Misalignment or Radiation Field and Light Field in a Radiographic X-Ray Unit - A Case Study

Abstract

This case of misalignment of radiation field and light field in a radiographic x-ray unit has beenrecorded during first ever implemented quality control program in the Department of Radiologyat Universiti Sains Malaysia. A maximum difference of 1.27 centimeters between radiation fieldand light field is acceptable for quality control purposes in diagnostic radiology. The totalmisalignment of 3.2 centimeters light field was found on the longitudinal axis. The totalmisalignment of light field on transverse axis was 1.5 centimeters. The total misalignment oflight field on transverse axis was 1.5 centimeters. The total misalignment of radiation field onlongitudinal axis was 2.5 centimeters. The total misalignment of radiation field on transverseaxis was 2.5 centimeters. There is always a need to implement a structured quality controlprogram to provide better diagnostic results in addition to the safe use of radiation for patientsand radiation workers.