公开(公告)号：US11119170B1

公开(公告)日：2021-09-14

申请号：US16899370

申请日：2020-06-11

Applicant: SPINTECH, INC.

Inventor： E. Mark Haacke ,  Yongsheng Chen

IPC: G01R33/48 ,  G01R33/561 ,  G01R33/56

Abstract: Systems and methods for high-resolution STAGE imaging can include acquisition of relatively low-resolution k-space datasets with two separate multi-echo GRE sequences. The multi-echo GRE sequences can correspond to separate and distinct flip angles. Various techniques for combining the low-resolution k-space datasets to generate a relatively high-resolution k-space are described. These techniques can involve combining low-resolution k-space datasets associated with various echo types. The STAGE imaging approaches described herein allow for rapid imaging, enhanced image resolution with relatively small or no increase in MR data acquisition time.

公开(公告)号：US20210389401A1

公开(公告)日：2021-12-16

申请号：US16899357

申请日：2020-06-11

Applicant: SPINTECH, INC.

Inventor： E. Mark Haacke ,  Yongsheng Chen

IPC: G01R33/48 ,  G01R33/561 ,  G01R33/56 ,  A61B5/055

Abstract: Systems and methods for high-resolution STAGE imaging can include acquisition of relatively low-resolution k-space datasets with two separate multi-echo GRE sequences. The multi-echo GRE sequences can correspond to separate and distinct flip angles. Various techniques for combining the low-resolution k-space datasets to generate a relatively high-resolution k-space are described. These techniques can involve combining low-resolution k-space datasets associated with various echo types. The STAGE imaging approaches described herein allow for rapid imaging, enhanced image resolution with relatively small or no increase in MR data acquisition time.

公开(公告)号：US11249159B2

公开(公告)日：2022-02-15

申请号：US16899357

申请日：2020-06-11

Applicant: SPINTECH, INC.

Inventor： E. Mark Haacke ,  Yongsheng Chen

IPC: G01V3/00 ,  G01R33/48 ,  A61B5/055 ,  G01R33/56 ,  G01R33/561

Abstract: Systems and methods for high-resolution STAGE imaging can include acquisition of relatively low-resolution k-space datasets with two separate multi-echo GRE sequences. The multi-echo GRE sequences can correspond to separate and distinct flip angles. Various techniques for combining the low-resolution k-space datasets to generate a relatively high-resolution k-space are described. These techniques can involve combining low-resolution k-space datasets associated with various echo types. The STAGE imaging approaches described herein allow for rapid imaging, enhanced image resolution with relatively small or no increase in MR data acquisition time.

公开(公告)号：US10451697B2

公开(公告)日：2019-10-22

申请号：US15659353

申请日：2017-07-25

Applicant: SPINTECH, INC.

Inventor： E. Mark Haacke

IPC: G01V3/00 ,  G01R33/561 ,  G01R33/567 ,  A61B5/055 ,  G01R33/50 ,  G01R33/565 ,  G01R33/48 ,  A61B5/00 ,  G01R33/24

Abstract: Variable flip angle techniques with constraints for reconstructing MR images include a processor generating a T1app map representing a spatial distribution of T1app within an anatomical region using a first MR dataset corresponding to a first flip angle (FA) and a second MR dataset corresponding to a second FA. The processor can estimate a first and second transmit RF field maps by scaling the T1app map by a first constant value of T1 associated with a first tissue type and a second constant value of T1 associated with a second tissue type, respectively. The processor can generate a third transmit RF field map using the first and second transmit RF field maps, and use the third transmit RF field map to construct MR images of the anatomical region. Weighted subtraction images can be created with improved contrast-to-noise ratio compared to images of the first and second MR datasets.