摘要:
The invention relates to a reactor driven in an oscillatory-rotary manner about its fixed, preferably vertical, axis, for preferably biotechnological and pharmaceutical applications. By means of its process-intensifying properties for mixing, suspension, gaseous material transport, heat transfer, irradiation and particle retention, the applicability on the industrial scale is ensured. The reactor which succeeds without a shaft seal permits particularly robust production with respect to sterile technique with avoidance of cleaning and cleaning validation required when the reactor is constructed as a single-use reactor.
摘要:
In a magnetic resonance method and apparatus to measure a sodium content in tissue in a first slice, a determination of a blood volume in blood vessels in the first slice is made, and an MR acquisition sequence to acquire MR data of a sodium-23 magnetization from the first slice is implemented. A signal proportion of the MR data that originates from the sodium-23 magnetization in blood vessels is calculated based on the determined blood volume in tissue. This signal proportion is subtracted from a total signal of the MR data to obtain a corrected signal that is proportional to the sodium content in tissue. The sodium content in tissue is calculated from the corrected signal.
摘要:
A method for determining a change over time in a biomarker in a region to be examined of a patient is provided. The change is determined from magnetic resonance data using a magnetic resonance measuring system with sequences and protocols for measuring the biomarkers by functional resting state connectivity by rsfMRI, perfusion values, magnetic resonance spectra of voxels, or morphometry of organs. A control unit has programs which evaluates the biomarker and a data memory which stores the results of the evaluation and additional data. During a first examination, a quantity result of the biomarkers is determined and stored in the data memory. During a follow-up examination, at least one previous item of the result and additional data from the first examination stored in the data memory are used for determining a quantitative change in the biomarker.
摘要:
A method and a device for imaging a volume section by way of PET data are described. With the proposed solution the PET data of the volume section are acquired by way of a positron emission detector, and the MR data of the volume section are acquired by way of a magnetic resonance system. In at least one embodiment, with the aid of the MR data, PET voxels within the volume section are determined from which radiation occurring due to an annihilation is emitted. The image data are reconstructed from the PET data in that it is taken into account that the PET data are generated only by radiation from the PET voxels.
摘要:
In a method to measure characteristic structure sizes of the human brain, which structure sizes can be used as biomarkers for a diagnosis of Alzheimer's, using a magnetic resonance device, manual and/or automatic localization of the hippocampus takes place in a preliminary magnetic resonance acquisition, followed by selection of at least one measurement axis that proceeds through the hippocampus. For each selected measurement axis, magnetic resonance data are acquired for a longitudinal, in particular rod-shaped, acquisition region proceeding along the measurement axis. Determination of the spatially resolved structure sizes is implemented from the magnetic resonance data.
摘要:
A method is disclosed for implementing an imaging examination method. In at least one embodiment, the method includes creating an overview data record containing angiography data relating to a patient; simulating flow conditions in vessels of the patient; determining a strain on the vascular walls with the aid of the simulation; identifying vascular regions, in which the strain on the vascular wall exceeds a threshold value and implementing an imaging examination in at least one of the identified vascular regions.
摘要:
In a method and system for automated association of an assessor with an assessment task (in particular an evaluation of an image data set) an assessor database is used that contains assessors as well as selection information associated with assessors and task information associated with assessment tasks. A medical assessment is automatically associated with an assessor using at least one decision rule, starting from the task information and with consideration of the relevant selection information.
摘要:
A method is disclosed for determining a PET image data record of a target area from PET image data recorded during a period using a combined PET device provided with an additional imaging modality, an attenuation map describing the absorption of photons in the imaging area being used for attenuation correction of the PET image data. In at least one embodiment of the method, as a function of at least one change in the attenuation in the imaging area during the period, the PET image data are divided into at least two PET image data groups of different time domains of the period and are evaluated differently with respect to consideration of the attenuation.
摘要:
The present invention provides a method for inactivating viruses and/or bacteria in medicinal-leech extracts by means of electromagnetic radiation.
摘要:
In a magnetic resonance method and apparatus to determine an examination image data set describing the temperature distribution within an examination subject (in particular a patient) using magnetic resonance an absolute temperature image data set of an examination region of the subject is acquired by magnetic resonance temperature imaging, a normal temperature data set of the examination region is determined, and the examination image data set is determined in a computerized processor by a comparison of the absolute temperature image data set with the normal temperature data set.