Abstract: Ultrasound method for extracting information from signal components relating to spatial locations in a target region such as for example image reconstruction in the spatial and temporal frequency domain comprises the steps of: Transmitting an unfocussed acoustic wave in a target region; extracting information of the scatterers in the target region from signal components relating to spatial locations of the target region by applying a backpropagation algorithm to the radiofrequency signals generated by transformation of the reflected acoustic waves and which radiofrequency signals has been transformed in the frequency-wavenumber domain and transformed back to the time spatial domain after backpropagation processing, the system provides the further step of optimizing the extracted information by applying corrections to the radio frequency received signals in the frequency-wavenumber domain. The invention relates also to an ultrasound system for carrying out said method.

Abstract: Ultrasound method for extracting information from signal components relating to spatial locations in a target region such as for example image reconstruction in the spatial and temporal frequency domain comprises the steps of: Transmitting an unfocussed acoustic wave in a target region; extracting information of the scatterers in the target region from signal components relating to spatial locations of the target region by applying a backpropagation algorithm to the radiofrequency signals generated by transformation of the reflected acoustic waves and which radiofrequency signals has been transformed in the frequency-wavenumber domain and transformed back to the time spatial domain after backpropagation processing, the system provides the further step of optimizing the extracted information by applying corrections to the radio frequency received signals in the frequency-wavenumber domain. The invention relates also to an ultrasound system for carrying out said method.

Abstract: A method of generating 2D or 3D maps of MRI T1 and T2 relaxation times by acquiring 2D or 3D MRI gradient-echo images and extracting the T1 and T2 values from the images, wherein MRI images are acquired using a combination of gradient-echo sequences, including a first MRI image acquired using a SSFP-FID (Steady State Free Precession-Free Induction Decay) acquisition sequence; two further images acquired using a Dual-Echo SSFP acquisition sequence; and the T1 and T2 values are extracted for each image pixel or voxel from the corresponding MRI signals.

Abstract: A method of generating 2D or 3D maps of MRI T1 and T2 relaxation times by acquiring 2D or 3D MRI gradient-echo images and extracting the T1 and T2 values from the images, wherein MRI images are acquired using a combination of gradient-echo sequences, including a first MRI image acquired using a SSFP-FID (Steady State Free Precession-Free Induction Decay) acquisition sequence; two further images acquired using a Dual-Echo SSFP acquisition sequence; and the T1 and T2 values are extracted for each image pixel or voxel from the corresponding MRI signals.