Patents by Inventor Martti Kalke
Martti Kalke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11020079Abstract: The application relates to an X-ray imaging unit (100) for X-ray imaging. The unit comprise a processor part (372), a gantry part (120), an X-ray source part (124) for emitting X-rays, and an X-ray imaging detector part (126) for receiving the X-rays from the source part. The gantry part comprises the source and detector parts. The processor part is configured to control the source and detector parts in order to obtain (205, 216) an image data. The processor part is further configured to determine (208) at least one reference structure (235, 236) of a patient (201) from the image data and determine (212) a position of a head (237) of the patient on a grounds of the at least one reference structure.Type: GrantFiled: January 24, 2019Date of Patent: June 1, 2021Assignee: PALODEX GROUP OYInventors: Martti Kalke, Esa Suuronen
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Patent number: 10939887Abstract: A system and method of x-ray imaging includes obtaining a plurality of x-ray projection images of a patient. At least one object in the plurality of x-ray projection images is identified. A priori information of the identified at least one object is obtained. A three dimensional volume is reconstructed from the plurality of x-ray projection images. The a priori information is used to refine the acquisition of x-ray projection images or presentation of the three dimensional volume.Type: GrantFiled: January 27, 2017Date of Patent: March 9, 2021Assignee: PaloDEx Group OyInventors: Joonas Erik Sandholm, Martti Kalke
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Publication number: 20190223821Abstract: The application relates to an X-ray imaging unit (100) for X-ray imaging. The unit comprise a processor part (372), a gantry part (120), an X-ray source part (124) for emitting X-rays, and an X-ray imaging detector part (126) for receiving the X-rays from the source part. The gantry part comprises the source and detector parts. The processor part is configured to control the source and detector parts in order to obtain (205, 216) an image data. The processor part is further configured to determine (208) at least one reference structure (235, 236) of a patient (201) from the image data and determine (212) a position of a head (237) of the patient on a grounds of the at least one reference structure.Type: ApplicationFiled: January 24, 2019Publication date: July 25, 2019Inventors: Martti KALKE, Esa SUURONEN
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Patent number: 10278666Abstract: X-ray imaging systems and methods for exposure control in three-dimensional X-ray imaging include acquiring at least one image with an X-ray emitter and an X-ray receiver. At least one physical characteristic of the object to be imaged is determined from the at least one image. At least one exposure parameter value based is determined based upon the at least one physical characteristic of the object to be imaged. The X-ray emitter and X-ray receiver acquire a plurality of projection images about the object to be imaged using at least one exposure parameter value. A three-dimensional X-ray image is reconstructed from the plurality of projection images.Type: GrantFiled: June 13, 2014Date of Patent: May 7, 2019Assignee: PaloDEx Group OyInventors: Esa Eronen, Markus Rintamäki, Martti Kalke
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Publication number: 20170135665Abstract: A system and method of x-ray imaging includes obtaining a plurality of x-ray projection images of a patient. At least one object in the plurality of x-ray projection images is identified. A priori information of the identified at least one object is obtained. A three dimensional volume is reconstructed from the plurality of x-ray projection images. The a priori information is used to refine the acquisition of x-ray projection images or presentation of the three dimensional volume.Type: ApplicationFiled: January 27, 2017Publication date: May 18, 2017Applicant: PaloDEx Group OyInventors: Joonas Erik Sandholm, Martti Kalke
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Patent number: 9592020Abstract: A system and method of x-ray imaging includes obtaining a plurality of x-ray projection images of a patient. At least one object in the plurality of x-ray projection images is identified. A priori information of the identified at least one object is obtained. A three dimensional volume is reconstructed from the plurality of x-ray projection images. The a priori information is used to refine the acquisition of x-ray projection images or presentation of the three dimensional volume.Type: GrantFiled: June 23, 2014Date of Patent: March 14, 2017Assignee: PaloDEx Group OyInventors: Joonas Erik Sandholm, Martti Kalke
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Publication number: 20150366525Abstract: A system and method of x-ray imaging includes obtaining a plurality of x-ray projection images of a patient. At least one object in the plurality of x-ray projection images is identified. A priori information of the identified at least one object is obtained. A three dimensional volume is reconstructed from the plurality of x-ray projection images. The a priori information is used to refine the acquisition of x-ray projection images or presentation of the three dimensional volume.Type: ApplicationFiled: June 23, 2014Publication date: December 24, 2015Applicant: PALODEX GROUP OYInventors: Joonas Erik Sandholm, Martti Kalke
