Ambulatory ventricular function monitor
    1.
    发明授权
    Ambulatory ventricular function monitor 失效
    动态心室功能监测仪

    公开(公告)号:US4633881A

    公开(公告)日:1987-01-06

    申请号:US394465

    申请日:1982-07-01

    摘要: An ambulatory ventricular function anaylzer system is provided. The ambulatory ventricular function analyzer system is carried by a garment worn by a cardiac patient and includes ECG electrodes, a main left ventricular probe detector, and a background lung probe detector for providing diagnostically useful information while the patient goes about the normal activities of daily life. An information processing sub-system including a microprocessor responds to the electrode signal and to the probe signals and provides composite data representative of the ECG activity, the background lung time-activity, the left ventricular time-activity, and an R-wave histogram averaged over multiple cardiac cycles. The averaged data is sequentially sotred over a long time interval on magnetic tape in plural categories representing premature ventricular contraction, postpremature ventricular contraction, and normal ventricular contraction for subsequent display on a computer-based graphics display for study by a cardiac specialist. The main left ventricular function probe detector includes an array of cadmium telluride crystals mounted in a Pb housing having a parallel hole Pb collimator. The detector is substantially insensitive to position changes that arise during ambulatory monitoring.

    摘要翻译: 提供动态心室功能分析系统。 动态心室功能分析仪系统由心脏病患者佩戴的衣服携带,包括心电图电极,主要左心室探针检测器和背景肺探针检测器,用于在患者进行日常生活的正常活动时提供诊断上有用的信息 。 包括微处理器的信息处理子系统响应于电极信号和探针信号,并提供表示ECG活动,背景肺时间活动度,左心室时间活动度和R波直方图平均值的复合数据 超过多个心动周期。 平均数据在多个类别的磁带上以多个类别顺序地排列,代表心室早期心室收缩,心室后收缩和正常心室收缩,以便随后在基于计算机的图形显示器上显示以供心脏专家研究。 主要的左心室功能探针检测器包括安装在具有平行孔Pb准直器的Pb壳体中的碲化镉晶体阵列。 检测器对在行走监测期间出现的位置变化基本上不敏感。

    Body hugging instrumentation vest having radioactive emission detection
for ejection fraction
    2.
    发明授权
    Body hugging instrumentation vest having radioactive emission detection for ejection fraction 失效
    身体拥抱仪器背心具有射血分数的放射性发射检测

    公开(公告)号:US4572197A

    公开(公告)日:1986-02-25

    申请号:US616491

    申请日:1984-06-01

    摘要: A vest for positioning medical instrumentation about the human or animal torso to provide ambulatory monitoring of patient cardiac functions or administration of medication or therapy with reasonable freedom of movement while maintaining precise positioning of the instrumentation relative to the torso. The vest functions to provide accurate placement of such instrumentation as a radioactive emission sensor for monitoring ejection fraction. The vest typically includes a sheet of a dimensionally rigid material such as a low density polymer tailored to fit between neck and hips and to surround the torso, terminating on the back. Straps are provided to fasten the sheet ends together at the back and to suspend it from the shoulders. The vest may also be instrumented to function as a transducer itself to detect chest expansion for heart beat or lung volume monitoring.

    摘要翻译: 用于定位关于人或动物躯干的医疗仪器的背心,以提供患者心脏功能的行走监测或者具有合理的运动自由度的药物治疗或治疗,同时保持仪器相对于躯干的精确定位。 背心用于提供这种仪器的准确放置,作为用于监测射血分数的放射性发射传感器。 背心通常包括尺寸刚性材料的片材,例如适于装配在颈部和臀部之间并围绕躯干的低密度聚合物,终止于背部。 提供带子将片材端部在后面固定在一起并将其悬挂在肩部上。 背心也可以用作传感器本身来检测胸部扩张以进行心跳或肺体积监测。

    Variable angle slant hole collimator
    3.
    发明授权
    Variable angle slant hole collimator 失效
    可变角度倾斜准直器

    公开(公告)号:US4419585A

    公开(公告)日:1983-12-06

    申请号:US238582

    申请日:1981-02-26

    CPC分类号: G21K1/025 G02B5/005

    摘要: A variable angle radiation collimator particularly for use in gamma-photon medical diagnostic systems in a gamma-photon camera system for radiological examination of human subjects. The collimator provides collimation of gamma-photon radiation along a single beam direction which may be varied along two axes to adjust exposure angle or to provide a scanning capability. The collimator is a stack of substantially identical radiation-opaque plates, each of which are apertured with a similar array of openings. The combined effect of the stacked aperture plates is to transmit radiation in a predetermined orientation. The collimated angle of the radiation thus generated is controlled by the coincidence of the array of openings. The stack is retained by a mechanism which permits adjustment of the collimation angle, and the plates are fabricated to provide ease of shear motion during such adjustment. In addition, the tradeoff between the resolution and intensity of radiation transmitted may be easily varied by adjusting stack thickness.

    摘要翻译: 一种可变角度辐射准直仪,特别用于γ射线照相机系统中伽马光子医学诊断系统,用于人类受试者的放射学检查。 准直器提供沿着单个光束方向的伽马光子辐射的准直,其可以沿两个轴线变化以调节曝光角度或提供扫描能力。 准直器是基本上相同的辐射不透明板的堆叠,其每个都具有类似的开口阵列。 堆叠的孔板的组合效果是以预定方向透射辐射。 由此产生的辐射的准直角由开口阵列的一致性来控制。 该堆叠被允许调整准直角的机构保持,并且制造这些板以在这种调节期间提供剪切运动的容易性。 此外,通过调整堆叠厚度,可以容易地改变透射的辐射的分辨率和强度之间的折衷。