摘要:
A method for estimating the physiological parameters defining the edema induced upon infusion of fluid from an intraparenchymally placed catheter including; acquisition of patient-specific medical data; estimation of pertinent tissue microstructure based on the patient-specific medical data and/or generalized information derived or drawn from one or more of the following: experience, literature, modeling, studies, research, analysis; acquisition of information about delivery parameters, and/or delivery device geometry, and/or fluid properties, such as: delivery device trajectory, flow rate, pressure, catheter diameter, catheter profile, fluid viscosity, fluid molecular size; and computing a field of values of predicted extracellular volume fraction over the tissue region using the information obtained above. According to a further aspect, a method of infusing or planning and/or monitoring an infusion of a contrast agent such that the distribution of such agent can be detected by medical data acquisition and observing and/or measuring the backflow length along the catheter track.
摘要:
The visualization of procedural guidelines for a medical procedure, in which a medical instrument is shown in an image representation of a body portion including an area in which a medical procedure is to be carried out, wherein, in the vicinity of the functional portion of the instrument, regions or locations are indicated which are of special relevance to the procedure according to established guidelines for said procedure.
摘要:
A method for estimating the physiological parameters defining the edema induced upon infusion of fluid from an intraparenchymally placed catheter including; a) acquisition of patient-specific medical data; b) estimation of pertinent tissue microstructure based on the patient-specific medical data and/or generalized information derived or drawn from one or more of the following: experience, literature, modeling, studies, research, analysis; c) acquisition of information about delivery parameters, and/or delivery device geometry, and/or fluid properties, such as: delivery device trajectory, flow rate, pressure, catheter diameter, catheter profile, fluid viscosity, fluid molecular size; and d) computing a field of values of predicted extracellular volume fraction over the tissue region using the information obtained in (b) and (c). According to a further aspect, a method of infusing or planning and/or monitoring an infusion of a contrast agent such that the distribution of such agent can be detected by means of medical data acquisition (e.g. MRI, CT, x-ray, ultrasound, SPECT, PET) and observing and/or measuring the backflow length along the catheter track.
摘要:
Surgery is performed on a patient with a novel device by: excising tissue from tissue mass within a patient to create a cavity within the tissue mass; inserting a novel device of this invention into the cavity; shaping a flexible expandable component of the device to adjust dimensions on the flexible expandable component; providing a liquid into the component through the liquid input port; and controlling pressure or flow rate of the liquid in the component to move the liquid through the multiple openings and into the cavity. The device has a liquid inlet port, an exterior surface having length, width and depth, and multiple openings in the surface distributed throughout the length, width and depth to act as liquid delivery ports; the exterior surface of the liquid delivery device being shapeable by internal pneumatic pressure or hydraulic pressure to better fit inside dimensions of a surgical cavity; the multiple openings deliver the liquid through the multiple openings.
摘要:
A medical imaging processing method includes: using an imaging method to acquire at least first and second data sets of a region of interest of a patient's body, with at least one image acquisition parameter being changed so that first and second data sets yield different contrast levels relating to different substance and/or tissue types, and wherein the at least one acquisition parameter used to obtain the first data set is selected to enhance the contrast between one of the substance and/or tissue types relative to other substance and/or tissue types, and the at least one acquisition parameter used to obtain the second data set is selected to enhance the contrast between a different one of the substance and/or tissue types relative other substance and/or tissue types, thereby to optimize the contrast between at least three different substance and/or tissue types; and processing the two data sets to identify the different tissue types and/or boundaries therebetween.
摘要:
A method for determining a backflow of a substance along a track of a delivery device includes: a) obtaining parameters that influence the flow of the fluid or substance; b) acquiring information about delivery data; and c) computing the backflow along the delivery device using the information in steps a) and b).
摘要:
A method for identifying target regions in a tissue for local drug delivery, wherein functional and/or structural anatomical data such as edema and/or resection cavity is captured by an imaging system, and wherein the anatomical data is evaluated by segmentation techniques such as region-growing-based methods with computer assistance to determine a margin around a resection cavity and/or the volume of edema, the margin and/or the volume of edema being the target tissue for local drug delivery.
摘要:
A medical imaging processing method includes: using an imaging method to acquire at least first and second data sets of a region of interest of a patient's body, with at least one image acquisition parameter being changed so that first and second data sets yield different contrast levels relating to different substance and/or tissue types, and wherein the at least one acquisition parameter used to obtain the first data set is selected to enhance the contrast between one of the substance and/or tissue types relative to other substance and/or tissue types, and the at least one acquisition parameter used to obtain the second data set is selected to enhance the contrast between a different one of the substance and/or tissue types relative other substance and/or tissue types, thereby to optimize the contrast between at least three different substance and/or tissue types: and processing the two data sets to identify the different tissue types and/or boundaries therebetween.
摘要:
A method for identifying target regions in a tissue for local drug delivery, where functional and/or structural anatomical data such as edema and/or resection cavity is captured by an imaging system, and where the anatomical data is evaluated by segmentation techniques such as region-growing-based methods with computer assistance to determine a margin around a resection cavity and/or the volume of edema, the margin and/or the volume of edema being the target tissue for local drug delivery.
摘要:
A method for identifying advantageous and non-advantageous infusion regions in the tissue includes capturing at least one of (i) functional anatomical data and (ii) structural anatomical data. The captured anatomical data is evaluated with computer assistance. Based on the evaluating step, the method includes determining infusion distribution information, such as directional and velocity information.