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KMID : 1131320140160020151
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Journal of Korean Society of Computed Tomographic Technology
2014 Volume.16 No. 2 p.151 ~ p.156
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A Study of Non-enhanced spiral computed tomography when kVp variation uric acid, Non Uric acid changes in the HU
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Jung Myung-Jin
Noh Sang-Ho
Moon Chang-Woon
Noh Ji-Sook
Kim Sung-Gil
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Abstract
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Purpose : Information on the components of urinary tract effective therapy plays an important role in determining how and to urinary tract prediction enables the fragility. HU measurement of urinary stone tube voltage according to the value of the Non-uric acid Uric acid changes in the value of the HU to evaluate.
Materials and method : Plastic Bottle sapin in the human body, similar to a urinary tract stones using pork was produced in the phantom experiment. 640-Slice MSCT (Aquilion ONE, Toshiba Medical Center, Japan) using the Volume scan approach was taken. Urinary stones according to the image of each tube voltage was measured HU values, the statistical analysis of the data collected for each tube voltage of urinary stones according to the significance of differences in HU values to see performed by paired sample test, p<0.01 If one looked to be statistically significant.
Result : Uric acid HU values are 135kV, 412.67±17.49, 100kV, 401.50±29.46, 80kV, 401.00± 24.88, when the tube voltage decreases to a constant value appeared HU, Non-Uric acid HU value is 135kV, 442.19±16.86, 100kV, 624.52±26.30, 80kV, 826.05±32.15, the tube voltage is decreased to HU values increased along. Uric acid in the case of a tube voltage conversion value of the HU, there were no statistically significant differences(P>0.01), Non-uric acid in the case of 80kV and 135kV, 100kV and 135kV, 80kV and 100kV HU value of a statistical significant difference(P<0.01). 135kV is Uric acid and Non-uric acid HU value showed no significant difference(P>0.01), 100kV and 80kV Uric acid and Non-uric acid HU difference was statistically significant difference respectively. (P<0.01)
Conclusion : When a non-enhanced spiral computed tomography(CT) in the case of Non-uric acid in the urinary tract tube voltage decreases to that of HU values were rising, Uric acid in the case of HU values increased tube voltage decreased. For urinary stones during non-enhanced spiral computed tomography(CT) of 100kV or 80kV Lower tube voltage should be used for the components of Urinary stone believed to be helpful in diagnosis.
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KEYWORD
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Uric acid, Non-uric acid , Tube voltage , Volume scan
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