MR imaging system with interactive image contrast control over a network

• US 6,362,620 B1
• Filed: 12/27/1999
• Issued: 03/26/2002
• Est. Priority Date: 11/25/1998
• Status: Expired due to Fees

• Current Assignee: GE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
• Original Assignee: GE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
• Inventors: Francis, Roshy J., Debbins, Josef P., Ploetz, Lawrence E., Prorok, Richard J.
• Primary Examiner(s): ARANA, LOUIS M
• Application Number:
  US09/473,218
• Time in Patent Office: 820 Days
• Field of Search: 324/307, 324/309, 324/300, 324/312, 324/306, 324/314, 324/318, 324/322
• US Class Current: 324/309
• CPC Class Codes: G01R 33/28 Details of apparatus provided for in groups G01R33/44 - G01R33/64
• CPC Class Codes: G01R 33/54 Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console

Abstract

An interactive magnetic resonance (MR) imaging system includes a MR imaging device, a network coupling the MR imaging device and a remote facility, an operator interface coupled to the MR imaging device and the network, a memory coupled to the MR imaging device, and a sequence controller coupled to the memory. The MR imaging device is configured to acquire and reconstruct MR data in real-time of a current imaging section and display a MR image in real-time of the current imaging section. The network provides remote services to the MR imaging device. The operator interface permits an operator to select from a plurality of image contrast mechanisms. The memory stores a plurality of image contrast waveform segments and at least one imaging waveform segment. Each of the plurality of image contrast waveform segments and the at least one imaging waveform segment is distinctly addressable such that each waveform segment can be independently accessed from the memory. The sequence controller dynamically links the selected image contrast waveform segments and one imaging waveform segment, causing the MR imaging device to acquire a new image with the selected waveform segment mechanisms.

Claims

1. An interactive magnetic resonance (MR) imaging system, comprising:

a MR imaging device configured to acquire and reconstruct MR data in real-time of a current imaging section and displaying a MR image in real-time of the current imaging section;

a network coupling the MR imaging device and a remote facility, the network providing remote services to the MR imaging device;

an operator interface coupled to the MR imaging device and the network to permit an operator to select from a plurality of image contrast mechanisms;

a memory coupled to the MR imaging device to store a plurality of image contrast waveform segments and at least one imaging waveform segment, wherein each of the plurality of image contrast waveform segments and the at least one imaging waveform segment is distinctly addressable such that each waveform segment can be independently accessed from the memory; and

a sequence controller coupled to the memory to dynamically link the selected image contrast waveform segments and one imaging waveform segment, causing the MR imaging device to acquire a new image with the selected waveform segment mechanisms.

2. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise calibration of the MR imaging device.

3. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise upgrades in software used to operate the MR imaging device.

4. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise service diagnosis for maintenance and repair of the MR imaging device.

5. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise remote control of image parameters and mechanisms of the MR imaging device.

6. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise management of contractual subscriptions between the MR imaging device and the remote facility.

7. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise remote storage of MR data and images from the MR imaging device.

8. The interactive magnetic resonance (MR) imaging system of claim 1, wherein the remote services comprise remote access to MR data and images from the MR imaging device.

9. The interactive MR imaging system of claim 1, wherein the operator interface includes a plurality of icons on a display screen for displaying the available image contrast mechanisms.

10. The interactive MR imaging system of claim 1, wherein the memory stores a flow compensation imaging waveform segment.

11. The interactive MR imaging system of claim 1, wherein the plurality of image contrast waveform segments stored in the memory includes a spatial saturation waveform segment, a chemical saturation waveform segment, and an inversion recovery waveform segment.

12. A method for interactively and remotely controlling the image contrast of a real-time magnetic resonance (MR) image produced in a MR system, comprising:

a) establishing a communication connection over a network between the MR system and a remote facility;

b) storing a plurality of image contrast waveform segments in a waveform memory of the MR system;

c) storing at least one imaging waveform segment in the waveform memory of the MR system;

d) selecting from the plurality of image contrast waveform segments stored in the waveform memory;

e) selecting from the at least one imaging waveform segment stored in the waveform memory;

f) constructing a MR imaging pulse sequence in real-time by a sequence controller dynamically linking the selected image contrast waveform segment to the selected imaging waveform Segment stored in the waveform memory at run-time;

g) acquiring MR data using the dynamically linked MR imaging pulse sequence in real-time;

h) reconstructing the MR data acquired in real-time; and

i) displaying the newly acquired MR image as the current image.

