Method for automatic coil selection in a magnetic resonance apparatus

• US 7,924,007 B2
• Filed: 02/28/2008
• Issued: 04/12/2011
• Est. Priority Date: 03/02/2007
• Status: Active Grant

• Current Assignee: Siemens Healthineers AG (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Arnold, Thomas, Campagna, Swen
• Primary Examiner(s): Koval; Melissa J
• Assistant Examiner(s): Fetzner; Tiffany A
• Application Number:
  US12/038,945
• Publication Number:
  US 20080211502A1
• Time in Patent Office: 1,139 Days
• Field of Search: 324300-322, 600410-423
• US Class Current: 324/309
• CPC Class Codes: G01R 33/3415 comprising arrays of sub-coils , i.e. phased-array coils with flexible receiver channels
• CPC Class Codes: G01R 33/3664 Switching for purposes other than coil coupling or decoupling, e.g. switching between a phased array mode and a quadrature mode, switching between surface coil modes of different geometrical shapes, switching from a whole body reception coil to a local reception coil or switching for automatic coil selection in moving table MR or for changing the field-of-view G01R33/3671 takes precedence
• CPC Class Codes: G01R 33/56375 Intentional motion of the sample during MR, e.g. moving table imaging
• CPC Class Codes: G01R 33/56383 involving motion of the sample as a whole, e.g. multistation MR or MR with continuous table motion

Abstract

In a method for coil selection of a magnetic resonance apparatus, a determination of coil positions of the multiple coil devices of the magnetic resonance apparatus is made and a determination is also made of a number of coil groups, wherein a coil group is composed of at least one coil device. One or more coil groups is associated with positions of the support device, and the coil group that is associated with a position of the support device includes the coil devices that are suitable for use in that associated position of the support device. A control of one of the multiple coil groups dependent on the position of the support device.

Claims

1. A method for automatically selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, said method comprising the steps of:

during execution of said magnetic resonance data acquisition sequence, moving said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

for each coil device in said plurality of coil devices, associating a coil position of that coil device for each of the plurality of positions of said support device;

automatically electronically determining a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices and, in any two of said coil groups that are respectively associated with two adjacent regions of said support device, including at least a same one of said coil devices, as said selected coil device to be present within each of said two coil groups and automatically electronically identifying a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups; and

activating said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities when said support device is at said positions respectively associated with the plurality of coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

2. A method as claimed in claim 1 comprising:

also automatically determining a coil type of each of said coil devices, and using the respective types of the coils of the respective coil devices in automatically identifying said selected one of said coil groups.

3. A method as claimed in claim 1 comprising automatically electronically determining said plurality of coil groups before beginning execution of said magnetic resonance data acquisition sequence.

4. A method as claimed in claim 1 comprising automatically electronically determining said plurality of coil groups during execution of said magnetic resonance data acquisition sequence.

5. A method as claimed in claim 1 comprising automatically determining said plurality of coil groups by including said selected coil device therein in order to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

9. A method as claimed in claim 1 comprising mounting said plurality of coil devices in said support device.

10. A method as claimed in claim 1 comprising mounting said plurality of coil devices in a subject-receiving opening of said magnetic resonance apparatus.

6. A non-transitory computer-readable storage medium encoded with programming instructions for selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, and a drive unit that during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus, said non-transitory computer-readable storage medium being loadable into a computerized control unit of the magnetic resonance apparatus and said programming instructions causing said control unit, based on a coil position of each coil device associated with each of the plurality of positions of said support device, to:

automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in two of said coil groups that are respectively associated with two adjacent regions of said support device, include at least two of said coil devices that have overlapping fields of view, and automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups; and

activate said selected one of said coil groups dependent on the position of the support device during execution of said magnetic resonance data acquisition sequence in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

7. A method for automatically selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, said method comprising the steps of:

during execution of said magnetic resonance data acquisition sequence, moving said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus, including two adjacent positions of said support device comprising a first position and a second position of said support device;

with each coil device in said plurality of coil devices, associating a coil position of that coil device for each of the plurality of positions of said support device, by associating a first of said coil groups with said first position and a second of said coil groups with said second position, thereby giving said first of said coil groups a first detection region and said second of said coil groups a second detection region, with at least a portion of said first detection region overlapping at least a portion of said second detection region;

automatically electronically determining a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices and automatically electronically identifying a selected one of said coil groups from among said plurality of coil groups that is comprised of a coil device or coil devices associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said one of said coil groups; and

activating said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

8. A method as claimed in claim 7 comprising automatically electronically combining said first of said two coil groups and said second of said two coil groups to form a combined coil group, and associating said combined coil group with said first and second positions of said support device.

11. A magnetic resonance apparatus comprising:

a magnetic resonance scanner having a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to a magnetic resonance data acquisition sequence implemented with the magnetic resonance scanner, and a drive unit that, during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

an input unit that, for each coil device in said plurality of coil devices, allows a user to associate a coil position of that coil device for each of the plurality of positions of said support device; and

a control unit configured to automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in two of said coil groups that are respectively associated with two adjacent regions of said support device, and to select at least a same one of said coil devices, as said selected coil device to be present within each of said two coil groups, and to automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of a coil device or coil devices associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said one of said coil groups, and to activate said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the plurality of coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

12. A magnetic resonance apparatus as claimed in claim 11 wherein said control unit is configured to automatically determine said plurality of coil groups by including said selected coil device therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

