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1. 发明公开

US20240377493A1 DEVICE AND METHOD FOR PROSPECTIVE CORRECTION FOR GRADIENT PULSE SHAPE DISTORTIONS IN MRI IMAGING 审中-公开
公开(公告)号：US20240377493A1
公开(公告)日：2024-11-14
申请号：US18291946
申请日：2022-07-28
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Peter Ulrich BÖRNERT , Juergen Erwin Rahmer
IPC分类号： G01R33/565 , G01R33/385
CPC分类号： G01R33/56572 , G01R33/3852
摘要： For a gradient system (102, 300) for a magnetic resonance imaging system (100) a solution for improving the control of gradient fields for a higher image quality shall be created. This is achieved by a gradient system (102, 300) the gradient system (102, 300) comprising: at least one gradient coil (110, 310) for generating the gradient magnetic field when supplied with electrical current, wherein the gradient coil (110, 310) is configured for generating at least one selection gradient magnetic field by transmitting selection gradient pulses, wherein the gradient system (102, 300) comprises a gradient coil amplifier (112, 308) configured for supplying the electrical current to the gradient coil (110, 310), the gradient system (102, 300) further comprising a current sensor system (113, 312) configured for sampling an electrical current supplied to the gradient coil (110, 310) by the gradient coil amplifier (112, 308), wherein the gradient system (102, 300) is further configured to obtain an actual selection gradient pulse shape (304) of the selection gradient magnetic field by applying a current to field modulation transfer function (CGMTF) to the sampled electrical current, which enables a magnetic resonance examination system (100) to compensate for the deviation of the actual selection gradient pulse shape (304) from an input selection gradient pulse shape (302) by adjusting radio frequency pulses (316) emitted simultaneously with the selection gradient pulses. The present invention also concerns a magnetic resonance imaging system (100), a method of operating a gradient system (102, 300) and a computer program product.

2. 发明授权

US11774300B2 Pressure sensor for being introduced into a circulatory system 有权
公开(公告)号：US11774300B2
公开(公告)日：2023-10-03
申请号：US16708521
申请日：2019-12-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Bernhard Gleich , Juergen Erwin Rahmer
IPC分类号： A61B5/0215 , G01K7/36 , G01K1/26 , G01K13/04 , G01L9/00 , A61B34/20 , A61B90/00 , A61B5/06 , A61B1/00 , A61B5/05 , A61B5/00
CPC分类号： G01K7/36 , A61B1/00158 , A61B5/0215 , A61B5/02152 , A61B5/05 , A61B5/062 , A61B5/6851 , A61B5/6852 , A61B34/20 , A61B90/36 , A61B90/39 , G01K1/26 , G01K13/04 , G01L9/0001 , G01L9/007 , A61B5/02158 , A61B2034/2051 , A61B2034/2072 , A61B2090/3958 , A61B2090/3966 , A61B2562/0223
摘要： The invention relates to a passive pressure sensor (501) for being introduced into the circulatory system of a human being and for being wirelessly read out by an outside reading system. The pressure sensor comprises a casing (502) with a diffusion blocking layer for maintaining a predetermined pressure within the casing and a magneto-mechanical oscillator with a magnetic object (508) providing a permanent magnetic moment. The magneto-mechanical oscillator transduces an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, wherein at least a part of the casing is flexible for allowing to transduce external pressure changes into changes of the mechanical oscillation of the magnetic object. The pressure sensor can be very small and nevertheless provide high quality pressure sensing.

