# US 2014/0155734 A1 · Method and pet apparatus for localizing an object > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155734 A1 - Document ID: US20140155734A1 - Status: Published application - Kind: A1 - Application number: 14/079,693 - Filed: 2013-11-14 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Siemens Aktiengesellschaft - Applicants: Siemens Aktiengesellschaft - Inventors: Sebastian SCHMIDT - Web page: https://patentgrep.com/patent/US20140155734A1 ## CPC - G01R 33/481: {MR combined with positron emission tomography [PET] or single photon emission computed tomography [SPECT]} - G01T 1/1603: {with a combination of at least two different types of detectors} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00) ## Abstract A method for localization of an object in an examination area of an examination object, which includes an organ, is disclosed. In an embodiment, the method includes detection of a repeating movement of the organ in the examination area; detection of PET data of the examination area during the movement; and localization of the object in the examination area by use of the PET data for at least two different repeating movement sections of the movement. ## Claims ### Claim 1 A method for localization of an object in an examination area of an examination object, which includes an organ, the method comprising: detecting a repeating movement of the organ in the examination area; detecting PET data of the examination area during the movement; and localizing the object in the examination area by use of the PET data for at least two different repeating movement sections of the movement. ### Claim 2 (depends on 1) The method of claim 1, wherein MR data of the examination area is acquired at the same time as the PET data, so that identical voxel coordinates of the PET data and MR data correspond to the same anatomical assignments within the examination object. ### Claim 3 (depends on 2) The method of claim 2, wherein the movement of the organ is detected with the aid of the MR data. ### Claim 4 (depends on 2) The method of claim 2, wherein the organ is segmented with the MR data in order to detect the movement of the organ together with a movement of an environment of the organ, and wherein each MR image created from the MR data is registered with a further MR image created from the MR data and following the MR image. ### Claim 5 (depends on 1) The method of claim 1, wherein a breathing movement or a pulse beat of the examination object is detected, and depending on the breathing movement or the pulse beat, the movement of the organ is determined indirectly. ### Claim 6 (depends on 1) The method of claim 1, wherein the object is localized by use of the PET data in relation to more than two different movement sections, and wherein the examination area, together with the correspondingly highlighted object, is presented as a type of film during a period which corresponds to one of the repeating movements of the organ. ### Claim 7 (depends on 1) The method of claim 1, wherein the PET data is detected for a number of the repeating movements of the organ, wherein the respective PET data detected, in each case, during a time interval during which the organ moves along a respective specific one of the movement sections is assigned to a PET dataset which corresponds to the respective movement section, and wherein the object is at least one of localized and presented for one of the movement sections on the basis of the PET data of the PET dataset corresponding to the respective movement section. ### Claim 8 (depends on 1) The method of claim 1, wherein the following cases are distinguished for the localization of the object the object possesses two separate spatial locations for at least a respective one of the movement sections, so that the object has split into two separate subobjects for the respective movement section, the object moves synchronously with the movement of the organ, and no part of the object moves synchronously with the movement of the organ. ### Claim 9 (depends on 1) The method of claim 1, wherein a first area of the object or in the vicinity of the object is defined outside the organ, wherein a second area of the object or in the vicinity of the object is defined inside the organ, and wherein a displacement of the first area in relation to the second area during the movement is shown. ### Claim 10 (depends on 1) The method of claim 1, wherein, for each voxel assigned to the object on the basis of the PET data, a distance to a fixed point is determined, and wherein a number of the voxels are shown via the distance. ### Claim 11 A PET apparatus for localization of an object in an examination area of an examination object, which includes an organ, the PET apparatus comprising: a control unit configured to activate a positron emission detector of the PET apparatus; and an image processing unit configured to receive PET data of the examination area acquired by the positron emission detector, wherein the PET apparatus is configured to detect a repeating movement of the organ in the examination area, to acquire the PET data during the movement and to localize the object in the examination area with the aid of the PET data in at least two different movement sections of the movement. ### Claim 12 (depends on 11) The PET apparatus of claim 11, wherein the PET apparatus is a combined MR/PET device, wherein the control unit is also configured to activate a magnetic resonance system of the MR/PET device, wherein the image processing unit is also configured to receive MR data of the examination area recorded by the magnetic resonance system, which is acquired at the same time as the PET data, and wherein the combined MR/PET device is configured, with the aid of the MR data, to detect the movement of the organ. ### Claim 13 (depends on 1) A PET apparatus for localization of an object in an examination area of an examination object, which includes an organ, the PET apparatus comprising: a control unit configured to activate a positron emission detector of the PET apparatus; and an image processing unit configured to receive PET data of the examination area acquired by the positron emission detector, wherein the PET apparatus is configured to detect a repeating movement of the organ in the examination area, to acquire the PET data during the movement and to localize the object in the examination area with the aid of the PET data in at least two different movement sections of the movement, wherein the PET apparatus is configured to perform the method of claim 1. ### Claim 14 (depends on 1) A computer program product, loadable directly into a memory of a programmable controller of a PET apparatus, comprising a program including program segments for executing the method of claim 1 when the program is executed in the controller of the PET apparatus. ### Claim 15 (depends on 1) An electronically-readable data medium including electronically-readable control information stored thereon, designed such that, when the data medium is used in a controller of a PET apparatus, it executes the method of claim 1. ### Claim 16 (depends on 3) The method of claim 3, wherein the organ is segmented with the MR data in order to detect the movement of the organ together with a movement of an environment of the organ, and wherein each MR image created from the MR data is registered with a further MR image created from the MR data and following the MR image.