A motion compensation system for tracking and compensating for patient motion during a medical imaging scan comprises an optical marker comprising an optically visible pattern and a mounting portion; a first optical detector positioned to digitally image the optically visible pattern along a first line of sight; a second optical detector positioned to digitally image the optically visible pattern along a second line of sight; a tracking engine configured to determine a pose of the object in six degrees of freedom by analyzing images from the first and second optical detectors; and a controller interface configured to generate tracking information based on the pose and to electronically transmit the tracking information to a scanner controller to enable compensation within a medical imaging scanner for object motion.

Systems, devices, and methods for tracking and compensating for patient motion during a medical imaging scan

The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.

Method and apparatus to detect transponder tagged objects, for example during medical procedures

A jacket for radio frequency (RF) shielding a Magnetic Resonance Device (MRD) from external environment electromagnetic interference during its operation, which allows for homogenized imaging conditions. The RF shielding jacket is sized and shaped like an envelope to accommodate the MRD, with at least a portion of the RF shielding jacket including an electromagnetic interference shield. The RF shielding jacket is also combined with passive temperature insulating properties.

MRI RF shielding jacket

The present invention provides, in a magnetic resonance imaging device (MRD) comprising (a) a main longitudinal axis with a distal and proximal ends; (b) an open bore extended along the axis and terminated by an aperture located in the proximal end; and (c) a closure assembly which is shaped to fit the aperture; an RF shielding conduit (RFSC), having apertures shaped to permit passage of medical equipment tubing from the external environment of the MRD to inner space of the bore, affixed to the closure assembly, wherein the conduit is characterized by a length (l) and width (w), l:w ratio is greater than a predefined value n, thereby providing RF shielding.

RF shielding conduit in an MRI closure assembly

A shutting assembly for a magnetic resonance imaging device (MRD) bore aperture, comprising at least one first movable portion and at least one second portion affixed to the MRD, wherein the shutting assembly further comprising a normally closed or normally open sliding mechanism. The sliding mechanism couples at least one first moveable portion to at least one second portion affixed to the MRD, thereby enabling a reciprocal movement of at least one first moveable portion parallel to the MRD bore aperture in an upwards and downwards directions in respect to at least one second portion affixed to the MRD.

A shutting assembly for closing an entrance of an mri device

In a magnetic resonance tomography local coil arrangement and a method for processing signals received thereby at least one local coil is fashioned to receive at least one reception signal and at least one amplifier is provided that amplifies the at least one reception signal. A frequency converter generates at least one intermediate frequency signal from the at least one reception signal the intermediate frequency of the intermediate frequency signal differing from the reception signal frequency of each reception signal. An analog-digital converter converts the analog intermediate frequency signal into a digitized signal. A shielding device shields against at least radio-frequency signals, the shielding device surrounding at least the analog-digital converter. At least one frequency filter is arranged between the at least one local coil and the analog-digital converter, the frequency filter exhibiting a transmission range for signals with the intermediate frequency of an intermediate frequency signal. The digitized signal is transmitted from the local coil arrangement.

Mr signal transmission in a local coil arrangement

A local coil system for a magnetic resonance system including at least one local coil for capturing magnetic resonance (MR) signals and at least one energy receiving antenna for inductively receiving energy for the local coil system from a temporally varying magnetic field is provided. The at least one energy receiving antenna is or may be tuned to an energy transfer frequency that is lower than a Larmor frequency of the MR signals to be captured and higher than approximately 20 kHz.

Local coil system, transmitting device, magnetic resonance system and method for the wireless transfer of energy to a local coil system

A magnetic resonance tomography device has a local coil that is fashioned to receive a magnetic resonance signal. This device has a detector system that is fashioned to detect a position of the local coil on the basis of electromagnetic waves that are affected by the position of the local coil and can be differentiated from the magnetic resonance signal. A method to detect a position of a local coil in a magnetic resonance tomography device Is implemented in this manner as well.

Magnetic resonance tomography apparatus with a local coil and method to detect the position of the local coil

A local coil for an imaging system, in particular an MRI scanner, is provided. The local coil is an MRI scanner local coil within which the head of a patient may be positioned, and that includes at least one shim coil. A conductor of a shim coil of the at least one shim coil is disposed in a region for a molded nape section of the patient.

Local shim coil within a local coil for local B0 homogenization in an MRT examination

A magnetic resonance image recording unit for recording at least part of a patient during a magnetic resonance examination is presented. The magnetic resonance image recording unit has a first housing wall, a patient receiving area which is at least partially enclosed by the first housing wall, and a motion sensor unit for detecting a movement of the patient. The motion sensor unit has at least one motion sensor element which is arranged in a section of a side of the first housing wall facing away from the patient receiving area.

Magnetic resonance image recording unit and a magnetic resonance device having the magnetic resonance image recording unit

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