3. 发明授权

US11976985B2 Tracking system and marker device to be tracked by the tracking system 有权
公开(公告)号：US11976985B2
公开(公告)日：2024-05-07
申请号：US16708493
申请日：2019-12-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Bernhard Gleich , Juergen Erwin Rahmer , Michael Grass
IPC分类号： A61B5/06 , A61B1/00 , A61B5/00 , A61B5/0215 , A61B5/05 , A61B34/20 , A61B90/00 , G01K1/26 , G01K7/36 , G01K13/04 , G01L9/00
CPC分类号： G01K7/36 , A61B1/00158 , A61B5/0215 , A61B5/02152 , A61B5/05 , A61B5/062 , A61B5/6851 , A61B5/6852 , A61B34/20 , A61B90/36 , A61B90/39 , G01K1/26 , G01K13/04 , G01L9/0001 , G01L9/007 , A61B5/02158 , A61B2034/2051 , A61B2034/2072 , A61B2090/3958 , A61B2090/3966 , A61B2562/0223
摘要： The invention relates to a marker device and a tracking system for tracking the marker device, wherein the marker device comprises a rotationally oscillatable magnetic object and wherein the rotational oscillation is excitable by an external magnetic field, i.e. a magnetic field which is generated by a magnetic field providing unit 20, 31 that is located outside of the marker device. The rotational oscillation of the magnetic object induces a current in coils, wherein based on these induced currents the position and optionally also the orientation of the marker device is determined. This wireless kind of tracking can be carried out with relatively small marker devices, which can be placed, for instance, in a guidewire, the marker devices can be read out over a relatively large distance and it is possible to use a single marker device for six degrees of freedom localization.

4. 发明公开

US20230404432A1 ENDOBRONCHIAL FLOW MEAUREMENT AND FLOW CONTROL FOR REGIONAL VENTILATION 审中-公开
公开(公告)号：US20230404432A1
公开(公告)日：2023-12-21
申请号：US18112164
申请日：2023-02-21
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Joerg Sabczynski , Bernhard Gleich , Juergen Erwin Rahmer , Thomas Koehler , Rafael Wiemker , Roberto Buizza , Cornelis Petrus Hendriks , Jaap Roger Haartsen , Nataly Wieberneit
IPC分类号： A61B5/087 , A61B5/00
CPC分类号： A61B5/0876 , A61B5/6862 , A61B2562/0223 , A61B2562/0247 , A61B5/7278
摘要： A medical device for treating an associated patient includes a bronchial sensor device configured to measure fluid pressure in a bronchus of the associated patient; and an electronic controller configured to: receive the fluid pressure data from the bronchial sensor device; and calculate a fluid flow measurement through the bronchus based on the measured fluid pressure.

5. 发明授权

US11598677B2 Tracking system and marker device to be tracked by the tracking system 有权
公开(公告)号：US11598677B2
公开(公告)日：2023-03-07
申请号：US16708513
申请日：2019-12-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Bernhard Gleich , Juergen Erwin Rahmer , Michael Grass
IPC分类号： A61B5/00 , G01K7/36 , G01K1/26 , G01K13/04 , A61B5/0215 , G01L9/00 , A61B34/20 , A61B90/00 , A61B5/06 , A61B1/00 , A61B5/05
摘要： A tracking system for tracking a marker device for being attached to a medical device is provided, whereby the marker device includes a sensing unit comprising a magnetic object which may be excited by an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, and the tracking system comprises a field generator for generating a predetermined magnetic or electromagnetic excitation field for inducing mechanical oscillations of the magnetic object, a transducer for transducing a magnetic or electromagnetic field generated by the induced mechanical oscillations of the magnetic object into one or more electrical response signals, and a position determination unit for determining the position of the marker device on the basis of the one or more electrical response signals.

6. 发明授权

US11592341B2 Magnetic measurement device for measuring temperature or other property 有权
公开(公告)号：US11592341B2
公开(公告)日：2023-02-28
申请号：US16708485
申请日：2019-12-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Bernhard Gleich , Juergen Erwin Rahmer
IPC分类号： G01K7/00 , G01K7/36 , G01K1/26 , G01K13/04 , A61B5/0215 , G01L9/00 , A61B34/20 , A61B90/00 , A61B5/06 , A61B1/00 , A61B5/05 , A61B5/00
摘要： The invention relates to a measurement device 1 comprising a rotatable magnetic object 4 which can oscillate with a resonant frequency if excited by an external magnetic torque. The measurement device 1 is adapted such that the resonant frequency depends on the temperature or on another physical or chemical quantity like pressure, in order to allow for a wireless temperature measurement or measurement of the other physical or chemical quantity via an external magnetic field providing the external magnetic torque. This measurement device can be relatively small, can be read-out over a relatively larger distance and allows for a very accurate measurement.

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