回音強度對於肝外膽管內徑估測值的影響

Different Gain-Setting Affects Measurement of Extrahepatic Bile Duct by Real-Time Ultrasound

吳重慶(Chung-Chieng Wu) ； 張文宇(Wen-Yu Chang) ； 藍傳盛(Twang-Sirn Lan) ； 何耀輝(Yau-Hui Ho)

《The Kaohsiung Journal of Medical Sciences》 1卷6期 (1985/06) Pp. 329-333

https://doi.org/10.6452/KJMS.198506.0329

摘要

Thirty-one persons were examined by means of a Toshiba Sonolayer 22A real-time ultrasound scanner to evaluate the effect of different gain-settings on the measurement of the internal diameter of the common bile duct. The subjects consisted of 15 males and 16 females; 6 with and 25 without evidence(s) of intra- and/or extra-hepatic biliary stones. Their ages ranges from 11 to 65 years old. With a gain-setting of 75 dB, the internal diameter of the extrahepatic duct was 0.56±0.19 cm (mean ± S. D.), while with 95 dB, the dimension was 0.48±0.18 cm. A significant difference existed between the results of the 2 gains (p＜0.001, paired t-test).
In conclusion, gain-setting is one of the important factors affecting the measurement of the internal diameter of the extrahepatic bile duct during ultrasound examination.

並列摘要

Thirty-one persons were examined by means of a Toshiba Sonolayer 22A real-time ultrasound scanner to evaluate the effect of different gain-settings on the measurement of the internal diameter of the common bile duct. The subjects consisted of 15 males and 16 females; 6 with and 25 without evidence(s) of intra- and/or extra-hepatic biliary stones. Their ages ranges from 11 to 65 years old. With a gain-setting of 75 dB, the internal diameter of the extrahepatic duct was 0.56±0.19 cm (mean ± S. D.), while with 95 dB, the dimension was 0.48±0.18 cm. A significant difference existed between the results of the 2 gains (p＜0.001, paired t-test).
In conclusion, gain-setting is one of the important factors affecting the measurement of the internal diameter of the extrahepatic bile duct during ultrasound examination.

並列關鍵字

real-time ultrasound ； gain-setting ； extrahepatic bile duct dimension