Background: The success of radiation therapy depends on accurate dose delivery to the target. Diode in vivo measurement of entrance and exit dose is a valuable quality assurance (QA) tool to ensure accurate dose delivery.  Materials and Methods: This study was performed at BINO Cancer Hospital, Bahawalpur. Entrance and exit dose measurements were done with p-type diode for various types of canc...

the rotor of enegelberg whitener was equipped with a screw conveyor to reduce broken rice percentage. according to preliminary experiments this modification could reduce broken rice percentage about 2.5%. further experiment was performed to determine the effect of rotor speeds and blade positions on white rice quality. to do this, five rotor speeds, consisting 500, 600, 700, 800 and 900 r.p.m a...

Background. Success of radiotherapy relies on accurate dose delivery. In vivo dosimetry improves control of treatment quality. Patients and methods. In vivo dosimetry with commercial diodes was performed in 209 rectal cancer patients treated with four-field box technique. The diodes measured either entrance or exit dose in each treatment field. The results were compared to the planned values an...

abstract background: in vivo measurements of applied dose during radiotherapy treatment, is important to ensure accurate dose delivery to patients. uncertainty in dose delivery should fall within ±5% of the prescribed dose as recommended by icru. assessment of dose for radiotherapy applications performed with various types of detectors. in this study, semiconductor diodes were used which have s...

ABSTRACT Background: In vivo measurements of applied dose during radiotherapy treatment, is important to ensure accurate dose delivery to patients. Uncertainty in dose delivery should fall within ±5% of the prescribed dose as recommended by ICRU. Assessment of dose for radiotherapy applications performed with various types of detectors. In this study, semiconductor diodes were used which have s...

introduction: during radiotherapy, high accuracy in the dose delivery is required because there is a strong  relationship between the absorbed dose, local tumor control and particularly the normal tissue damage. in  many institutions, in vivo dosimetry using diodes is performed to check the actual dose delivered. in general,  the uncertainty in the dose delivered should fall within  ± 5% of the...

found that could not be detected at the exit. For instance, no barium but lead and antimony could be found at the exit. The large sized particles found in the exit wound, however, point to these being derived from the bullet rather than GSR. Smaller spherical particles were found on the entrance, but bigger and more irregular particles were detected at the exit. This suggests that most of the p...