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    • 1. 发明授权
    • Ventilation imaging using a fine particle aerosol generator
    • 通气成像使用细粒子气溶胶发生器
    • US5829436A
    • 1998-11-03
    • US789551
    • 1997-01-27
    • Reid M. RubsamenStephen J. FarrFred Silverstein
    • Reid M. RubsamenStephen J. FarrFred Silverstein
    • A61B5/08A61K51/12A61M11/00
    • A61K51/1206A61B5/0813A61B6/4258A61K2123/00
    • A method of diagnosing a patient is carried out by delivering an aerosolized dose of a radioactive formulation to a patient and making a ventilation image of radioactive material deposited in the lung. This image is compared with a separately generated image (perfusion image) taken after injecting radiolabled particles into the pulmonary arterial circulation. Devices, packaging and methodology for creating aerosols are provided which allow for efficient and repeatable delivery of radioaerosols to the lungs of a patient. Devices may be plug-in units or hand-held, self-contained units which are automatically actuated at the same release point in a patient's inspiratory flow cycle. The device is loaded with a container of a radioactive formulation such as .sup.99m Tc-labelled diethylene-triamine pentaacetic acid (DTPA). Actuation of the device forces the radioactive formulation through a porous membrane of the container which membrane has pores having a diameter in the range of about 0.25 to 6.0 microns. The container includes radioactive shielding in the form of a lead coating and/or a lead surrounding packet. The porous membrane is positioned in alignment with a surface of a channel through which a patient inhales air.
    • 通过将放射性制剂的雾化剂量递送到患者并且放置在肺中的放射性物质的通风图像来进行诊断患者的方法。 将该图像与在肺动脉循环中注射放射性粒子后分离产生的图像(灌注图像)进行比较。 提供了用于产生气溶胶的装置,包装和方法,其允许放射性天然气对患者的肺的有效和可重复的递送。 设备可以是插入式单元或手持的独立单元,其在患者的吸气流循环中在相同的释放点自动启动。 该装置装载有放射性制剂的容器,例如99mTc标记的二亚乙基三胺五乙酸(DTPA)。 该装置的致动迫使放射性制剂通过容器的多孔膜,该膜具有直径在约0.25至6.0微米范围内的孔。 容器包括铅涂层和/或铅包围形式的放射性屏蔽。 多孔膜定位成与患者吸入空气的通道的表面对准。