DESIGN, CONSTRUCTION AND TESTING OF A LOCALLY ASSEMBLED DENSITOMETER

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dc.contributor.authorDawodu, Oladipupo Muyideen
dc.date.accessioned2017-01-13T13:47:08Z
dc.date.available2017-01-13T13:47:08Z
dc.date.issued2000-09
dc.descriptionA thesis submitted to the Postgraduate School, Ahmadu Bello University, in partial fulfilment of the requirement for the Degree of Master of Science (Radiation Bio-Physics) Department of Physics, Faculty of Science, Ahmadu Bello University, Zaria. Nigeria.en_US
dc.description.abstractIn this work a densitometer was designed and constructed locally, using available materials for quality assurance tests of X-ray machine. A Light Dependent Resistor (LDR) was used to convert light intensity to electrical current. The current, which is proportional to the intensity of light, was measured with a very sensitive digital multimeter. The electric current in LDR when light intensity changes was examined. X-ray films were exposed to various X-ray doses. The optical density of the films was measured with the constructed densitometer. The range of optical densities for low and high doses respectively in radiography was found to be between about 0.35 and 2.5. The base of X-ray films contributes an optical density of about 0.207 + 0.001. Different X-ray films exposed to the same X-ray energy and processed under different condition have different values of optical densities.. The output of X-ray unit was found to be dependent on Currentlime, Film Focus Distance, and Peak kilovollage. The densitometer is easy to operate, giving values of optical density as Optical Density=1.578log (iu/i)en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8445
dc.language.isoenen_US
dc.subjectDESIGN,en_US
dc.subjectCONSTRUCTION,en_US
dc.subjectTESTING,en_US
dc.subjectLOCALLY,en_US
dc.subjectASSEMBLED DENSITOMETER,en_US
dc.titleDESIGN, CONSTRUCTION AND TESTING OF A LOCALLY ASSEMBLED DENSITOMETERen_US
dc.typeThesisen_US
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