Patient-specific headset for diagnostic and therapeutic transcranial procedures
Systems, methods and devices are provided for performing diagnostic or therapeutic transcranial procedures using a patient-specific transcranial headset. The patient-specific headset may include a patient-specific frame that is fabricated, according to volumetric image data, to conform to an anatomical curvature of a portion of a patient's head. The patient-specific frame is configured to support a plurality of transducers in pre-selected positions and orientations, which may be spatially registered to the volumetric image data. This spatial registration may be employed to control at least a portion of the transducers to focus energy at a preselected tissue region.
1. A method of fabricating a transcranial headset for diagnostic or therapeutic procedures, the method comprising:
segmenting volumetric image data of a patient's head to obtain surface data characterizing an anatomical curvature of a portion of the patient's head;
employing the surface data to generate a digital model of a patient-specific frame, such that the patient-specific frame conforms to the anatomical curvature of the portion of the patient's head;
modifying the digital model such that the patient-specific frame comprises a plurality of transducer attachment interfaces for receiving and supporting a plurality of transducers in pre-selected positions and orientations relative to the patient's head;
fabricating the patient-specific frame according to the digital model;
securing the plurality of transducers to the transducer attachment interfaces; and
generating transducer registration data characterizing the positions and orientations of the plurality of transducers relative to the volumetric image data.
2. The method according to claim 1 wherein fabricating the patient-specific frame comprises 3D printing the patient-specific frame.
3. The method according to claim 1 wherein fabricating the patient-specific frame comprises fabricating a mold and employing the mold to fabricate the patient-specific frame.
4. The method according to claim 1 wherein at least a portion of the transducers are phased-array ultrasound transducers, and wherein the pre-selected positions and orientations of the transducer attachment interfaces associated with the phased-array ultrasound transducers are selected to reduce grating lobes.
5. The method according to claim 1 wherein the plurality of transducers comprise one or more ultrasound transducers.
6. The method according to claim 1 wherein at least a portion of the plurality of transducers are phased-array transducers.
7. The method according to claim 6 wherein the phased-array transducers form a sparse array.
8. The method according to claim 6 wherein at least a portion of the phased-array transducers are magnetic resonance coils.
9. The method according to claim 1 wherein a first portion of the plurality of transducers are ultrasound transducers, and wherein a second portion of said plurality of transducers are optical transducers, such that the transcranial headset is suitable for performing photoacoustic detection.
10. The method according to claim 1 wherein a first portion of the plurality of transducers are ultrasound transducers, and wherein a second portion of the plurality of transducers are MRI coils, such that the transcranial headset is suitable for performing simultaneous ultrasound and MR imaging or sonications while using MR imaging.
11. The method according to claim 1 wherein a first portion of the plurality of transducers are MRI coils, and wherein a second portion of the plurality of transducers are positron emission detectors (PET), such that the transcranial headset is suitable for performing both MR and PET imaging.
12. The method according to claim 1 wherein a first portion of the plurality of transducers are MRI coils, and wherein a second portion of the plurality of transducers are positron emission detectors (PET), and third portion of the plurality of transducers are ultrasound transducer such that the transcranial headset is suitable for performing both MR and PET imaging while delivering ultrasound therapy or imaging.
13. The method according to claim 1 wherein at least a portion of the plurality of transducers are optical fibers operably connected to an optical coherence tomography system.
14. The method according to claim 1 further comprising connecting the plurality of transducers to control and processing hardware, the control and processing hardware being configured to employ the transducer registration data to control at least a portion of the plurality of transducers to focus energy at a pre-selected tissue region.
15. The method according to claim 1 wherein the patient-specific frame comprises a plastic support that conforms to the anatomical curvature of the portion of the patient's head.
16. The method according to claim 1 wherein each transducer attachment interface is configured to receive and support a transducer module comprising a sub-array of transducers.
17. The method according to claim 16 wherein each attachment interface and each transducer module have unique shapes, such that a given transducer module fits uniquely with its respective attachment interface.
18. The method according to claim 16 wherein each sub-array comprises transducer elements for forming a phased array.
19. The method according to claim 1 wherein the transcranial headset further comprises a coupling layer, wherein said coupling layer is provided adjacent to an inner surface of the patient-specific frame such that when the transcranial headset is worn, an outer surface of said coupling layer contacts distal surfaces of said plurality of transducers, and an inner surface of said coupling layer contacts the patient's head, thereby facilitating coupling of energy between the patient-specific frame and the patient's head.
20. The method according to claim 1 wherein the plurality of transducer attachment interfaces are configured such that the transducers are removable.