Free SKILL.md scraped from GitHub. Clone the repo or copy the file directly into your Claude Code skills directory.
npx versuz@latest install hiyenwong-ai-collection-collection-skills-cmut-transcranial-ultrasound-bbbgit clone https://github.com/hiyenwong/ai_collection.gitcp ai_collection/SKILL.MD ~/.claude/skills/hiyenwong-ai-collection-collection-skills-cmut-transcranial-ultrasound-bbb/SKILL.md--- name: cmut-transcranial-ultrasound-bbb description: "Capacitive Micromachined Ultrasonic Transducer (CMUT)-based transcranial focused ultrasound system for blood-brain barrier opening and drug delivery. Includes phase-inversion transmission, microbubble monitoring, and closed-loop control. Activation: CMUT ultrasound, blood-brain barrier, BBB opening, transcranial focused ultrasound, drug delivery to brain." --- # CMUT Transcranial Ultrasound for Blood-Brain Barrier Opening > Integrated CMUT platform combining therapeutic ultrasound-mediated BBB opening with real-time microbubble activity monitoring for drug delivery to the brain. ## Metadata - **Source**: arXiv:2604.22666v1 - **Authors**: Research team (CMUT-based transcranial focused ultrasound) - **Published**: 2026-04-24 - **Category**: Neuroscience, Medical Imaging, Drug Delivery ## Core Methodology ### Key Innovation Development of a capacitive micromachined ultrasonic transducer (CMUT)-based transcranial focused ultrasound system that integrates both therapeutic BBB opening and real-time microbubble activity sensing within a single platform. ### Technical Framework #### 1. Hardware Architecture - **Geometrically focused half-ring array**: Five transmitters + one receiving element - **Broadband operation**: Capable of therapy delivery and microbubble monitoring across wide frequency range - **Phase-inversion (PI) transmission**: Suppresses CMUT-generated harmonics #### 2. Microbubble Detection - **Broadband emission capture**: Time-resolved acoustic spectra - **Phase-inversion processing**: 7-20dB enhancement in effective dynamic range - **Kinetic tracking**: Microbubble arrival and decay monitoring #### 3. Validation Workflow 1. **Simulations and in-vitro**: Acoustic measurements with microbubbles 2. **In-vivo (rats)**: Spatially localized BBB opening 3. **MRI confirmation**: T1-weighted and dynamic contrast-enhanced (Ktrans) imaging 4. **Acoustic monitoring**: Real-time microbubble activity tracking ## Implementation Guide ### Prerequisites - CMUT array fabrication capability - Ultrasound imaging equipment - Microbubble contrast agents - MRI access for validation - Signal processing hardware ### Step-by-Step #### 1. Array Design ``` Configuration: Half-ring focused array - Transmitters: 5 elements - Receiver: 1 central element - Focus: Geometric focusing for spatial localization ``` #### 2. Phase-Inversion Transmission ``` Process: 1. Transmit pulse with phase φ 2. Transmit pulse with phase φ + π 3. Sum received signals 4. Result: Harmonic suppression + broadband microbubble enhancement ``` #### 3. Microbubble Monitoring - Capture broadband acoustic emissions - Apply PI processing for signal enhancement - Track arrival/decay kinetics - Correlate with BBB permeability (Ktrans) #### 4. Closed-Loop Control Foundation - Real-time frequency-agile operation - Continuous microbubble feedback - Adaptive pressure control ## Applications - Targeted drug delivery to the brain - Real-time BBB permeability monitoring - Closed-loop ultrasound-mediated therapy - Preclinical small animal research ## Pitfalls - Requires specialized CMUT fabrication - Needs MRI for validation - Spatial resolution limited by ultrasound wavelength - Safety thresholds must be carefully maintained ## Related Skills - neurodegenerative-4d-diffusion-v3 - brain-dit-fmri-foundation-model-v6 - eeg-structure-guided-diffusion-v3 ## References - arXiv:2604.22666v1 - CMUT-Based Transcranial Focused Ultrasound Platform