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academies
February 25-26, 2019 | Paris, France
13
th
World Cancer Congress
Journal of Medical Oncology and Therapeutics | Volume 4
Skin radiation dose measurement of estimation of radiation-induced Cancer in Head and Neck Cancer
External Beam Radiotherapy
Khalid Alzimami
King Saud University, Saudi Arabia
P
atient dosimetry (In vivo dosimetry) is used to assess the
clinical outcome and to identify main treatment errors, to
evaluate the variations between delivered and planned Head
and neck anatomical region involve critical radiosensitive organs
Therefore, patient dose evaluation is imperative.
The purpose of this study are to measure radiation dose for
patient during head and neck cancer treatment for thyroid and
skin and to estimate the probability of radiogenic risks.
Thermoluminescent dosimeters (TLD100) chips were used
using radiation energy of 6 MV photon beams ELEKTA linear
accelerator The measurements were performed per field and
for two fields A total of 32 patients were evaluated during six
months. The TLD chips, TLD reader and the accelerators were
calibrated according to the IAEA protocol.
The measured entrance dose for the different patients for
6 MV beams is found to be within the 31 compared to the
dose derived from theoretical estimation (normalized dose at
Dmax). An average thyroid skin dose of 37 of the prescribed
dose was measured per treatment session while the mean skin
dose. These results are comparable in those of the in vivo of
reported in literature. The risk of fatality due to thyroid cancer
per treatment course is 42x103.
This result has shown reasonable agreement between
measured and expected doses compared with previous
studies. The risk of skin and thyroid dose due to head and
neck cancer is substantial.
e:
kalzimami@ksu.edu.sa