A dynamic bionic heart phantom is used for an MRI system, a control method and a testing method. The dynamic bionic heart phantom includes a bionic heart phantom, a control system, positive pressure devices and a negative pressure device; the bionic heart phantom includes a water tank and a heart phantom arranged in the water tank, and the heart phantom is connected to the control system through four air pipes; the control system includes an antimagnetic control device and a control PC, and the antimagnetic control device is composed of a measurement and control module, four proportional flow values, a power module and a magnetic shielding box; the positive pressure devices, including gas, gas cylinders and pressure reducing valves, are connected to two gas inlet interfaces of the control system respectively; and the negative pressure device includes a vacuum pump and a negative pressure container.

A system to generate images based on imaging data of a portion of a body and physiological event data associated with a physiological process of the body. The system is to identify a plurality of physiological cycles based on the physiological event data, determine a duration of each of the plurality of physiological cycles, determine a representative duration based on the durations of each of the plurality of physiological cycles, identify a first plurality of the plurality of physiological cycles based on a difference between the durations of the first plurality of physiological cycles and the representative duration, identify a second plurality of the plurality of physiological cycles different from the first plurality of the plurality of physiological cycles, determine a predetermined number of portions of each of the second plurality of the plurality of physiological cycles, accumulate imaging data acquired during respective portions of each of the second plurality of the plurality of physiological cycles to determine a set of accumulated imaging data for each of the predetermined number of portions, and generate a plurality of images, each of the plurality of images being generated based on a respective one of the sets of accumulated imaging data.

A subject information acquisition apparatus, comprises: a signal generation unit configured to generate a high-frequency signal corresponding to each of the frequencies; an acquisition unit configured to acquire a plurality of detection signals based on at least one of a reflection signal and a transmission signal; a signal selection unit configured to select at least one detection signal from the plurality of detection signals based on an index value of the plurality of detection signals; a coupling amount detecting unit configured to detect a coupling amount of near-field coupling due to an electric field between the antenna and the subject based on a detection signal; and a displacement detecting unit configured to generate a displacement signal indicating a displacement of the subject based on the coupling amount.

Apparatuses are described to accurately determine a gas concentration of a sample of a patient's breath. The apparatuses may include a sample compartment, a breath speed analyzer, a gas analyzer, and a processor. The sample compartment includes an inlet that receives the breath. The breath speed analyzer determines the speed of a portion of the breath. The gas analyzer determines a gas concentration. The processor includes an algorithm that determines a degree of non-homogeneity of the sample based on the speed, and a corrected gas concentration based on the degree of non-homogeneity. In some variations, the gas correction is determined independently of patient cooperation. Apparatuses may be tuned based on the intended population's expected breathing pattern ranges such that the sample compartment is filled with a homogenous end-tidal gas sample regardless of an individual's breathing pattern. These apparatuses are useful, for example, for end-tidal CO analysis. Methods are also described.

A 3D body scanner for generating 3D body models includes a first device that includes a depth sensor for acquiring depth data of a field of view of an object to be scanned. The 3D body scanner includes a first communication interface and a control unit, which is alternatively configured for processing the depth data. The 3D body scanner includes a second device that includes a sensing component for detecting the object to be scanned. The second device is designed for sending to the control unit, an activation signal after detecting the object to be scanned. The control unit is configured to activate at least the first device upon the acquisition of the depth data.

A magnetic resonance (MR) imaging device repeatedly executes a navigator pulse sequence to generate navigator data in image space as a function of time, and a motion signal of an anatomical feature that moves with a physiological cycle as a function of time is extracted from the navigator data. A concurrent physiological signal as a function of time is generated by a physiological monitor concurrently with the repeated execution of the navigator pulse sequence. A gating time offset is determined by comparing the motion signal of the anatomical feature as a function of time and the concurrent physiological signal as a function of time. The MR imaging device performs a prospective or retrospective gated MR imaging sequence using gating times defined as occurrence times of gating events detected by the physiological monitor modified by the gating time offset.

This disclosure provides a system (100) for determining patient (P) movement for a medical imaging system, comprising at least one marker (110), and at least one data processing unit (120), wherein the marker (110) is a solid configured to be swallowed by the patient (P). The marker (110) comprises a landmark forming component (111) configured to be detectable within the patient during a medical imaging procedure to determine the movement of the patient. The at least one data processing unit (120) is configured to obtain patient information data and/or medical imaging information data at least indicative for a type of medical imaging procedure intended for the patient. The at least one data processing unit (120) utilizes a computational model to estimate, based on one or more of the patient information data, the medical imaging information data and a configuration of the at least one marker, a position and/or distribution of the at least one marker inside the patient to a certain time and/or over a period of time after swallowing by the patient (P). The data processing unit (120) is configured to generate, based on the estimation of a distribution of the at least one marker, control data for timely controlling the medical imaging procedure.

A method, system and article of manufacture is disclosed. The method includes providing a spatial navigator outside of a thermal therapy region; receiving a plurality of analog-to-digital conversion (ADC) readouts from an MRI device at a plurality of time points, wherein the ADC readouts comprise a first ADC readout acquired at a first time point, and one or more additional ADC readouts acquired at subsequent time points; processing the ADC readouts to obtain a frequency of the spatial navigator at each of the time points; obtaining a main magnetic field (B.sub.0) drift of the MRI device based on the frequency of the spatial navigator at a particular time point and the frequency of the spatial navigator at the first time point; and obtaining the temperature change at the particular time point based on the B.sub.0 drift.

To create a 3D model of part of a cardiovascular system, two 2D images taken of different orientations of the cardiovascular system may be combined. The 2D images originate from video streams taken at different points in time, which comprise frames showing a beating heart, and thus a moving cardiovascular system. Because of this movement, not just any random set of two 2D images may result in useable 3D model. To select a proper set of two 2D images, a method is provided wherein said selection is based on cardiac cycle data. The cardiac cycle data may comprise heart activity data as a function of time and timing data on cycle events. These cycle events may be repetitive, as the same events occur with every heartbeat. The selected frames are preferably selected at, or approximately at, similar events.

According to the invention, a method for detecting at least one physiological signal (1) of a patient (7), wherein the method comprises the following method steps: monitoring at least a subsection (2) of a patient's surface (4) with a thermal camera (5) which generates consecutive video frames with multiple pixels (6) of the monitored subsection (2), wherein the subsection (2) of a patient's surface (4) includes at least a part of the mouth and/or nose area of the patient (7) as a region of interest (3); generating time-resolved temperature values of at least one pixel (8) of the region of interest (3); and generating a cardiac signal (9) as the physiological signal (1) based on the generated time-resolved temperature values. In this way, a possibility is provided for contactless tempera-ture-based monitoring of a patient in an easy and cost-efficient way.