Abstract:
PROBLEM TO BE SOLVED: To provide methods for adjusting injection protocols with respect to each individual patient.SOLUTION: A step is included for specifying a patient transfer function based on data specific to the patient, wherein the patient transfer function predicts enhancement at desired level, which is output from one or more regions of interest in an individual patient, in response to a predetermined input. A step is included in which, when a fluid containing a contrast-enhancing fluid is diffused, by using scanning data obtained by test-scanning the one or more regions of interest, the output of the enhancement level due to the diffusion of the fluid is determined in synchronization at a plurality of points from each of the one or more regions of interest. By using at least several operation data obtained through the test scanning, the patient transfer function is updated, and a predetermined input is determined through a numerical optimization technique. Injection protocols for individual patient is determined when the predetermined input is input in the patient transfer function, thereby generating the enhancement at desired level in the one or more regions of interest. It is preferable that the injection protocols are managed in relation to diagnostic imaging procedure.
Abstract:
PROBLEM TO BE SOLVED: To provide a syringe assembly, a syringe interface used having various types of syringe assembly, and an adapter.SOLUTION: The syringe assembly connectable to an injector having a syringe interface and a driving member includes a barrel portion 110a containing a fluid to be pressurized, and a syringe portion 100a having an exit 132a connected to the barrel portion 110a so as to allow a fluid to flow to the barrel portion 110a and flow back therefrom. The syringe assembly is formed separately from the syringe portion 100a. and includes an adapter 200 that has a plurality of portions. The syringe assembly includes an attaching mechanism having only two portions that engage so that the adapter 200 is immovably connected to the syringe portion 100a, the adapter 200 being configured so as to be connectable to the injector syringe interface.
Abstract:
PROBLEM TO BE SOLVED: To provide devices, systems and methods for delivery of a pharmaceutical fluid to a patient, and, especially for delivery of a contrast medium to a patient during a medical injection procedure. SOLUTION: A fluid injection apparatus includes at least one pressurizing mechanism and at least a first fluid container (for example, syringe or a bulk container) operably associated with the at least one pressurizing mechanism. The first fluid container is adapted to contain a first fluid to be injected. The fluid injection apparatus also includes a controller operably associated with the at least one pressurizing mechanism. The controller includes a programming system to allow programming of an injection protocol including, for example, a plurality of phases. At least one parameter generator determines parameters of at least one of the plurality of phases based at least in part upon the injection procedure. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a more appropriate imaging effect by providing an injection condition required for obtaining a desired imaging effect. SOLUTION: A lesion plotting method includes the steps of: injecting a small amount of a contrast agent from a syringe 8 only for time Tn and measuring a change in the blood concentration of the contrast agent by using an imaging apparatus 2; adding data based on the change in the blood concentration of the contrast agent at the time Tn over the time Tc required for injecting the contrast agent for an amount required for diagnosing and predicting the imaging effect for the injection required time Tc; and displaying the predicted imaging effect and urging to decide whether or not to change the injection condition of the contrast agent. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To measure a radioactive agent using a detector system.SOLUTION: A fluid path receives at least one aliquot of a radiopharmaceutical. The fluid path locates the aliquot within a positioner formed to have a concave configuration. A detector is located at a certain axial distance from the concave surface and determines the level of radioactivity of the aliquot. Alternatively, the fluid path may be free of concave and a variable attenuator may be placed between the fluid path and the detector. The variable attenuator may have a concavity that is based on the concavity of the fluid path so that the detector's ability to read the radioactivity is optimized. A method for forming an aliquot of a radiopharmaceutical in a concave fluid passage includes arranging a detector to a position separated from the concave surface by a certain distance to optimize reading of spectral energy emitted from the aliquot and activity and determine radioactivity regardless of the position of the aliquot in the passage.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for determining a parameter for a contrast medium injection protocol to be performed on a patient.SOLUTION: A model is provided that describes the diffusion of a fluid from the injected point of the fluid to the patient's pulmonary artery region and ascending aorta region. The model makes it possible to predict that an output of a predetermined enhancement level will be made from the regions, and determines a physiological variable value regarding to the patient's cardiopulmonary function when into the model are input one discrete data point obtained from a first time enhancement curve associated with the pulmonary artery region and one discrete data point obtained from a second time enhancement curve associated with the ascending aorta region. Each of the discrete data points represents a pair of measured values on the time enhancement curve corresponding to the associated region. In addition, when a parameter for the injection protocol is determined by applying the physiological parameter to the model, a desired level of enhancement output from the pulmonary artery region and the ascending aorta region is thereby caused during a diagnostic imaging on the patient.
Abstract:
PROBLEM TO BE SOLVED: To provide endorectal coils and associated interface devices capable of providing greater overall flexibility and higher quality images and spectroscopic results from MR signals.SOLUTION: An intracavity probe for use with a magnetic resonance system includes: a pair of coil loops arranged in a phased array configuration; a pair of decoupling circuits; a pair of output cables; and a spacer material positioned adjacent to an anterior surface of the coil loops. Each coil loop has a drive capacitor and a tuning capacitor. Each decoupling circuit is connected across the tuning capacitor of one of the coil loops. Each output cable is connected at a first end thereof across the drive capacitor of one of the coil loops such that each of the drive capacitors is provided with a separate ground.
Abstract:
PROBLEM TO BE SOLVED: To obtain an image and a spectrum of an internal anatomical structure using an intracavity probe for use with a magnetic resonance (MR) system.SOLUTION: The intracavity probe houses within its balloon-type enclosure a single-element quadrature coil sensitive to both the vertical and horizontal components of an MR signal. The quadrature coil by means of its output line is designed to plug into a dedicated interface device with which to interface the quadrature coil with the MR system. Drive capacitors within the coil in conjunction with the electrical length of the output line and phase shifting networks within the interface device enable complete decoupling of the quadrature coil from the transmit fields generated by the MR system. Preamplifier, power splitting and combining networks within the interface device process voltage signals of the MR signal and enable them to be conveyed to the input port(s) of the MR system.
Abstract:
PROBLEM TO BE SOLVED: To provide an almost improved device, system and method for facilitating the determination/formation or regulation of the transfer function of a patient or the model (or the parameter of the model) of the reaction of the patient to the injection of a medicine.SOLUTION: This method for controlling the injection of a medical fluid in the patient using an injector in medical procedure includes a process for collecting the data corresponding to a patient reaction curve produced from the injection of the fluid, a process for determining at least one mathematical model for entering data and a process for controlling the injection of the fluid in the patient by controlling the injector during the medical procedure to form patient reaction at least partially based on the mathematical model.