# Key Points from IRC Discussions

• Researchers explored advanced imaging technologies, including plenoptic lens arrays for angular resolution, perovskite laser diodes that can be made with simple lab equipment, and ultrasonic phased arrays capable of frequencies up to 20 MHz using LCDs as spatial light modulators.

• The group discussed medical applications of ultrasound, noting that cells show transient membrane contraction (21-45% volumetric reduction) when exposed to ultrasound, with recovery rates of 0.4-0.9% per minute, and that ultrasound can temporarily modulate brain activity in the human cortex.

• Participants critiqued the high cost barriers of medical ultrasound technology, pointing out that devices like GE's Vscan retail for $7,900 despite using relatively inexpensive components, while regulatory barriers from the FDA prevent widespread consumer access.

• The conversation addressed whole brain emulation and mind uploading technologies, referencing the 2008 Whole Brain Emulation roadmap, though noting it's showing its age with limited follow-up work beyond 3scan's continued efforts.

• Researchers discussed advanced medical imaging comparisons between CT, MRI, and PET scans, including novel approaches like MRI reporter genes (e.g., MagA from magnetotactic bacteria) that can create magnetic nanoparticles in cells for imaging.

• The group explored radio astronomy challenges, particularly data processing for modern telescope arrays like LOFAR and the upcoming Square Kilometre Array (SKA) that generate petabytes of data, often processed using MapReduce frameworks.