A method for determining the 3D location of a catheter distal end portion in a patient's body, the distal end portion including an electrode, the method comprising: (a) placing first and second body-surface patches on the patient in positions such that body region of interest is therebetween; (b) driving an alternating current between the patches; (c) measuring the voltage at the electrode and substantially contemporaneously capturing a 2D fluoroscopic image of the region of interest; and (d) determining the 3D location of the catheter distal end portion from the image and the measured voltage. A primary application of this method is 3D navigation during cardiac interventional procedures.

The subject matter of the invention of the present application is non-invasive equipment for monitoring blood flows and/or respiratory cycles of a human or animal body, comprising at least one segment of conductive elastomer with variable resistance arranged so as to extend over the circumference of the body element and sensitive to the length of the circumference of said element, means for capturing said length by virtue of said variable resistance and supplying a signal representing said length, and means for processing said signal, comprising means for extracting parameters of the blood flows and/or respiratory cycles to be monitored.

A magnetic resonance (MR) imaging device (10) repeatedly executes a navigator pulse sequence (40) to generate navigator data in image space as a function of time, and a motion signal (44) of an anatomical feature that moves with a physiological cycle (e.g. respiration) as a function of time is extracted from the navigator data. A concurrent physiological signal (16) as a function of time is generated by a physiological monitor (12, 14) concurrently with the repeated execution of the navigator pulse sequence. A gating time offset (50) 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 (36) using gating times defined as occurrence times of gating events detected by the physiological monitor modified by the gating time offset.

A method includes receiving sensor data, including audio data, of a user at an electronic device. The method also includes identifying respiratory phases of the user's breathing based on the sensor data. The method further includes converting the audio data into image data and identifying an abnormal sound associated with the user's breathing based on the image data. In addition, the method includes determining a pulmonary condition of the user based on the abnormal sound and the identified respiratory phases.

Methods and apparatus are provided for planning and delivering radiation treatments by modalities which involve moving a radiation source along a trajectory relative to a subject while delivering radiation to the subject. In some embodiments the radiation source is moved continuously along the trajectory while in some embodiments the radiation source is moved intermittently. Some embodiments involve the optimization of the radiation delivery plan to meet various optimization goals while meeting a number of constraints. For each of a number of control points along a trajectory, a radiation delivery plan may comprise: a set of motion axes parameters, a set of beam shape parameters and a beam intensity.

Methods and apparatus are provided for planning and delivering radiation treatments by modalities which involve moving a radiation source along a trajectory relative to a subject while delivering radiation to the subject. In some embodiments the radiation source is moved continuously along the trajectory while in some embodiments the radiation source is moved intermittently. Some embodiments involve the optimization of the radiation delivery plan to meet various optimization goals while meeting a number of constraints. For each of a number of control points along a trajectory, a radiation delivery plan may comprise: a set of motion axes parameters, a set of beam shape parameters and a beam intensity.

A ventilation measurement device includes a fastening mechanism capable of permanently or detachably fastening the ventilation measurement device to a belt which can be worn around a person's chest. The device includes a substrate coupled to the fastening mechanism and capable of receiving tensional forces transmitted from the flexible belt through the fastening mechanism. A strain gauge is mounted on said substrate and is configured to output a signal with a functional relationship with said tensional forces to a controller unit. The controller unit is configured to receive and process the signal to produce processed data from the strain gauge signal, and to control a transmitter configured to transmit processed data to an external receiver.

An apparatus for sequestering and releasing compounds into the air is provided. The apparatus includes a card with a first side and a second side, and a plurality of compound-sequestering structures affixed to the first side. Each of the plurality of compound-sequestering structures is configured to release a compound into the air when heated to a first temperature.

The subject of the invention is a device for monitoring patient's vital functions, in particular for measuring respiratory and heart rate. This is achieved by using a piezoelectric transducer which also forms with measuring electrode a measuring capacitor. In addition, a comparator capacitor is used to increase resistance to changes in the measuring conditions.

The invention provides a multi-sensor system for monitoring a patient's respiratory rate. The system features an impedance pneumography sensor featuring at least two electrodes and a processing circuit configured to measure an impedance pneumography signal and a 3 axis accelerometer) that attaches to the patient's torso and measures an ACC signal indicating movement of the chest or abdomen that is also sensitive to respiratory rate. The signals are collectively processed, e.g. with the adaptive filter to determine a value for the respiratory rate.