ABSTRACT
Background and Objective: Computed Tomography of brain (CT brain) is a higher radiation dose imaging technique than in the conventional radiographic examination. Not only the brain but also the orbits may included in the area of scanning. The radiation risk of CT brain to patient was the effect of radiation damage to the lens of eye which is the radiosensitive organ. Which may induced cataracts. In 2005, the Multislice CT was set up in Sappasittiprasong hospital Ubonrajchathani. The majority of CT examination was CT brain. There is no previous study to determine the radiation dose delivered to the eye of the lens. The result of scattered radiation dosimetry may provide to evaluate of radiation risk to the patient. This study aim to measure the scattered radiation dose to the lens of the eyes in Rado Phantom during scanning CT brain.Method : An experimental study was performed at Physics Department, Faculty of Science, Ubonrajchathani University and Sappasit-tiprasong hospital Ubonrajchathani. Using the thermoluminescence dosimeter (TLD). The TLD discs model TLD–100 and TLD Reader in model 3500 provided by Harshaw. The TLD–100 discs were attached directly to both eye of Head rando phantom and they were scanned to measure the scattered radiation dose to the lens during procedures. The protocol for brain examination was 120 kV 250 mAs. Result: The mean scattered radiation dose to lens of head rado phantom was 13.87 mGy .Conclusion: The measured dose was lower than the reported threshold of lens opacity and well cataract. Keywords: Scattered Radiation Dose, Computed Tomography of brain, lens dose, thermoluminescence dosimeter (TLD)
ABSTRACT
Background : Physical therapy treatment is one of the treatment used for the management of lumbar disc herniation and become more popular during resent years. Loss of function of lumbar spine is an essential problem for the back pain patient. Manual therapists sometimes select the technique of postero-anterior pressure (PA) to gain range in lumbar movements.Objectives : To measure the effect of postero-anterior pressure technique on lumbar spine movement in lumbar disc herniationDesign : An experimental studySetting : Srinagarind Hospital, Faculty of Medicine, Khon Kaen UniversitySubjects and Methods : Forty patients who were diagnosed with lumbar disc herniation by Orthopaedics and Radiologists. Magnetic resonance imaging (MRI) was used to a gold standard for diagnoses. Subjects were randomly assigned to a treatment or control group. The treatment group received both the lumbar traction and the postero-anterior pressures technique. The control group received only the lumbar traction.Measurements : The measurements consists of pain scale using the visual analogue, trunk movement and straight leg raising (SLR) using the inclinometer.Results : A Mann-Whitney U-test and Generalized Estimating Equation (GEE) revealed no significant difference between groups in the pain level. A repeated measure ANOVA no showed no significant difference between groups both trunk movements and SLR degrees. Even though, the results of the pain scale, the trunk movements and the SLR in the treatment group were not found to be significant difference from the control group but there were a tendency.Conclusion : This study is the first study providing support for the use of postero-anterior
ABSTRACT
Background: Evaluation is one of the essential parts of education. Before the academic year 2003, only final examination was used to evaluate students’ knowledge in Department of Radiology, Faculty of Medicine, Khon Kaen University.Objective: To compare students’ knowledge in diagnostic radiology between pre- and post-learning periods.Subject and Method: All the fifth-year medical students in the academic year 2003 were divided into 12 groups (10-15 per group), total 156 students. Each group rotated to attend in diagnostic radiology for 2 weeks. Each student was evaluated by pre- and post-tests which were the same test.Result: One hundred and fifty-two students (97.43%) showed improvement in their knowledge. The average score of the pre-test was 6.8, while that of the post-test was 10.91. There was no relationship between the score and final grade, except 4 students who got same score from the tests. They also got low score from the final examination, both theory and practice sections.Conclusion: Students had more knowledge in diagnostic radiology after learning.
ABSTRACT
Background Plain films from the Water’s view and the Caldwell’ s view in an erect projection can help physicians see the pathology of sinusitis through the differences between clear fluid and air level. However, the Bucky stand which is a common device used in most of the community hospital in Thailand cannot take two views in one film.( Although some supporting devices can do this, their limitation is suitable only for a supine projection.) Thus, a radiographer usually uses two films for this purpose with causing unclear image. This leads to more cost, more radiation dose. As a result, an innovative device is needed to solve these problems.Objective To invent an accessory device for paranasal sinuses radiography in order to be equipped with the Bucky stand and able to take two radiograph in an erect projection in one film. And also it can help to reduce the field size of radiation exposure. Design : An experiment studySetting : The X ray room No. 3 at Srinagarind Hospital, Faculty of Medicine, Khon Kaen University.Material \& Method : The following three procedures are employed. First, planning and Designing a device. The second, inventing a device. Finally, testing its effectiveness in these aspects: taking two radiographs in one film, comparing the outline sharpness with and without the device, and comparing dose area product with and without the device.Result : The findings reveal that the device can be conveniently fitted to the Bucky stand. It can be use for erect projection and provides better sharpness outline images than those without this device. This device can also help to reduce dose area product by 70.9% comparing with the two–film.Conclusion : This device can be easily attached to the Bucky stand facilitating needed sinus radiography in the erect projection. It is very handy as it is easy to fixed and removed. It supports taking the Water’s view and Caldwell’s view in one film. Moreover, quality of the radiographic image has greatly been improved by the device. By DAP meter measurement, through this device, the radiation dose area product significantly decreases by 70.9 % compared with two-view method.