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  1. Nadzirah Mohamad Radzi, Zafri Azran Abdul Majid
    MyJurnal
    Carabiner is one of Personal Protective Equipment (PPE), which is used to protect the users from hazards by reducing any chance of serious injury. Thus, it is very important to detect even a small
    defect on the component before it becomes worse that could give harm to the users. The aim of this paper is to find out the appropriate imaging technical factors of steel carabiner by using computed radiography (CR). Methods: Radiographic images of carabiner were obtained by manipulating the values of kVp and mAs with respect to contrast and density. A preliminary study was carried out to determine the exposure factor combination in order to produce perceptible visual quality of radiographic images. Positioning techniques applied in this study were whole view (open-gate and close-gate position) and screw view (open-gate and close-gate position). An assessor was invited to evaluate the radiographs by using Image Quality Criteria Scoring (ICS) adapted from European Guidelines on Quality Criteria for Diagnostic Radiographic Images. Results: Findings showed that the optimum values of kVp and mAs in imaging whole view (open-gate and close-gate) carabiner were 133 kVp and 28 mAs while, for screw view (opengate and close-gate) the range of kVp and mAs preferred were 121 kVp to 133 kVp and 28 mAs to 36 mAs respectively. Conclusion: This study has found that the use of medical CR to expose metal steel such as
    carabiner is accepted. By manipulating the imaging parameters, CR can produce a good quality image of carabiner.
  2. Nurshuhada Ali, Zafri Azran Abdul Majid, Mohd Syahriman Mohd Azmi
    MyJurnal
    The ideal imaging system that is providing a good quality image of minimal radiation dose. There are many parameters that influenced image quality and radiation dose on clinical radiography. This study has identified some of the problems whereby there are practitioners do not select the proper size of image receptor (IR) and collimation during the examination. The re-usable of the IR and imaging plate also need to be concerned whether multiple exposures may affect the image
    quality or not. The purpose of this study is to investigate the effect of different exposure settings; kVp, mAs, collimation field sizes and different IR’ sizes for image quality and radiation dose. Methods: The wall-mounted x-ray machine act as a sources of radiation which exposed the acrylic cylinder that placed over the IR. The examination is repeated with different kVp, mAs, collimation field sizes and IR’s sizes. The source to image distance (SID) is fixed to 100 cm distance and put Nano dot dosimeter similar level with the top of acrylic to measure the dose. The result analysed by using software ImageJ to measure the Contrast to Noise Ratio (CNR). Results: The percentage of CNR1 and CNR2 reduced as the kVp is increased from (CNR1=77.25, CNR2=64.45), (CNR1=73.47, CNR2=61.22) and (CNR1=62.80, CNR2=57.32) for 50 kVp, 75 kVp and 100 kVp respectively and fluctuate when mAs increased. The CNR and entrance skin dose (ESD) shows higher when x-ray beam collimate according to IR’s size. Conclusions: Overall, the manipulative effect of exposure settings on image quality and ESD shows some positive results. The result also shows inconsistent readings in the CNR and ESD. The percentage of CNR decreased when kVp increases and slightly fluctuate when mAs increased. The ESD reading depicts higher when the kVp and mAs increase as well as when x-ray beam collimated according to IR’s sizes.
  3. Laila Kalidah Junet, Zafri Azran Abdul Majid, Muhammad Syahmi Che Othaman
    MyJurnal
    Aluminum (Al) is a standard material that has been used as a filter for ionising radiation however for polyvinyl chloride (PVC) there is no solid evidence to support but has been recommended. PVC has been selected as a potential filter material due to it is a long lasting constructing material and very durable, which can be used in a variety of application. The purpose of this study was to observe the effect of PVC on entrance surface dose (ESD) values as compare to the standard X-ray filter of Al. The effect of varying thickness of the materials and difference exposure settings were observed and compared to each other. From this study, the percentage difference for both PVC and Al thickness is less than ± 25.00 % shows that PVC has a potential to be used as one of the filter materials due to its ability to reduce the ESD value
  4. Nurul Hidayah Zulkifli, Mohd Syahriman Mohd Azmi, Zafri Azran Abdul Majid
    MyJurnal
    Non destructive testing (NDT) is a procedure to assess the internal components without
    disassembling the outer components. Industrial imaging uses high energy x-rays to penetrate materials while x-rays used in medical imaging has exposure limitation. The purpose of this paper is to determine the optimum technical factors (kVp, mAs, and SID) used in medical imaging Computed Radiography (CR) system suitable for industrial imaging application to inspect lead acid battery. Methods: Lead acid battery is exposed to radiation with predetermined technical factors utilized in medical imaging. The kVp, mAs, and SID are varied throughout the experiment. The optimum technical factors obtained are further used to expose the battery at six different angles for inspection of lead plates. The sizes of lead plates are measured using imageJ software and the measured length is compared to the actual sizes of lead plates. Results: At 15 mAs, two values with the smallest difference to the original size of the lead plates are produced which is at 75 kVp and 125 kVp. Based on the technical factors used in this experiment, it is concluded that 15
    mAs is the optimal mAs that can be used to provide the measurement with the least difference when compared to the original size of the lead plates. All measurement with the smallest difference when compared to the original sizes of lead plates are obtained at 125 kVp which is 4.19 cm (plate C when mAs at 5), 4.23 cm (plate C when mAs at 10), and 4.23 cm (plate C when mAs at 15). This indicates that 125 kVpis suitable to be used for inspection. The accurate measurement of lead plates is achieved when 100 cm SID is used. When exposed, white lead sulphate is seen coating the lead plates. Conclusion: X-rays used in medical imaging can be applied in industrial imaging for lead acid battery inspection as it also possess high energy and penetrating power.
  5. Nur Farahana Pauzi, Zafri Azran Abdul Majid, Wan Muhamad Nasuha Wan Hussin, Abdul Halim Sapuan, Mohd Zulfaezal Che Azemin
    MyJurnal
    X-ray is produced in form of divergent beam. The beam divergence results to blurring effect that influences image diagnosis. Thus, the blurring effect assessment should be enrolled within the quality control (QC) program of an imaging unit.
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