bilgileri
DergiRAD Conference Proceedings
Yayın TarihiŞubat 2019
Cilt / Sayfa3 · 169-173
Scopus ID2-s2.0-85070687298
Erişim🔓 Açık Erişim
Özet
The aim of the study is to evaluate the point doses measured by different parameters at various depths with MVCT in the Tomotherapy Hi- Art (HT) treatment unit. HT works in two modes: visual modes and therapy modes. The MVCT images are taken in the visual mode. The user can choose the scan length and image pitch value in the visual mode. The system has pitch values called fine, normal and coarse. When the same volume is scanned during the gentry rotation, the scan times of fine, normal, and coarse modes are different from one another. Cheese Phantom is used to evaluate the point doses. The measured values ranged from 0.64 to 2.67 cGy with an average dose of 1.40cGy. The lowest MVCT dose is found when 7 slices are scanned with a depth of 20 cm for 51 seconds. The highest MVCT dose is found when 17 slices are scanned with a depth of 15 cm for 101 seconds. The measured values are the highest when the fine mode is selected with low depth and high slice. The IGRT method is used before each treatment and can be used more than once if necessary. Therefore, the right mode selection can prevent taking unnecessary doses during MVCT.
Yazarlar (2)
1
Sibel Karaca
ORCID: 0000-0003-0957-3932
2
Hamit Basaran
Anahtar Kelimeler
Different depths
Dose
MVCT
Tomotherapy
Kurumlar
Erzurum Bölge Eğitim ve Araştırma Hastanesi
Erzurum Turkey
Metrikler
1
Atıf
2
Yazar
4
Anahtar Kelime