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Publication number: 20150359501Abstract: X-ray imaging systems and methods for exposure control in three-dimensional X-ray imaging include acquiring at least one image with an X-ray emitter and an X-ray receiver. At least one physical characteristic of the object to be imaged is determined from the at least one image. At least one exposure parameter value based is determined based upon the at least one physical characteristic of the object to be imaged. The X-ray emitter and X-ray receiver acquire a plurality of projection images about the object to be imaged using at least one exposure parameter value. A three-dimensional X-ray image is reconstructed from the plurality of projection images.Type: ApplicationFiled: June 13, 2014Publication date: December 17, 2015Applicant: PALODEX GROUP OYInventors: Esa Eronen, Markus Rintamäki, Martti Kalke
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Patent number: 9004757Abstract: A medical imaging assembly includes a first imaging plate and a second imaging plate for acquiring a first and a second medical image. A container is configured to receive and hold the first imaging plate and the second imaging plate in a predetermined overlapping orientation. An image reader receives the first and second medical images and produces first and second digital medical images. A processor creates a composite image of the first and second digital images. A method of acquiring a medical image includes identifying an overlapped region of a lower image and an upper image. An alignment transformation is identified by matching the overlapped regions of the upper and lower images. The upper and lower images are aligned based upon the alignment transformation. A composite medical image is created from the upper image and the lower image.Type: GrantFiled: March 24, 2010Date of Patent: April 14, 2015Assignee: PaloDEx Grou OyInventors: Juuso Siren, Jari Taskinen, Kaapo Paulanto, Tuomas Tölli, Martti Kalke
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Patent number: 8335358Abstract: A method for reconstructing a medical image of an object in a reconstruction process, where image data is achieved by a medical imaging system by collecting a real measured projection image data of said object, in which method an antipriori component is deter-mined for modelling artifacts caused by the imaging system and/or reconstruction method. The antipriori component is used for attenuating said artifacts from the medical image of said object to be reconstructed in said reconstruction process.Type: GrantFiled: March 29, 2007Date of Patent: December 18, 2012Assignee: PaloDex Group OyInventor: Martti Kalke
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Patent number: 8284196Abstract: The invention relates to a method, system and computer program product for reconstructing a model of an object of projection data advantageously gathered by X-ray imaging. It is characteristic for the invention, that after a point of at least one object of interest from at least two projection images is marked as a seed point, where said point locates inside the object of interest in the corresponding projection image, the model of the object of projection data is reconstructed by adding plurality of elementary object elements around the marked seed point in each direction until a criteria, such as likelihood criteria, is fulfilled in said direction, where priori information relating to the object of interest is connected with said elementary object element.Type: GrantFiled: February 24, 2006Date of Patent: October 9, 2012Assignee: GE Healthcare Finland OyInventor: Martti Kalke
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Publication number: 20110235874Abstract: A medical imaging assembly includes a first imaging plate and a second imaging plate for acquiring a first and a second medical image. A container is configured to receive and hold the first imaging plate and the second imaging plate in a predetermined overlapping orientation. An image reader receives the first and second medical images and produces first and second digital medical images. A processor creates a composite image of the first and second digital images. A method of acquiring a medical image includes identifying an overlapped region of a lower image and an upper image. An alignment transformation is identified by matching the overlapped regions of the upper and lower images. The upper and lower images are aligned based upon the alignment transformation. A composite medical image is created from the upper image and the lower image.Type: ApplicationFiled: March 24, 2010Publication date: September 29, 2011Applicant: PaloDEx Group OyInventors: Juuso Siren, Jari Taskinen, Kaapo Paulanto, Tuomas Tolli, Martti Kalke
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Publication number: 20110176717Abstract: A method, device and software for performing tomographic imaging with several offset values in such a way that the first imaging phase is performed by scanning at least a part of the object to be imaged by following the first arc of the first rotating movement to produce the first image information, —the offset of the imaging is changed between imaging phases during imaging, —at least one other imaging phase is performed with at least one changed offset to produce second image information of at least part of the object, —the said image information produced by different offsets is combined into three-dimensional image information.Type: ApplicationFiled: October 2, 2009Publication date: July 21, 2011Applicant: PaloDEx Group OyInventors: Juuso Siren, Petri Matti Jouhikainen, Esa Suuronen, Henri Setala, Martti Kalke
