Methods and apparatus for patient positioning in magnetic resonance imaging
According to some aspects, a magnetic resonance imaging system capable of imaging a patient is provided. The magnetic resonance imaging system comprising at least one B0 magnet to produce a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system and a member configured to engage with a releasable securing mechanism of a radio frequency coil apparatus, the member attached to the magnetic resonance imaging system at a location so that, when the member is engaged with the releasable securing mechanism of the radio frequency coil apparatus, the radio frequency coil apparatus is secured to the magnetic resonance imaging system substantially within an imaging region of the magnetic resonance imaging system.
1. A patient handling apparatus configured to facilitate positioning a patient within a magnetic resonance imaging device, the patient handling apparatus comprising:
a patient support having a surface adapted to be positioned between the patient and a bed so that, when positioned, the surface of the patient support is underneath at least a portion of the patient's body; and
a securing portion comprising:
at least one first releasable securing mechanism configured to engage with a radio frequency component to secure the radio frequency component to the securing portion; and
at least one second releasable securing mechanism configured to engage with the magnetic resonance imaging device to secure the securing portion to the magnetic resonance imaging device.
2. The patient handling apparatus of claim 1 , further comprising a bridge component configured to bridge at least some space between the bed and the magnetic resonance imaging device.
3. The patient handling apparatus of claim 2 , wherein the bridge component provides support for at least a portion of the patient support when the patient is positioned within the magnetic resonance imaging device.
4. The patient handling apparatus of claim 2 , wherein the bridge component is mountable to the bed.
5. The patient handling apparatus of claim 2 , wherein the bridge component is mountable to the magnetic resonance imaging device.
6. The patient handling apparatus of claim 2 , wherein the bridge component comprises a plastic surface to bridge at least some of the space between the bed and the magnetic resonance imaging device.
7. The patient handling apparatus of claim 1 , wherein the patient support is configured to be folded.
8. The patient handling apparatus of claim 7 , wherein the patient support is configured to be folded along a living hinge.
9. The patient handling apparatus of claim 7 , wherein the patient support is configured to be folded along a piano hinge.
10. The patient handling apparatus of claim 1 , wherein the at least one first releasable securing mechanism comprises:
a slot; and
a retention mechanism configured to resist movement of a portion of the radio frequency component when the portion is inserted into the slot.
11. The patient handling apparatus of claim 10 , wherein the slot comprises a keyhole slot comprising:
a first portion sized to allow the portion of the radio frequency component to be inserted into the keyhole slot in a first direction along a first axis and to allow the portion of the radio frequency component to be removed from the keyhole slot in a second direction opposite the first direction along the first axis; and
a second portion sized to prevent movement of the portion of the radio frequency component at least in the second direction along the first axis.
12. The patient handling apparatus of claim 11 , wherein the keyhole slot is configured to allow the portion of the radio frequency component to be moved from the first portion of the keyhole slot to the second portion of the keyhole slot in a first direction along a second axis.
13. The patient handling apparatus of claim 12 , wherein the retention mechanism is configured to resist movement of the portion of the radio frequency component at least in a second direction along the second axis when the portion of the radio frequency component is moved into the second portion of the keyhole slot.
14. The patient handling apparatus of claim 13 , wherein the retention mechanism comprises a spring snap that allows the portion of the radio frequency component to be moved from the first portion of the keyhole slot into the second portion of the keyhole slot in the first direction along the second axis and resists movement of the portion of the radio frequency component in the second direction along the second axis when the portion of the radio frequency component has been moved into the second portion of the keyhole slot.
15. The patient handling apparatus of claim 14 , wherein the spring snap comprises a plastic spring.
16. The patient handling apparatus of claim 14 , wherein a height of the spring snap is less than or equal to approximately 0.5 inches.
17. The patient handling apparatus of claim 1 , wherein the height of the spring snap is less than or equal to approximately 0.25 inches.
18. The patient handling apparatus of claim 1 , wherein the at least one second releasable securing mechanism comprises:
a retention mechanism having a lead-in portion that allows the second releasable securing mechanism to engage a member of the magnetic resonance imaging device in a first direction along a first axis and a retention portion that prevents movement of the patient support relative to the magnetic resonance imaging device at least in a second direction along the first axis when the at least one second releasable securing mechanism engages the member of the magnetic resonance imaging system.
19. The patient handling apparatus of claim 18 , wherein the member is attached to the magnetic resonance imaging device at a location such that, when the at least one securing mechanism engages with the member, the radio frequency component is positioned within the imaging region of the magnetic resonance imaging device.
20. The patient handling apparatus of claim 19 , wherein the at least one second releasable securing mechanism comprises a release mechanism that, when actuated, moves the retention portion to allow the at least one second releasable securing mechanism to disengage from the member of the magnetic resonance imaging system.
21. The patient handling apparatus of claim 20 , wherein the release mechanism comprises at least one spring.
22. The patient handling apparatus of claim 21 , wherein the release mechanism comprises at least one pull portion to allow a user to pull on the release mechanism to compress the at least one spring and move the retention portion.
23. The patient handling apparatus of claim 21 , wherein the at least one spring comprises at least one plastic spring.
24. The patient handling apparatus of claim 21 , wherein a height of the at least one spring is less than or equal to approximately 0.5 inches.
25. The patient handling apparatus of claim 21 , wherein a height of the at least one spring is less than or equal to approximately 0.25 inches.
26. The patient handling apparatus of claim 1 , wherein the patient support comprises molded plastic.
27. The patient handling apparatus of claim 26 , wherein the patient support comprises polyethylene.
28. The patient handling apparatus of claim 26 , wherein the patient support comprises polypropylene.
29. The patient handling apparatus of claim 1 , wherein the patient support facilitates positioning a portion of the patent's anatomy within the magnetic resonance imaging system from a standard medical bed.
30. The patient handling apparatus of claim 1 , wherein the patient support is sized to support a substantial portion of the patient's body.
31. A method, comprising:
releasably securing a support to a magnetic resonance imaging device so as to facilitate magnetic resonance imaging of a patient, the support disposed between the patient and a standard medical bed, wherein the standard medical bed comprises at least some ferromagnetic material.