13. A magnetic resonance apparatus comprising:

a magnetic resonance scanner having a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to a magnetic resonance data acquisition sequence implemented with the magnetic resonance scanner, and a drive unit that, during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

a detection unit that, for each coil device in said plurality of coil devices, detects a coil position of that coil device for each of the plurality of positions of said support device; and

a control unit, supplied with the respective coil positions from said detection unit, said control unit being configured to automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in any two of said coil groups that are respectively associated with two adjacent regions of said support device, to include at least a same one of said coil devices, as said selected coil device to be present within each of said two coil groups, and to automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices at detected positions associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said one of said coil groups, and to activate said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

14. A magnetic resonance apparatus as claimed in claim 13 wherein said control unit is configured to automatically determine said plurality of coil groups by including said selected coil device devices therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

15. A non-transitory computer-readable storage medium encoded with programming instructions for selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, and a drive unit that during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus, said non-transitory computer-readable storage medium being loadable into a computerized control unit of the magnetic resonance apparatus and said programming instructions causing said control unit, based on a coil position of each coil device associated with each of the plurality of positions of said support device, to:

automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in two of said coil groups that are respectively associated with two adjacent regions of said support device, include at least a same one of said coil devices in each of said two coil groups, as said selected coil device to be present within and automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices associated with respective positions of said support device that makes said one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups; and

activate said selected one of said coil groups dependent on the position of the support device during execution of said magnetic resonance data acquisition sequence in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

16. A method for automatically selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, said method comprising the steps of:

during execution of said magnetic resonance data acquisition sequence, moving said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

with each coil device in said plurality of coil devices, associating a coil position of that coil device for each of the plurality of positions of said support device;

automatically detecting, for each coil device in said plurality of coil devices, a coil position of that coil device for each of the plurality of positions of said support device;

automatically electronically determining a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices and, in any two of said coil groups that are respectively at detected positions for two adjacent regions of said support device, including at least a same one of said coil devices in each of said two coil groups, as said selected coil device to be present within and automatically electronically identifying a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups; and

activating said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

17. A method as claimed in claim 16 comprising automatically determining said plurality of coil groups by including said selected coil device therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

18. A method for automatically selecting at least one coil device grouping for use in a magnetic resonance data acquisition sequence executed in a magnetic resonance apparatus comprising a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to the magnetic resonance data acquisition sequence, said method comprising the steps of:

during execution of said magnetic resonance data acquisition sequence, moving said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus, including two adjacent positions of said support device comprising a first position and a second position of said support device;

with each coil device in said plurality of coil devices, associating a coil position of that coil device for each of the plurality of positions of said support device, by associating a first of said coil groups with said first position and a second of said coil groups with said second position, thereby giving said first of said coil groups a first detection region and said second of said coil groups a second detection region, with at least a portion of said first detection region overlapping at least a portion of said second detection region;

automatically detecting, for each coil device in said plurality of coil devices, a coil position of that coil device for each of the plurality of positions of said support device;

automatically electronically determining a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices and automatically electronically identifying a selected one of said coil groups from among said plurality of coil groups that is comprised of a coil device or coil devices at detected positions for respective positions of said support device that makes said one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups; and

activating said one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

19. A method as claimed in claim 18 comprising automatically determining said plurality of coil groups by including said selected coil device therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

20. A magnetic resonance apparatus comprising:

a magnetic resonance scanner having a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to a magnetic resonance data acquisition sequence implemented with the magnetic resonance scanner, and a drive unit that, during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

an input unit that, for each coil device in said plurality of coil devices, allows a user to associate a coil position of that coil device for each of the plurality of positions of said support device; and

a control unit configured to automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in two of said coil groups that are respectively associated with two adjacent regions of said support device, to include at least two of said coil devices respectively in the respective two coil groups, as said selected coil device to be present within that have overlapping fields of view, and to automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of a coil device or coil devices associated with respective positions of said support device that makes said one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups, and to activate said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said selected one of said coil groups in order to avoid data acquisition discontinuities.

21. A magnetic resonance apparatus as claimed in claim 20 wherein said control unit is configured to determine said plurality of coil groups by including said selected coil device therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.

22. A magnetic resonance apparatus comprising:

a magnetic resonance scanner having a plurality of coil devices operable in at least one of a magnetic resonance excitation mode and a magnetic resonance signal reception mode, and a support device configured to support a subject to be exposed to a magnetic resonance data acquisition sequence implemented with the magnetic resonance scanner, and a drive unit that, during execution of said magnetic resonance data acquisition sequence, moves said support device and the subject thereon continuously through a plurality of positions in said magnetic resonance apparatus;

a detection unit that, for each coil device in said plurality of coil devices, detects a coil position of that coil device for each of the plurality of positions of said support device; and

a control unit, supplied with the respective coil positions from said detection unit, said control unit being configured to automatically electronically determine a plurality of coil groups so that each coil group includes a selected coil device from among said plurality of coil devices, and in two of said coil groups that are respectively associated with two adjacent regions of said support device, include at least two of said coil devices that have overlapping fields of view, and to automatically electronically identify a selected one of said coil groups from among said plurality of coil groups that is comprised of coil devices at detected positions associated with respective positions of said support device that makes said selected one of said coil groups suitable for use during said magnetic resonance data acquisition sequence when said support device is at positions respectively associated with the coil devices in said selected one of said coil groups, and to activate said selected one of said coil groups in order to acquire magnetic resonance data from all coil devices in said selected one of said coil groups when said support device is at said positions respectively associated with the coil devices in said one of said coil groups in order to avoid data acquisition discontinuities.

23. A method as claimed in claim 22 comprising automatically determining said plurality of coil groups by including said selected said coil device therein to form a coil configuration selected from the group consisting of a head coil configuration, a chest coil configuration, a neck coil configuration, a leg coil configuration, a spinal column coil configuration, and a whole-body coil configuration.