摘要:
A control apparatus is disclosed, for a medical examination apparatus, for controlling a first injection of contrast agent for an examination, a breathing command and a recording of an examination image of an examination area of a patient after a circulation time has elapsed. In at least one embodiment, the control apparatus includes a control unit for controlling the start of the injection after the start of the breathing command. This makes it possible to provide reliable evaluation capability for the examination images that are produced, even for examinations with a circulation time which is short in comparison to the breathing command, for example perfusion examinations.
摘要:
At least one embodiment of the invention relates to a method and/or a computed-tomography system and/or a computed-tomography system assembly for displaying tomographic records, with a first computed-tomography display data record displaying structures of a first type and of a second type by way of a complex recording technique, with an area of interest with structures of a second type being marked there and with relative positions of the structures being determined, with a second computed-tomography display data record subsequently being created by a simpler recording technique, in which only structures of the first type can be identified, and the structures of the second type are made visible in this display on the basis of the known relative positions with respect to the visible structures of the first type or at least their position, or a surrounding boundary.
摘要:
A method and a dual-source CT are disclosed. In at least one embodiment, the projection data of the integrating and of the counting detector from a quarter rotation of the gantry is used jointly for reconstruction of a first tomographic image dataset, the energy-resolved projection data of the counting detector from at least one half rotation of the gantry being used for reconstruction of at least a second material-selective tomographic image dataset, and at least one tomographic result image dataset being formed by overlaying the first tomographic image dataset with the material selection of the second image dataset.
摘要:
In a method and an imaging system for implementing a CT-assisted or MRT-assisted minimally-invasive interventional procedure at an anatomical location inside the body of a patient, the inspiratory or respiratory position of the patient within the respiratory cycle of the patient is continuously detected and a measurement value, identifying a current position of the patient within the respiratory cycle, is detected at a point in time that a CT or MRT slice image of the anatomical location is obtained. This measurement value is stored together with the image data of the slice image so that the measurement value and the image data can be retrieved together and displayed together.
摘要:
In a method for operating a computed tomography device for reducing the load on at least one technical component of the computed tomography device during operation of the at least one technical component, as well as a computed tomography device and a data storage medium that implement such a method, for at least one scan parameter of the computed tomography device affecting the at least one technical component an extreme value is defined, the method being an operating mode for the computed tomography device is selected in which the settable value for the at least one scan parameter affecting the at least one technical component is limited to a certain percentage below or above the extreme value for the operation of the at least one technical component.
摘要:
A method is disclosed for marking out a guide line of a penetration instrument entering an object along a penetration channel. In at least one embodiment, the penetration channel into the object is firstly determined based on image data of the object generated by an imaging recording system, the penetration channel being defined by a penetration point into the object and at least one penetration direction. Then, at least two light fan beams are emitted from different directions in such a fashion that the line of intersection of the fan beams is coaxial with the penetration direction. A marking out apparatus is further disclosed for carrying out the method, along with a control device suitable to this end, and an imaging recording system including such a marking out apparatus.
摘要:
In a method and device for medical imaging, a number of input parameters with regard to an image exposure are imported into a controller of the imaging device, that associate a desired image quality with a defined image exposure region. A number of control parameters are determined corresponding to each input parameter. The controller supplies each control parameter to the image acquisition apparatus for acquiring the image exposure of the examination region with the desired local image quality.
摘要:
In a method as well as a device for planning and/or monitoring an interventional high-frequency thermoablation, 3D image data of a region (1) of interest of a body are acquired with a tomographical imaging apparatus and are presented on an image display device. In the method, a database is provided in which, for at least one interventional instrument available for high-frequency thermoablation, a volume region for at least one high-frequency power generable with the instrument is established in which a thermoablation is achieved in a tissue with the instrument at this high-frequency power. Upon marking at least one ablation position in the image representations, a 3D object representing the volume region or a volume region derived from this is then mixed in at least semi-transparently at this ablation position. The method and the associated device enable a better planning and monitoring of an interventional high-frequency thermoablation by the user.
摘要:
A method, a tomography system and a contrast agent injector for optimizing the time sequence of contrast agent examinations are disclosed, an automatically controlled text announcement system being used for instructing the behavior of a patient before or during the examination, and it being possible for a multiplicity of different announcement texts of different announcement duration to be temporally triggered and announced by the text announcement system. In at least one embodiment, on the basis of the announcement duration of one announcement text to be announced during the examination, the temporal behavior of this text relative to the work sequence of the contrast agent injector and/or of the tomography system is calculated, and inserted in the timing of the contrast agent injector via an electronic connection between the tomography system and the contrast agent injector is one time pause that leads to a synchronization of the work sequence of the contrast agent injector with the announcement duration of the current text announcement in such a way that the text announcement ends at a predetermined triggering instant of the combined work sequence of the tomography system and contrast agent injector.
摘要:
At least one embodiment of the invention relates to a method and/or a computed-tomography system and/or a computed-tomography system assembly for displaying tomographic records, with a first computed-tomography display data record displaying structures of a first type and of a second type by way of a complex recording technique, with an area of interest with structures of a second type being marked there and with relative positions of the structures being determined, with a second computed-tomography display data record subsequently being created by a simpler recording technique, in which only structures of the first type can be identified, and the structures of the second type are made visible in this display on the basis of the known relative positions with respect to the visible structures of the first type or at least their position, or a surrounding boundary.