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US 10,518,108 B2Granted
Therapy system containing an MRI module and means for determining the position of an RF coil
AssigneeKoninklijke Philips N.V.
InventorsErkki Tapani Vahala, Wycliffe Adell Raduma, Tero Jouko Valtter Virta, Annemaria Johanna Halkola
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Abstract
The present disclosure relates to a therapy system (100) comprising a radiotherapy device (102) configured to deliver and direct a radiotherapy beam along an axis to a predefined target position (117) in an imagine zone (138, 146) within an MR module (106) of the therapy system (100). The predefined target position (117) is matched with a position of an RF coil (140) of the MR module (106).
Claims15
A therapy system comprising:
- a magnetic resonance imaging module comprising a main magnet and a patient carrier configured to move into or out of an examination zone within the main magnet;
- a radiotherapy device configured to deliver and direct a radiotherapy beam along an axis to a predefined target position in the examination zone;
- a RF coil connected to the patient carrier, wherein the RF coil is provided with a plurality of fiducial markers that are configured for emitting magnetic resonance signals;
- a positioning system for positioning the patient carrier;
- a spoiler to suppress magnetic resonance signals emitted from one or more fiducial markers;
- a memory for storing machine executable instructions;
- and
- a processor, wherein execution of the machine executable instructions causes the processor to:
- a. control the positioning system to move the patient carrier;
- b. control the MRI module to acquire MRI data responsive to excitation of magnetic resonance in at least a first set of the plurality of fiducial markers;
- c. reconstruct using the MRI data an image representation of the first set of fiducial markers;
- d. calculate the position of the RF coil using the position of the first set of fiducial markers in the reconstructed image;
- e. control the spoiler to suppress magnetic resonance signals emitted from one or more fiducial markers of the first set of fiducial markers in dependence of the calculated position relative to the predefined target position;
- f. repeating steps a)-e) using a second set of fiducial markers of the plurality of the fiducial markers as the first set of fiducial markers until the calculated position matches the predefined target position, wherein the second set of the fiducial markers comprises at least the first set of fiducial markers.
11 more elements
A medical apparatus comprising:
- a magnetic resonance module comprising a main magnet and a patient carrier configured to move into or out of an examination zone within the main magnet;
- a RF coil connected to the patient carrier, wherein the RF coil is provided with a plurality of fiducial markers that are configured for emitting magnetic resonance signals;
- a positioning system for positioning the patient carrier;
- a spoiler to suppress magnetic resonance signals emitted from one or more fiducial markers;
- a memory for storing machine executable instructions;
- and
- a processors, wherein execution of the machine executable instructions causes the processor to:
- a. control the positioning system to move the patient carrier;
- b. control the MRI module to acquire MRI data responsive to excitation of magnetic resonance in at least a first set of the plurality of fiducial markers;
- c. reconstruct using the MRI data an image representation of the first set of fiducial markers;
- d. calculate the position of the RF coil using the position of the first set of fiducial markers in the reconstructed image;
- e. control the spoiler to suppress magnetic resonance signals emitted from one or more fiducial markers of the first set of fiducial markers based on the calculated position relative to a predefined target position;
- f. repeating steps a)-e) using a second set of fiducial markers of the plurality of the fiducial markers as the first set of fiducial markers until the calculated position matches the predefined target position, wherein the second set of the fiducial markers comprises at least the first set of fiducial markers.
10 more elements
A method of controlling a medical apparatus, the medical apparatus comprising a magnetic resonance imaging module comprising a main magnet and a patient carrier configured to move into or out of an examination zone within the main magnet;
- a RF coil connected to the patient carrier, wherein the RF coil is provided with a plurality of fiducial markers that are configured for emitting magnetic resonance signals;
- a positioning system for positioning the patient carrier;
- and a spoiler:
- the method comprises:
- a. control the positioning system to move the patient carrier;
- b. control the MRI module to acquire MRI data responsive to excitation of magnetic resonance in at least a first set of the plurality of fiducial markers;
- c. reconstruct using the MRI data an image representation of the first set of fiducial markers;
- d. calculate the position of the RF coil using the position of the first set of fiducial markers in the reconstructed image;
- e. control the spoiler to suppress magnetic resonance signals emitted from one or more fiducial markers of the first set of fiducial markers based on the calculated position;
- f. repeating steps a)-e) using a second set of fiducial markers of the plurality of the fiducial markers as the first set of fiducial markers until the calculated position matches a predefined target position, wherein the second set of the fiducial markers comprises at least the first set of fiducial markers.
7 more elements
Dependencies are inferred from the claim text.