비조영증강 MDCT에서 관전압과 절편 두께에 따른 요로결석의 HU 측정
HU Measurement of Urinary Stone according to the Tube Voltage and Slice Thickness in Non-enhancement MDCT
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초록
To distinguish urinary stones, we tried to identify the components of urinary stone using HU of nonenhancement MDCT. HU was measured according to the tube voltage and the slice thickness of the section of urinary stone. After injecting urinary stone into a small plastic bottle, experimental phantom was prepared using pork similar to human body. 640 slice MDCT. HU of urinary stone was measured according to each tube voltage and slice thickness in the obtained images. HU of urinary stones according to tube voltage were 135 kVp (373.68±30.20 HU), 100 kVp (525.94±44.93 HU) and 80 kVp (691±80.80 HU), and the slice thickness was 0.5 mm (752±25.71 HU) minimum (545.96±29.89 HU), 1.5 mm (462.68±46.35 HU), 2 mm (360.43±66.19 HU). It was found that the HU of urinary stone was increased with decreasing tube voltage, and the HU of urinary stone was decreased with increasing thickness of the section. Non-enhancement MDCT for urinary stone is thought to be useful for the diagnosis of urinary stone using thin slice thickness using low tube voltage.
Abstract
To distinguish urinary stones, we tried to identify the components of urinary stone using HU of nonenhancement MDCT. HU was measured according to the tube voltage and the slice thickness of the section of urinary stone. After injecting urinary stone into a small plastic bottle, experimental phantom was prepared using pork similar to human body. 640 slice MDCT. HU of urinary stone was measured according to each tube voltage and slice thickness in the obtained images. HU of urinary stones according to tube voltage were 135 kVp (373.68±30.20 HU), 100 kVp (525.94±44.93 HU) and 80 kVp (691±80.80 HU), and the slice thickness was 0.5 mm (752±25.71 HU) minimum (545.96±29.89 HU), 1.5 mm (462.68±46.35 HU), 2 mm (360.43±66.19 HU). It was found that the HU of urinary stone was increased with decreasing tube voltage, and the HU of urinary stone was decreased with increasing thickness of the section. Non-enhancement MDCT for urinary stone is thought to be useful for the diagnosis of urinary stone using thin slice thickness using low tube voltage.
참고문헌 (16)
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