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KMID : 1149020180200010011
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Journal of Korean Society of Computed Tomographic Technology
2018 Volume.20 No. 1 p.11 ~ p.22
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A study on the usefulness of method using Wide volume axial scan and assist device without sedation in pediatric brain CT
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Kim Min-Gyu
Yoon Kang-Cheol
Kim Min-Ju
Mun Ju-Wan
Bum Hee-Nam
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Abstract
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Purpose : The purpose of this study is to investigate whether the method which uses volume axial scan, assist device and pre-training of assistant is more efficient than the one using the previous helical scan.
Material and method : It was evaluated by 240 pediatric patients (mean age 3 years) in this study, except for those who were not able to use the experimental equipment such as conscious congestion, decreased consciousness and sleep state which were caused by acute trauma and medical illness. The experimental group applied with pre-training, volume axial scan, and assist device was compared with the control group in which patients without pretraining and assist device were only held. The test was analyzed by testing tie, waiting time, stay time in emergency room, radiation dose, the number of retake and sedation. Assuming that both groups were held on the test, it was carried out by checking if sedation are used as we need. And the experimental group was applied with the experimental equipment (assist device, pre-training).
Result : In the experimental group using the experimental equipment, the test time was reduced by 95 %, and also waiting time and stay time in emergency room were reduced by 39 % and 46 %, respectively. as compared with the control group. The rate of sedation was reduced 43 % (11cases) in axial scan compared with helical scan. In the number of retake, The rate of axial scan decreased by 25 % (5cases), compared to helical scan. P-value was 0.360, but there was no statistical significance. Radiation doses measured by rando phantom were reduced by 26 % in axial scan compared to helical scans. In collective dose, CTDI, DLP values of axial group were lower than the ones of helical scan. There was statistical significance because p-values of both groups were 0.002.
Conclusion : Although there were the specificity and limitations of pediatric patients in brain CT scan, the test reduced examination time, stay time in emergency room and also minimized sedation with low radiation dose. In conclusion, the research shows that the method using volume axial scan, assist device and pre-training is more effective than the one which used helical scan.
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KEYWORD
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pediatric brain ct, assist device, volume axial scan, pediatric sedation
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