Labeling area determining apparatus, magnetic resonance apparatus and method for determining tilt of labeling area

• US 9,435,872 B2
• Filed: 07/03/2013
• Issued: 09/06/2016
• Est. Priority Date: 07/06/2012
• Status: Active Grant

• Current Assignee: GE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.), General Electric Company
• Original Assignee: General Electric Company
• Inventors: Ikezaki, Yoshikazu, Uno, Marie
• Primary Examiner(s): FULLER, RODNEY EVAN
• Application Number:
  US13/934,778
• Publication Number:
  US 20140009155A1
• Time in Patent Office: 1,161 Days
• Field of Search: 324/309
• US Class Current: 1/1
• CPC Class Codes: G01R 33/56 Image enhancement or correction, e.g. subtraction or averaging techniques , e.g. improvement of signal-to-noise ratio and resolution
• CPC Class Codes: G01R 33/5616 using gradient refocusing, e.g. EPI
• CPC Class Codes: G01R 33/56366 Perfusion imaging

Abstract

A labeling area determining apparatus is provided. The labeling area determining apparatus includes a detecting device configured to detect a tilt of a head relative to a body axial direction of a subject to be imaged by an arterial spin labeling method, and a determining device configured to determine a tilt of a labeling area of spins relative to the body axial direction of the subject, based on the tilt of the head detected by the detecting device.

Claims

1. A magnetic resonance apparatus comprising:

a detecting device which is configured to detect a tilt of a head relative to a body axis direction of a subject to be imaged by an arterial spin labeling method; and

a determining device configured to determine a tilt of a labeling area of spins relative to the body axial direction of the subject, based on the tilt of the head detected by the detecting device.

2. The magnetic resonance apparatus according to claim 1, wherein the detecting device is configured to detect the tilt of the head, based on a slice direction of an imaging set of the head.

3. The magnetic resonance apparatus according to claim 2, wherein the detecting device is configured to detect a rotational angular component of the head about an anterior posterior (AP) axis, and wherein the determining device is configured to determine the tilt of the labeling area, based on the rotational angular component.

4. The magnetic resonance apparatus according to claim 1, wherein the detecting device is configured to detect the tilt of the head, based on a result of analysis of a preliminary image of the head.

5. The magnetic resonance apparatus according to claim 4, wherein the detecting device is configured to detect a rotational angular component of the head about an anterior posterior (AP) axis, and wherein the determining device is configured to determine the tilt of the labeling area, based on the rotational angular component.

6. The magnetic resonance apparatus according to claim 1, wherein the detecting device is configured to detect a rotational angular component of the head about an anterior posterior (AP) axis, and wherein the determining device is configured to determine the tilt of the labeling area, based on the rotational angular component.

7. The magnetic resonance apparatus according to claim 6, wherein the determining device is configured to determine the tilt of the labeling area such that a perpendicular direction to the labeling area becomes a direction rotated about the AP axis by a rotational angle corresponding to the rotational angular component from the body axial direction.

8. The magnetic resonance apparatus according to claim 7, wherein the detecting device is configured to determine a three-dimensional rotation matrix indicative of the tilt of the head and configured to detect a rotational angular component about the AP axis, based on matrix elements of the three-dimensional rotation matrix.

9. The magnetic resonance apparatus according to claim 6, wherein the detecting device is configured to determine the tilt of the labeling area such that a perpendicular direction to the labeling area becomes a direction rotated about the AP axis by a rotational angle corresponding to the rotational angular component from the body axial direction.

10. The magnetic resonance apparatus according to claim 9, wherein the detecting device is configured to determine a three-dimensional rotation matrix indicative of the tilt of the head and configured to detect a rotational angular component about the AP axis, based on matrix elements of the three-dimensional rotation matrix.

11. The magnetic resonance apparatus according to claim 6, wherein the detecting device is configured to determine a three-dimensional rotation matrix indicative of the tilt of the head and configured to detect a rotational angular component about the AP axis, based on matrix elements of the three-dimensional rotation matrix.