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MULTI-GROUP MAGNETIC RESONANCE IMAGING PRESCRIPTION WITH DIFFERENT SCANNING PARAMETERS FOR EACH GROUP

IP.com Disclosure Number: IPCOM000236072D
Publication Date: 2014-Apr-04
Document File: 7 page(s) / 720K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention provides flexibility to a user to select different slice spacing and thickness for different groups in a multi-group two dimensional (2D) prescription. The user graphically selects slice group. The user modifies the thickness and spacing via corresponding user interface. There is a variable slice thickness and slice spacing in each group in the multi-group two dimensional (2D) prescriptions. User is allowed to use higher NEX for high resolution group prescription to boost signal-to-noise ratio (SNR). The invention is extensible to all 2D pulse sequences.

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MULTI-GROUP MAGNETIC RESONANCE IMAGINGPRESCRIPTION WITH DIFFERENT SCANNING PARAMETERS FOR EACH GROUP

FIELD OF INVENTION

The invention generally relates to a magnetic resonance imaging system and more particularly to a technique to select different slice spacing and thickness for different groups in a multi-group two dimensional (2D) prescription.

BACKGROUND OF THE INVENTION

Generally, user is forced to use same slice thickness and spacing for all groups in multi-slice-multi-angle (MSMA) prescription to cover an anatomy. Such same slice thickness and spacing is not required in anatomies, such as, brain where different slice spacing and thickness is required for sella and general routine. In pelvic, long bones, such as, legs, user either performs different scans with a desired spacing and thickness or user compromises on either scan time or coverage or resolution if done in same scan.

A conventional technique relates to a method of acquiring at least one clinical magnetic resonance imaging (MRI) of a subject. First survey image is acquired with a first field of view. The first survey image has a first spatial resolution. A first region of interest and at least one anatomical landmark in the first survey image are located. Position and orientation of the first region of interest is determined using anatomical landmarks. The position and the orientation of the first region used for planning a second survey image are determined. Second survey image is acquired with a second field of view. The second survey image has a second spatial resolution. The second spatial resolution is higher than the first spatial resolution. A geometry planning for the anatomical region of interest is generated using the second survey image. A diagnostic image of anatomical region of interest is acquired using the geometry planning.

However, the conventional technique uses two different surveys with different spatial resolution, field of view (FOV) and thickness. Result of the first survey is used as an input to generate second set of survey images which further have different spatial resolution, field of view and thickness.

Hence, there exists a need to have desired prescription in the same scan without compromising on resolution, scan time or scan coverage.

BRIEF DESCRIPTION OF THE INVENTION

The invention provides flexibility to a user to select different slice spacing and thickness for different groups in a multi-group two dimensional (2D) prescription. The user graphically selects slice group. The user modifies thickness and spacing via corresponding user interface. There is a variable slice thickness and slice spacing in each group in the multi-group two dimensional (2D) prescriptions. User is allowed to use higher NEX for high resolution group prescription to boost signal-to-noise ratio (SNR). The invention is extensible to all 2D pulse sequences.


DETAILED DESCRIPTION OF THE INVENTION

The invention provided flexibility to a user to select different slice spacing a...