Development of the bedside type fetus magnetocardiograph and elucidation of the development process of fetus autonomic nerve

床旁型胎儿心磁图仪的研制及胎儿自主神经发育过程的阐明

• 批准号: 21300158
• 负责人: KOBAYASHI Koichiro
• 金额: $ 9.65万
• 依托单位: Iwate University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21300158/
• 关键词: 生体生命情報学; 医用診断機器開発; 計測工学; 胎児自律神経; 心磁図計測; 医療診断機器開発

Fetus magnetocardiograph which did not require the magnetically shielded room was developed. The fetus magnetocardiograph is using the low noise and wide range type analog control circuit. The fetus magnetocardiogram is weak signal, and it is measured in the condition that was buried in the noise. Then, noise rejection program using the independent component analysis and the Wiener filter was made. The extraction of the fetal heart rate fluctuation became possible. And, features of heart rate variability of the fetus which changed with the pregnancy progress were confirmed.

研制了不需要磁屏蔽室的胎儿心磁图仪。胎儿心磁图机采用低噪声宽范围型模拟控制电路。胎儿心磁信号是微弱信号，是在被噪声淹没的条件下进行测量的。然后，利用独立分量分析和维纳滤波器的噪声抑制程序。胎儿心率波动的提取成为可能。并证实了胎儿心率变异性随妊娠进展而变化的特点。

项目成果

Development of wide dynamic range analog flux-locked loop using flux-quanta counting for SQUID magnetometer

使用 SQUID 磁力计磁通量子计数开发宽动态范围模拟磁通锁定环

• 发表时间: 2012
• 作者: K. Kobayashi;D. Oyama;他
• 通讯作者: 他

Measurement of Magnetic Interference Induced by Measurement and Gradient Field Coils for Low-Field MRI Systems

低场 MRI 系统中测量线圈和梯度场线圈引起的磁干扰的测量

• 发表时间: 2012
• 作者: Matsumoto H;Matsuda T;Miyamoto K;Shimada T;Hayashi A;Mikuri M;Hiraoka Y;Daisuke Oyama
• 通讯作者: Daisuke Oyama

Superconductors - Properties, Technology, and Applications

• DOI: 10.5772/1810
• 发表时间: 2012-04
• 作者: Y. Grigorashvili

64 チャネル心磁計と187ch ベクトル合成心電計の開発ー臨床での意義と課題

64通道心磁图仪和187通道矢量复合心电图仪的研制-临床意义和挑战

• 发表时间: 2012
• 作者: 中居賢司,小林宏一郎;他
• 通讯作者: 他

Parameters decision of noise rejection using independent component analysis for low SNR magnetocardiogram

低信噪比心磁图独立分量分析噪声抑制参数决策

• 发表时间: 2010
• 作者: 和田裕貴;谷川基務;近江雅人;春名正光;小林宏一郎
• 通讯作者: 小林宏一郎