13. The method of claim 12, wherein storing a plurality of image contrast waveform segments includes storing waveform segments from a group including an inversion recovery waveform segment, a chemical saturation waveform segment, and a spatial saturation waveform segment.

14. The method of claim 12, wherein storing at least one imaging waveform segment includes storing a flow compensation waveform segment.

15. The method of claim 12, further comprising repeating steps (f) to (i) a plurality of repetitions with appropriate modifications to the MR imaging pulse sequence at each repetition to acquire enough MR data in accordance with the resolution of the proposed MR image to be displayed.

16. The method of claim 12, wherein selecting from the plurality of image contrast waveform segments and selecting from at least one imaging waveform segment is a default base imaging waveform segment stored in the waveform memory when no explicit selection is made.

17. The method of claim 12, wherein selecting from the plurality of image contrast waveform segments stored in the waveform memory includes selecting more than one image contrast waveform segments.

18. The method of claim 12, wherein constructing a MR imaging pulse sequence includes the sequence controller sequentially accessing the selected plurality of contrast waveform segments in the waveform memory then the selected imaging waveform segment in the waveform memory.

19. The method of claim 18, wherein constructing a MR imaging pulse sequence further includes dynamically linking the selected imaging waveform segment to the end of the plurality of image contrast waveform segments selected.

20. The method of claim 12, further comprising the step of halting the current acquisition of MR data, the acquisition commencing with at least one current waveform segment, which is in progress at the time when a selection of at least one waveform segment is made on the MR system and halting the displaying of the current MR image resulting therefrom, such that steps (f) to (i) for the selected at least one waveform segment can commence.

21. The method of claim 20, further comprising instantaneously replacing the at least one current waveform segment with the selected at least one waveform segment prior to step (f).

22. The method of claim 12, further comprising completing the acquisition of MR data, the acquisition commencing with at least one current waveform segment, which is in progress at the time when a selection of at least one waveform segment is made in the MR system and further completing the displaying of the MR image resulting therefrom, then commencing steps (f) to (i) with the selected at least one waveform segment.

23. The method of claim 22, further comprising instantaneously replacing the at least one current waveform segment with the selected at least one waveform segment prior to step (f).

24. The method of claim 12, further comprising the step of instantaneously replacing at least one current waveform segment of the current MR data acquisition in progress with an at least one new waveform segment, wherein the at least one new waveform segment is selected while the current MR data acquisition is in progress, and completing the current MR data acquisition in progress with the at least one new waveform segment such that the resulting MR image is a hybrid image of the at least one current waveform segment and the at least one new waveform segment scan.

25. The method of claim 12, further comprising modifying the MR imaging pulse sequence from a modification step selected from a group including modifying an individual gradient amplitude comprising the MR image pulse sequence, modifying a radio frequency (RF) amplitude comprising the MR image pulse sequence, modifying a pulse width comprising the MR image pulse sequence, and modifying a relative timing within the MR imaging pulse sequence.

26. An interactive magnetic resonance (MR) imaging system, comprising:

a) means for establishing a communication connection over a network between the MR system and a remote facility;

b) means for storing a plurality of image contrast waveform segments in a waveform memory of the MR system;

c) means for storing at least one imaging waveform segment in the waveform memory of the MR system;

d) means for selecting from the plurality of image contrast waveform segments stored in the waveform memory;

e) means for selecting from the at least one imaging waveform segment stored in the waveform memory;

f) means for constructing a MR imaging pulse sequence in real-time by a sequence controller dynamically linking the selected image contrast waveform segment to the selected imaging waveform segment stored in the waveform memory at run-time;

g) means for acquiring MR data using the dynamically linked MR imaging pulse sequence in real-time;

h) means for reconstructing the MR data acquired in real-time; and

i) means for displaying the newly acquired MR image as the current image.

27. The system of claim 26, wherein means for storing a plurality of image contrast waveform segments includes waveform segments from a group including an inversion recovery waveform segment, a chemical saturation waveform segment, and a spatial saturation waveform segment.

28. The system of claim 26, wherein means for storing at least one imaging waveform segment includes a flow compensation waveform segment.