摘要:
A method is disclosed for determining attenuation values for PET data of a patient. In at least one embodiment, the method includes detecting at least one accessory of a magnetic resonance imaging scanner and detecting the position and/or alignment of the accessory by way of an imaging measuring method; comparing the detected accessory with data from a database; and assigning an attenuation map, which is contained in the database, to attenuation values of the detected accessory and adapting the attenuation map to the detected position and/or alignment of the accessory.
摘要:
An optical scanning device is provided. The optical scanning device an excitation light source that is operable to illuminate the object to be scanned. An image detector is operable to detect excited emission rays through illumination of the object to be scanned by the excitation light source and imaging optics that dictate a focal distance. The image detector detects a scan image of the emission radiation of the object to be scanned with the highest level of image sharpness if the focal distance is maintained. A control device includes a distance sensor through which a distance between an optical scanning device and the object to be scanned can be measured, wherein maintenance of the focal distance as the function of the measured distance can be checked by the control device.
摘要:
A method and an apparatus are disclosed for imaging functional processes in the brain. In order to be able to correlate the results of MEG examinations with anatomical information and metabolic data, a positron emission tomography measurement is recorded in at least one embodiment by at least one radiation detector, a magnetic resonance imaging measurement is recorded by a coil and a radio-frequency antenna device and a magnetoencephalography measurement is recorded by a plurality of magnetic field sensors, the positron emission tomography measurement and the magnetic resonance imaging measurement being substantially undertaken at the same time, so that the records of the positron emission tomography measurement and the magnetic resonance tomography measurement are isocentric. In at least one embodiment, an evaluation apparatus is provided for carrying out a spatial correlation between the magnetoencephalography measurement and the magnetic resonance imaging measurement, so that registration between the magnetoencephalography measurement and the positron emission tomography measurement results.
摘要:
A computer-implemented method is disclosed for determining and displaying an access corridor to a target area in the brain of a patient, as well as an imaging arrangement suited to this. In at least one embodiment, the method includes a) generating a first image of the brain via positron emission tomography, b) discriminating the target area relative to its surroundings via electronic image processing, c) generating a second image of the brain via magnetic resonance imaging while acquiring at least one anatomical structure, d) generating a third image of the brain via an imaging method displaying physiological processes for identifying at least one functional area of the brain that must not be injured in any circumstances, e) determining an access corridor to the target area while omitting the at least one functional area of the brain, and f) generating and displaying a fourth image of the brain in which the target area, the at least one functional area of the brain, the at least one anatomical structure and the access corridor are displayed, wherein steps a) to d) are carried out, one after another in quick succession, in a single frame of reference without repositioning the patient, or are even carried out simultaneously.
摘要:
A system and method of evaluating the effectiveness of antiangionetic therapy is described. A patient or test animal is treated with an antiangionetic substance. Magnetic resonance imaging data is obtained prior to and subsequent to the treatment. The parameters of the imaging process are configured so that, by administering a intravascular contrast agent, the relative size of the microvascular and the total vascular volumes in a region of interest may be obtained, so as to form a vascular size index. The value of the vascular size index and other pharmacokinetic data obtained by the administration of a diffusible contrast agent are used to assess the efficacy of the treatment or the antiangionetic substance being studied.
摘要:
A method for exchanging image data with a number of image elements, which are respectively parameterized by a display value set, between a data source computer and a data query computer that each have a display device for the presentation of the image data, an input device for the input of control commands, and a data interface for the transmission and the reception of data via a remote data transfer network, including the steps: of copying image data on the data source computer and transmission to the data query computer, receiving the image data from the data source computer by the data query computer, and presentation of the image data on the display device of the data query computer, and these steps are repeated regularly or given alteration of image data. In order to selectively transfer among all data the public data but to have confidential data remain excluded from the transfer or at least the presentation on the receiving computer, the presentation of the image data is discriminated dependent on at least one of the display values in the display value set.
摘要:
Apparatus and process for UV irradiation and heat sterilization of fluid media, and in particular of liquids containing microorganisms and/or viruses.
摘要:
A method is disclosed for operating a hybrid medical imaging unit including a first imaging device of relatively high spatial resolution and a second nuclear medicine imaging device of relatively high sensitivity that respectively acquire imaging measurement signals from a common examination volume. In at least one embodiment, the method includes determining the duration of the measurement signal acquisition of one imaging device as a function of the duration of the measurement signal acquisition of the other imaging device, which is defined by the occurrence of a specific truncation criterion.
摘要:
A MHD pump, in an example embodiment, includes a fluid channel, an electrode pair that generates an electric field in the fluid channel, and an electromagnet that generates a magnetic field, the magnetic field lines of which intersect the electric field lines of the electric field. The fluid channel is defined in an exchangeable cassette.
摘要:
A method is disclosed for displaying a tissue containing a fluorescent dye at least in sections. In order to reduce interference signals, it is proposed to record a first fluorescent image during an illumination phase, and a second fluorescent image during a dark phase, and to correct the first fluorescent image by subtracting the second fluorescent image and to process it subsequently to form an overall image.