MRI apparatus with improved thermal control system and method for operating said thermal control system

    公开(公告)号:US20240241198A1

    公开(公告)日:2024-07-18

    申请号:US18413758

    申请日:2024-01-16

    申请人: Esaote S.p.A.

    摘要: An MRI apparatus with an enhanced thermal control system, the apparatus including:



    a static magnetic field generation unit with at least two magnetic poles at a predetermined distance and forming a gantry for housing an object to be imaged;
    one heater for heating the magnetic poles and/or the magnetic yoke;
    one or more temperature sensors measuring the temperature of the at least one pole and/or of the yoke;
    a thermal control unit, including:
    a processing unit, with control software;
    the processing unit having input ports for receiving temperature measurement signals from the one or more temperature sensors;
    the processing unit having output ports for feeding driving signals to the one heater;
    the control software including instructions to generate the driving signals of the one heater.

    Ultrasound imaging method and ultrasound imaging system therefor

    公开(公告)号:US11510656B2

    公开(公告)日:2022-11-29

    申请号:US16774879

    申请日:2020-01-28

    摘要: An ultrasound imaging method includes providing a digital representation of the shape of a surface or boundary of an anatomic region or organ; acquiring an ultrasound image by ultrasound scanning the anatomic region or organ; and combining the digital representation of the shape of the surface or boundary of the anatomic region or organ by registering the digital representation of the shape of the surface or boundary and the ultrasound image as a function of the difference in position of selected reference points on the digital representation of the surface or boundary and on the ultrasound image, the position of the reference points on the ultrasound image being determined by tracking the probe position at the reference points at the anatomic region or organ of a real body and in a spatial reference system, in which the anatomic region or the organ of the real body is placed.

    Method for quantifying the elasticity of a material by ultrasounds

    公开(公告)号:US11058397B2

    公开(公告)日:2021-07-13

    申请号:US15536269

    申请日:2015-12-29

    申请人: Esaote S.p.A.

    摘要: A method for quantifying the elasticity of a material by ultrasounds, comprising the generation of one excitation point, for generating a shear wave, a measurement of the shear wave at a plurality of lines of sight placed in a region of interest at different predetermined distances from the first excitation point, the calculation of the speed of the measured shear wave and the assessment, by calculation, of a mean stiffness value of the material in the region of interest on the basis of the measured speed of the shear wave. In the acquired image, a second excitation point is defined, in such a position that the region of interest is interposed between the first excitation point and the second excitation point. The method for the second excitation point is carried out, for calculating the speed of the shear wave for the second excitation point, and the assessment by calculation of the mean stiffness value is carried out on the basis of the average between the speed of the shear wave measured for the first excitation point and the speed of the shear wave measured for the second excitation point.

    Method and system for performing baseband digital receiver beamforming on ultrasound signals

    公开(公告)号:US10444333B2

    公开(公告)日:2019-10-15

    申请号:US15385087

    申请日:2016-12-20

    申请人: ESAOTE S.p.A.

    发明人: Giovanni Bini

    IPC分类号: G01S7/52 A61B8/00 G10K11/34

    摘要: Methods and systems are provided that perform baseband beamforming of ultrasound signals. The methods and systems obtain receive signals from transducers of an ultrasound probe and demodulate the receive signals to obtain complex receive signals having in-phase (I) and quadrature (Q) components. The methods and systems apply time delay and phase correction to the complex receive signals to form delayed complex receive signals before summing the delayed complex receive signals to produce a coherent receive signal. The phase correction includes applying coarse and fine corrections where the coarse correction is calculated as a multiple of a sampling time and the fine correction is calculated as a fraction of the sampling time. The methods and systems apply the coarse and fine corrections contemporaneously by multiplying the complex receive signal by a complex carrier delayed by a multiple of the sampling time and delayed by the fraction of the sampling time.

    Method and apparatus for acquiring and fusing ultrasound images with pre-acquired images

    公开(公告)号:US10043272B2

    公开(公告)日:2018-08-07

    申请号:US14854421

    申请日:2015-09-15

    摘要: A method of fusing ultrasound images with pre-acquired images includes acquiring a first 3D ultrasound image in real-time; identifying at least one known reference pattern or object within a pre-acquired 3D image and the 3D ultrasound image; registering the real-time 3D ultrasound image with the pre-acquired 3D image by using the reference pattern or object; fusing the 3D ultrasound images of a sequence of real-time 3D ultrasound images; with the pre-acquired 3D image using data of the co-registration; and displaying fusion tomographic images, each including the corresponding real-time ultrasound image and the pre-acquired image. The registration between real-time 3D ultrasound images and the pre-acquired 3D image is performed continuously in the background by continuing to acquire the real-time 3D ultrasound images and to register them with the pre-acquired 3D images using the reference pattern or patterns or the object or objects.