21 Chapter 5 Recommendations conclusion 15 Recommendations and Conclusion

21 chapter 5 recommendations conclusion 15

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Chapter 5 Recommendations, conclusion 1.5 Recommendations and Conclusion Cobalt 60 machine is an old machine in teletherapy, it considered as conventional treatment method. Now days it become confined to palliative treatment. The hazard of this radioactive source is come from the continuous emitting of photons even if it is off, so more time and short distant means more dose. The most dangerous case when the source not turned back to its shielding house ,this result in radiation accident which exposed workers and patient to high doses may exceed the maximum permissible dose so based on the above reasons: a. Radiation workers must use personal detectors to know their annual doses b. The importance of RPO Radiation Protection Officer in every department deal with radiation to control emergency situation. c. Radiation department position must be suitable in a way that protect non radiation workers and public. d. Workers must be well trained. e. Causative factors off accidents and errors must be examples of learning to avoid repetitions. I -22-
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References AB.Wolbas (1999): Physics of Radiology ,radquantities, second edition. Glenn F Knoll (2000):. Radiation Detection and Measurement, third edition. Lewis, Wilfrid Bennett (1997):Atomic Energy Division , Canadian National Research Council Paul Litt(2000): Isotopes and Innovation, MDS Nordion>s first 50 Years, McGiU- Queen>s University Press. Sandeep Kaur Dhanesar (April2008): Conformal Radiation Therapy with Cobalt-60 Tomotherapy, Queen>s University, Kingston, Ontario.. UNSCEAR (1993): United nation scientific committee on the Effects of Atomic Radiation: Sources and Effects of Ionizing Radiation, Report to General Assembly. UNSCEAR (2000): United nation scientific committee on the Effects of Atomic Radiation: Sources and Effects of Ionizing Radiation, Report to General Assembly. U.V.A Moreas(2000):Environmental Gamma Radiation And Radiation Protection Dosimetry. W.John(2002): The Commemoration of the Development of the Cobalt-60, University of Saskatchewan. -23-
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List of tables Table name page 1. Approximate HVL for Various Materials when ....................................... 10 Radiation is from a Gamma Source 2.1 2. Approximate Half-Value Layer for Various Materials when ................... 10 Radiation is from an X-ray Source 2.2 3. Measurements at (off-position) of the source 3.1 ................................. 19 4. Measurements at (on-position) of the source 3.2 ................................ 20 c -24-
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