The Use of Water Phantoms in Quality Control of General X-Ray Machine for Diagnostic Radiology
Abstract
In Malaysia, quality control (QC) measurements on medical diagnostic x-ray machines has to be carried out by a license class H holder, issued by the Ministry of Health under the Atomic Energy Licensing Act 1984. Certain QC measurement procedures for a general purpose diagnostic x-ray machine has to be performed under real clinical conditions which require the use of a phantom as a substitute of a human body. This includes in testing of automatic exposure control (AEC) and in the measurement of scattered radiation. Various types of phantom are used in diagnostic radiology for these purposes. A simple water phantom is introduced to represent an adult patient, which of course, produce interactions with radiation similar to that of a human being. In this paper the significant radiological effect of utilizing the simplified water phantom as compared to already an established phantom used for quality control purposes is investigated and will be presented in brief.
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