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Patent number: 7860300Abstract: The invention relates to a method and system for determining a sharp panoramic image constructed from a group of projection images, especially the invention relates to defining a structure of the panoramic X-ray image of an area of a dentition and of jaws. The structure of a panoramic image to be generated from a group of projection images is determined by at least two crucial parameters, namely parameters of the central surface S of the sharp layer and thickness t(s) of the sharp layer, using penalty function F(S,t), which is at least a penalty function F3(S,t) of low-frequency changes in the computed panoramic image corresponding to the choices S and t(S). After computing F3(S,t) the best center surface and thickness function (in other words the sharpest layer of the panoramic image) is obtained by minimizing said penalty function F(S,t) over parameter space.Type: GrantFiled: August 18, 2005Date of Patent: December 28, 2010Assignee: PaloDEx Group OyInventors: Samuli Siltanen, Martti Kalke, Henri Setälä, Esa Suuronen
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Patent number: 7853056Abstract: A tomographic reconstruction method or device for calculation of a 3-dimensional image data or 2-dimensional slice from a limited amount of 2-dimensional or 1-dimensional projection images using iterations to calculate 3D image elements, comprising transformation of measured data to transform domain.Type: GrantFiled: December 1, 2005Date of Patent: December 14, 2010Inventor: Martti Kalke
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Publication number: 20090237402Abstract: The invention relates to a method, system and computer program product for reconstructing a model of an object of projection data advantageously gathered by X-ray imaging. It is characteristic for the invention, that after a point of at least one object of interest from at least two projection images is marked as a seed point, where said point locates inside the object of interest in the corresponding projection image, the model of the object of projection data is reconstructed by adding plurality of elementary object elements around the marked seed point in each direction until a criteria, such as likelihood criteria, is fulfilled in said direction, where priori information relating to the object of interest is connected with said elementary object element.Type: ApplicationFiled: February 24, 2006Publication date: September 24, 2009Applicant: GE Healthcare Finland OyInventor: Martti Kalke
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Publication number: 20080240525Abstract: A method for reconstructing a medical image of an object in a reconstruction process, where image data is achieved by a medical imaging system by collecting a real measured projection image data of said object, in which method an antipriori component is deter-mined for modelling artifacts caused by the imaging system and/or reconstruction method. The antipriori component is used for attenuating said artifacts from the medical image of said object to be reconstructed in said reconstruction process.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Inventor: Martti Kalke
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Publication number: 20080187090Abstract: The invention relates to a tomographic apparatus for the three-dimensional modelling of an object to be imaged, said tomographic apparatus comprising at least one irradiation source for irradiating the object to be modelled from at least two different directions, and at least one receiving means for receiving the radiation transmitted through the object. The reconstruction parameter is a parameter which determines the behavior in iteration of a reconstruction representing the object to be modelled. The tomographic apparatus comprises means for modelling an object to be imaged by using a non-iterative tomographic modelling algorithm for determining reconstruction parameters for a more accurate computation to be conducted with an iterative tomographic modelling algorithm, in which the computation is conducted from a region of interest in the object.Type: ApplicationFiled: April 12, 2006Publication date: August 7, 2008Inventors: Martti Kalke, Samuli Siltanen, Henri Setala
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Patent number: 7274766Abstract: This invention relates to a medical X-ray device arrangement for producing three-dimensional information of an object in a medical X-ray imaging, the medical X-ray device arrangement comprising an X-ray source for X-radiating the object from at least two different directions and a detector for detecting the X-radiation to form projection data of the object.Type: GrantFiled: December 30, 2004Date of Patent: September 25, 2007Assignee: Instrumentarium CorporationInventors: Jari Kaipio, Samuli Siltanen, Martti Kalke, Ville Petteri Kolehmainen, Matti Lassas
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Publication number: 20070127801Abstract: A tomographic reconstruction method or device for calculation of a 3-dimensional image data or 2-dimensional slice from a limited amount of 2-dimensional or 1-dimensional projection images using iterations to calculate 3D image elements, comprising transformation of measured data to transform domain.Type: ApplicationFiled: December 1, 2005Publication date: June 7, 2007Inventor: Martti Kalke