1. (canceled)
2. (canceled)
3. (canceled)
4. (canceled)
5. (canceled)
6. (canceled)
7. (canceled)
8. (canceled)
9. (canceled)
10. (canceled)
11. (canceled)
12. (canceled)
13. A hand-held percussive shaker instrument comprising:
a first enclosure, the first enclosure comprising a first sound producing material;
a second enclosure, the second enclosure comprising a second sound producing material;
a center assembly, the center assembly fixedly connected to the first enclosure and the second enclosure;
the center assembly comprises a first member, the first member comprises a first tab; a second member, the second member comprises a second tab; a screw, the screw fixedly connecting the first member to the second member;
the first enclosure comprises a first hole and a second hole, the first tab engaged with the first hole, the second tab engaged with the second hole; and
a lock assembly, the lock assembly integrally formed in the center assembly.
14. The instrument of claim 13 wherein the first sound producing material and the second sound producing material produce a different tone.
15. The instrument of claim 14 wherein the first sound producing materials and the second sound producing material produce a same tone.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for operating a magnetic resonance apparatus comprising the steps of:
generating a steady-state pulse sequence; and
in said steady-state pulse sequence, generating an RF pulse acting selectively on a slice of interest of an examination subject and an RF pulse acting non-selectively on said slice of interest in alternation.
2. A method as claimed in claim 1 comprising generating said RF pulse acting selectively on the slice of interest with a flip angle +\u03b1 and generating said RF pulse acting non-selectively on said slice of interest with a flip \u2212\u03b1.
3. A method as claimed in claim 1 comprising, in said steady-state pulse sequence, generating a slice selection gradient simultaneously with said RF pulse selectively acting on the slice of interest.
4. A method as claimed in claim 1 comprising, in said steady-state pulse sequence, after each RF pulse, generating a readout gradient for reading out a steady-state signal.
5. A method as claimed in claim 1 comprising, at a beginning of said steady-state pulse sequence, generating an \u03b12 RF pulse for deflecting a magnetization vector in the slice of interest by an angle having a magnitude \u03b12, for accelerated adoption of an equilibrium state of the magnetization in the slice of interest.
6. A method as claimed in claim 1 comprising, for magnetization preparation at a beginning of said steady-state pulse sequence, generating a non-slice-selective \u03b2 RF pulse for deflecting a magnetization value by an angle \u03b2.
7. A method as claimed in claim 6 comprising generating a spoiler gradient as a part of slice selection gradient in association with said \u03b2 RF pulse.
8. A magnetic resonance apparatus comprising:
an Rf unit for emitting RF pulses for exciting magnetic resonance signals in an examination subject, and for receiving said magnetic resonance signals;
a gradient coil system operated by a gradient amplifier; and
a sequencer unit connected to said RF unit and to said gradient amplifier for operating said RF unit and said gradient amplifier with a steady-state pulse sequence including causing said RF unit to emit an RF pulse acting selectively on a slice of interest of a subject and an RF pulse acting non-selectively on the slice of interest in alternation.
9. A magnetic resonance apparatus as claimed in claim 8 wherein said sequencer unit operates said RF unit for generating said RF pulse acting selectively on the slice of interest with a flip angle of +\u03b1 and for generating said RF pulse acting non-selectively on the slice of interest with a flip angle of \u2212\u03b1.
10. A magnetic resonance apparatus as claimed in claim 8 wherein said sequencer unit operates said gradient amplifier for generating a slice selection gradient simultaneously with the RF pulse acting selectively on the slice of interest.
11. A magnetic resonance apparatus as claimed in claim 8 wherein said sequencer unit operates said gradient amplifier for generating a readout gradient after each of said RF pulses, for reading out a steady-state signal.
12. A magnetic resonance apparatus as claimed in claim 8 wherein said sequencer unit, at a beginning of said steady-state pulse sequence, operates said RF unit for generating an \u03b12 RF pulse, acting non-selectively on said slice of interest, for deflecting a magnetization vector in the slice of interest by an angle having a magnitude \u03b12, for accelerated adoption of an equilibrium state of the magnetization in the slice of interest.
13. A magnetic resonance apparatus as claimed in claim 8 wherein said sequencer unit, for magnetization preparation at a beginning of the steady-state pulse sequence, operates said RF unit for generating a non-slice-selective \u03b2 Rf pulse for deflecting a measurement value by an angle \u03b2.
14. A magnetic resonance apparatus as claimed in claim 13 wherein said sequencer unit operates said gradient amplifier for generating a spoiler gradient as a part of a slice selection gradient in association with said \u03b2 RF pulse.