BONE DENSITOMETER WITH FILM CASSETTE
    3.
    发明公开
    BONE DENSITOMETER WITH FILM CASSETTE 失效
    密度刀与胶卷暗盒骨

    公开(公告)号:EP0793446A1

    公开(公告)日:1997-09-10

    申请号:EP95939049.0

    申请日:1995-10-19

    申请人: LUNAR CORPORATION

    IPC分类号: A61B6 G06T7

    摘要: A dual energy densitometer (10) includes a solid state linear x-ray detector (13) which may be swept across the patient with the movement of a poly-energetic fan beam (23) of x-rays to produce a digital bone density image. A broad spectrum film plate (25) interposed between the detector (13) and the patient simultaneously provides a full spectrum radiographic image of high resolution and low parallax such as may be used for morphometric studies. Intervertebral spaces (40) may be used to measure vertebrate heights which may be statistically combined to provide a standard against which crush fractures may be detected.

    Ultrasonic densitometer and method
    4.
    发明公开
    Ultrasonic densitometer and method 失效
    超声波密度计和方法

    公开(公告)号:EP0728443A3

    公开(公告)日:1996-10-23

    申请号:EP96103815.5

    申请日:1989-05-09

    申请人: LUNAR CORPORATION

    IPC分类号: A61B8/00 G01N29/00

    摘要: An ultrasonic densitometer for measuring physical properties and integrity of a skeletal member in vivo has at least one transducer (21) and electrical means for launching an ultrasound pulse, detecting receipt of the pulse and determining a parameter therefrom. The densitometer may determine transit time through the member and compare with a database value, or may determine absolute attenuation at one or more frequencies and perform a comparison based on attenuation.

    摘要翻译: 用于体内测量骨架构件的物理性质和完整性的超声波密度计具有至少一个换能器(21)和用于发射超声波脉冲的电子装置,检测脉冲的接收并由此确定参数。 密度计可以确定通过该成员的传播时间并且与数据库值比较,或者可以确定一个或多个频率处的绝对衰减并且基于衰减来执行比较。

    ULTRASONIC DENSITOMETER DEVICE AND METHOD
    5.
    发明公开
    ULTRASONIC DENSITOMETER DEVICE AND METHOD 失效
    设备和方法使用超声波密度测量。

    公开(公告)号:EP0607377A1

    公开(公告)日:1994-07-27

    申请号:EP93914425.0

    申请日:1993-06-08

    申请人: LUNAR CORPORATION

    IPC分类号: A61B8 G01N29

    摘要: L'invention décrit un densitomètre à ultrasons (100) dans lequel des transducteurs ultrasoniques (121) sont placés en position éloignée les uns des autres dans un bain d'eau (103) dans lequel on introduit le talon d'une personne. Il est possible de mesurer le temps de transit d'une impulsion ultrasonique à travers l'eau et le talon, ainsi que l'atténuation de l'impulsion pour évaluer les propriétés physiques de l'os du talon. Une unité de commande centrale (38, 160, 162) coordonne la mesure ultrasonique avec le remplissage et la vidange automatique du bain d'eau, afin de permettre une opération hygiénique et répétitive. L'eau peut être préchauffée pour améliorer le confort du patient, ainsi que la fiabilité du résultat. Le temps de préchauffage est réduit par le fait que l'eau est préchauffée dans une chambre de préremplissage séparée (132) pendant l'examen précédent. L'alimentation par gravité de l'eau réduit la complexité de sa manipulation et permet un fonctionnement extrêmement silencieux. Un ergot (110) situé dans le bain d'eau et s'adaptant entre les orteils du patient, ainsi qu'un support de mollet (120) contribuent à limiter les mouvements du patient pendant la mesure.

    Ultrasonic densitometer device and method
    6.
    发明公开
    Ultrasonic densitometer device and method 失效
    超声波传感器装置及方法

    公开(公告)号:EP0341969A3

    公开(公告)日:1990-09-12

    申请号:EP89304664.9

    申请日:1989-05-09

    申请人: LUNAR CORPORATION

    IPC分类号: A61B8/08 G01N29/00

    摘要: An ultrasound densitometer (10) for measuring the physical properties and integrity of a member in vivo includes a transmit transducer (21) from which acoustic signals are transmitted, and a receive transducer (21) which receives the acoustic signals after they have been transmitted through the member (32) and/or a material with known acoustic properties. The densitometer allows the physical properties of a member to be measured without having to determine the distance between the transducers. The densitometer is able to measure the physical properties and integrity of the member from the transit time of acoustic signals through the member and/or by determining the absolute attenuation of at least one specific frequency component of acoustic signals transmitted through the member.

    Thin film acoustic array
    9.
    发明公开
    Thin film acoustic array 失效
    Dünnfilmakustische Wandleranordnung

    公开(公告)号:EP0867147A1

    公开(公告)日:1998-09-30

    申请号:EP98300761.8

    申请日:1998-02-03

    申请人: LUNAR CORPORATION

    IPC分类号: A61B8/08 B06B1/06

    CPC分类号: B06B1/0696 A61B8/0875

    摘要: An acoustic array of independently sensitive detecting elements is produced by locating a pattern of electrodes on a piezoelectric polymer film. Sensitivity of the film and a spaced away supporting structure are used to reduce artifacts caused by acoustic reflection in the supporting structure.

    摘要翻译: 独立敏感的检测元件的声学阵列通过将电极图案定位在压电聚合物膜上而产生。 使用膜和间隔开的支撑结构的灵敏度来减少由支撑结构中的声反射引起的伪像。