Analysis of the Cardiac Magnetic Field Using Multichannel Superconducting Quantum Interference Device System

利用多通道超导量子干涉仪系统分析心脏磁场

• 批准号: 07308077
• 负责人: MITSUI Toshio
• 金额: $ 2.24万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07308077/
• 关键词: magnetocardiogram; SQUID; current vector maps; WPW症候群; His束電位; 右室負荷; 左室負荷; 胎児心磁; 超伝導量子干渉素子; 生体磁気計測; 心起電力; 刺激伝導系; 心負荷

We measured the x and y components of the cardiac field for diagnosing heart disease using the 32-channel superconducting quantum interference device (SQUID) system. The patients' magnetocardiogram (MCG) and electrocardiogram (ECG) were simultaneously recorded in the magnetically shielded room at the University of Tsukuba Hospital. The detection area was 175*175 mm with 64 points on the x-y plane about 10 mm parallel to the surface of the chest. From the data, current vector maps were obtained, which showed the current distribution and isofield maps of two-dimensional vector |Bx, y|=|Bx+By|.MCG and ECG were evaluated in subjects as follows : normal, right ventricular overload, left ventricular overload, ischemic heart disease, WPW syndrome, and fetus.On MCG,the peak signal was observed just above the current source. In addition to magnitude, direction, and polarity, time and localization were also represented on the two-dimensional current vector isofield maps.

我们利用32通道超导量子干涉仪（SQUID）系统测量了心脏磁场的x和y分量，用于心脏病的诊断。在筑波大学医院的磁屏蔽室中同时记录患者的心磁图（MCG）和心电图（ECG）。检测区域为175*175 mm，在x-y平面上有64个点，与胸部表面平行约10 mm。由数据得到了电流矢量图，显示了二维矢量的电流分布和等场强图|Bx，y| =| Bx+By|对正常人、右室超负荷、左室超负荷、缺血性心脏病、预激综合征和胎儿的MCG和ECG进行了评价。除了幅度，方向和极性，时间和本地化也表示在二维电流矢量等场图。

项目成果

Yasunaga Noda, et al.: "Measurement of tangential component of magnetocardiogram in normal subjects." Japanese Journal of Medical Instrumentation. 65. 233-240 (1995)

Yasunaga Noda 等人：“正常受试者心磁图切向分量的测量”。

Yasunaga Noda et al.: "Estimation of ventricular overload using a magnetocardiogram and It's use for pre-and post-operative evaluation" Cardiovascular Surgery. Supplement 1. 159 (1995)

Yasunaga Noda 等人：“使用心磁图估计心室负荷及其用于术前和术后评估”心血管外科。

Keiji Tsukada, et al.: "Multichannel SQUID system detecting tangential components of the cardiac magnetic field." Review of Scientific Instruments. 66. 5085-5091 (1995)

Keiji Tsukada 等人：“多通道 SQUID 系统检测心脏磁场的切向分量。”

堀米 仁志 他: "接線方向心磁図を用いた小児の右心肥大の評価" 日本生体磁気学会雑誌. 8(1). 298-301 (1995)

Hitoshi Horime 等人：“使用切向心磁图评估儿童右心肥大”，日本生物磁学会杂志 8(1) (1995)。

堀米 仁志 他: "接線方向心磁アローマップによる右脚ブロック症例の右室負荷の評価" 日本小児科学会雑誌. 100(2). 319-319 (1996)

Hitoshi Horime 等人：“使用切向心磁箭头图评估右束支传导阻滞病例的右心室负荷”，日本儿科学会杂志 100(2) (1996)。