利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

275 条记录 (耗时 0.023 秒)

    Posterior image sampling to detect errors in medical imaging
    51.
    发明授权
    Posterior image sampling to detect errors in medical imaging 有权

    公开(公告)号：US11164346B2

    公开(公告)日：2021-11-02

    申请号：US15929940

    申请日：2020-05-29

    申请人： Elekta AB (publ)

    发明人： Jonas Anders Adler ,  Ozan Öktem

    IPC分类号： G06T11/00 ,  G06T7/10

    摘要： Image reconstruction can include using a statistical or machine learning, MAP estimator, or other reconstruction technique to produce a reconstructed image from acquired imaging data. A Conditional Generative Adversarial Network (CGAN) technique can be used to train a Generator, using a Discriminator, to generate posterior distribution sampled images that can be displayed or further processed such as to help provide uncertainty information about a mean reconstruction image. Such uncertainty information can be useful to help understand or even visually modify the mean reconstruction image. Similar techniques can be used in a segmentation use-case, instead of a reconstruction use case. The uncertainty information can also be useful for other post-processing techniques.

    Radiotherapy facility lifting apparatus
    52.
    发明授权
    Radiotherapy facility lifting apparatus 有权

    公开(公告)号：US11124393B2

    公开(公告)日：2021-09-21

    申请号：US16146248

    申请日：2018-09-28

    申请人： Elekta AB (Publ)

    发明人： Sujitkumar Hemanthkumar

    IPC分类号： B66C23/24 ,  B66C23/62 ,  B66C23/68 ,  B66C23/20 ,  A61N5/10 ,  G01R33/28

    摘要： A lifting apparatus for a facility combining magnetic resonance imaging apparatus and radiotherapy apparatus inside a purpose-built structure having a fixed wall, the lifting apparatus comprising a wall-mounted articulating jib crane which is selectively moveable between a stowed state and a free state in which it is operable as a crane, in which substantially all of the load-bearing parts of the crane are made of non-ferromagnetic metal, and in which guides are mounted to the wall to receive and to releasably hold the crane in a fixed position relative to the wall when the crane is in the stowed state.

    Machine vision system
    54.
    发明授权
    Machine vision system 有权

    公开(公告)号：US10576301B2

    公开(公告)日：2020-03-03

    申请号：US15655573

    申请日：2017-07-20

    申请人： Elekta AB (publ)

    发明人： Shakil Ahmed Awan ,  Adrian Maxwell Smith

    IPC分类号： G01K1/04 ,  A61N5/10 ,  G21K1/04 ,  G06T7/00 ,  H04N5/225 ,  A61B90/00

    摘要： A fluorescing marker is used in order to mark (for example) a leaf of a multi-leaf collimator and/or the reference points within the field of view. The markers are illuminated with light tuned to cause the markers to fluoresce at a wavelength different to that of the illuminating light. The fluorescence is then detected by a camera. This method allows the image to be captured by the camera with increased contrast. Accordingly, the present invention provides a multi-leaf collimator for a radiotherapeutic apparatus, comprising at least one leaf having a fluorescent marker. The fluorescent marker will usually emit light of a wavelength longer than the incident light, allowing suitable filters to be provided in order to distinguish the light emitted by the markers. A suitable material for use in the fluorescent markers is ruby. The present invention also provides a radiotherapeutic apparatus comprising a multi-leaf collimator as defined above, and a camera arranged to view the fluorescent markers. A source of illumination for the fluorescent markers is ideally monochromatic, or nearly so. The camera can have a filter arranged to substantially prevent light of the wavelength emitted by the source of illumination from entering the camera, thereby improving the contrast of the image. The radiotherapeutic apparatus can also comprise a source of illumination that is optically co-located with a radiation source, to allow the radiation field that will be emitted to be checked visually by an operator. The co-located source is preferably substantially monochromatic, emitting substantially no light at the wavelength of the fluorescent markers. A filter can then be placed over an output of the radiotherapeutic apparatus, for blocking light of the wavelength of the fluorescent markers and thereby enhancing the contrast of the image that is taken of the fluorescent markers.

    Radiotherapy apparatus
    55.
    发明授权
    Radiotherapy apparatus 有权

    公开(公告)号：US10549125B2

    公开(公告)日：2020-02-04

    申请号：US16042190

    申请日：2018-07-23

    申请人： Elekta AB (Publ)

    发明人： Per Harald Bergfjord ,  Francesco Gnoato

    IPC分类号： A61N5/01 ,  A61N5/10

    摘要： A radiotherapy apparatus includes a rotatable drum on which is mounted a gantry arm carrying a radiation source. The arm extending from the drum to a location of the radiation source is offset from the axis of rotation of the drum and oriented towards the axis. The radiotherapy apparatus further includes a mechanism configured to apply a tilt to the arm at one or more rotational orientations of the drum. The rotatable drum is supported on wheels beneath the drum, and the mechanism is an eccentric mechanism within the wheels and is configured to apply the tilt to the arm via the wheels.