Andrew J Wheaton

US Patent:

20130234707, Sep 12, 2013

Filed:

Mar 8, 2012

Appl. No.:

13/415188

Inventors:

Mitsue Miyazaki - Mount Prospect IL, US
Andrew J. Wheaton - Shaker Heights OH, US

Assignee:

Toshiba Medical Systems Corporation - Otawara-shi
Kabushiki Kaisha Toshiba - Minato-ku

International Classification:

G01R 33/48
G01R 33/44

US Classification:

324309, 324318

Abstract:

A magnetic resonance imaging (MRI) is configured to effect magnetic resonance angiography (MRA) data acquisition sequences including electrocardiogram (ECG) triggered fresh blood imaging (FBI) images respectively associated with systolic and diastolic phases of ECG cycles. An operator input and display interface may be configured to provide operator options for independently controlling at least one imaging sequence parameter to have a different value for each of systolic and diastolic phase images in an FBI MRI data acquisition sequence.

US Patent:

20210325498, Oct 21, 2021

Filed:

Apr 17, 2020

Appl. No.:

16/851758

Inventors:

- Otawara-shi, JP
Andrew James WHEATON - Vernon Hills IL, US

Assignee:

CANON MEDICAL SYSTEMS CORPORATION - Otawara-shi

International Classification:

G01R 33/561
G01R 33/56
G01R 33/483

Abstract:

A method and apparatus are provided to perform controlled aliasing in parallel imaging (CAIPI) using time shifts between the radio frequency (RF) excitation pulses and the waveform of the slice-select gradient field to shift respective sampling points within the two-dimensions of k-space corresponding to phase encoding. Thus, a CAIPI sampling pattern is generated using time shifts, rather than by modulating the RF excitation pulses or gradient fields.

US Patent:

20170356972, Dec 14, 2017

Filed:

Jun 10, 2016

Appl. No.:

15/179014

Inventors:

- Otawara-shi, JP
Andrew J. WHEATON - Vernon Hills IL, US

International Classification:

G01R 33/385
G01R 33/48
G01R 33/561

Abstract:

Magnetic resonance imaging (MRI) systems and methods to effect MRI data acquisition with reduced noise are described. A readout gradient, having a first polarity used to acquire and store MRI data in k-space memory during analog-to-digital conversion (ADC) of MR RF signals during one TR interval, is continued at substantially a same amplitude and vector direction and used as an image volume selection gradient during a transmitted RF excitation pulse that begins a next TR interval before the readout gradient transitions to an opposite polarity. The acquired k-space data is then used to generate an MR image.

US Patent:

20170356973, Dec 14, 2017

Filed:

Jun 13, 2016

Appl. No.:

15/180761

Inventors:

- Otawara-shi, JP
Andrew J. WHEATON - Vernon Hills IL, US

International Classification:

G01R 33/385
G01R 33/48
G01R 33/561

Abstract:

Magnetic resonance imaging (MRI) systems and methods to effect MRI data acquisition with reduced noise in fast spin echo (FSE) and spin echo (SE) implementations are described. The improved MRI data acquisition is performed by acquiring k-space data while maintaining a constant or near constant slice select gradient amplitude throughout a sequence kernel. The acquired k-space data can then be used to generate an MR image.