A study finds that high and low frequency ultrasound can affect the aggregation of red blood cells. High and low frequencies promote aggregation and dispersion, respectively. Blood viscocity is changed as a result. Dispersal of erythrocytes promotes oxygen exchange. This may have therapeutic value for cardiovascular disease, diabetes, cancer, and Alzheimer's disease.

Summary: https://medicalxpress.com/news/2026-05-frequency-ultrasound-blood-cardiovascular-neurological.html

Original paper: https://www.mdpi.com/1424-8220/26/8/2428

#Science #Ultrasound #Oxygenation #BloodFlow

RE: https://fediscience.org/@PLOSBiology/116573676440143133

🧠Another Interesting study using functional #ultrasound #imaging ( #fUSI) in behaving #ferrets: Boucher, Shamma & Boubenec show that #PremotorCortex activity during #auditory decisions reflects the animal’s internal perceptual category more than the overt motor response itself.

🧵1/2

DIY open-source ultrasound hardware on the rp2040/rp2350

pic0rick은 RP2040 또는 RP2350 마이크로컨트롤러를 사용해 FPGA 없이 초음파 신호 획득을 구현한 오픈소스 하드웨어 보드입니다. 60Msps 10비트 ADC와 SPI 제어 TGC 증폭기를 탑재해 기존 FPGA 기반 설계와 유사한 성능을 저비용·저복잡도로 제공합니다. RP2040의 PIO를 활용해 정밀한 타이밍 제어를 C/C++ 환경에서 가능하게 하여 FPGA 툴체인 없이도 커스터마이징이 용이합니다. 확장용 PMOD 커넥터를 통해 VGA 출력, 멀티플렉서, PSRAM 등 다양한 기능 추가가 가능합니다. 교육, 프로토타이핑, FPGA 지식 없이 초음파 하드웨어 개발을 원하는 개발자에게 적합합니다.

http://un0rick.cc/pic0rick

#opensource #ultrasound #rp2040 #hardware #embedded

🥱🧠 Researchers at #Durham University analyzed #ultrasound #videos to track how often fetuses yawn during different stages of #pregnancy.

The findings indicate that yawning frequency decreases as the #fetus grows, suggesting the behavior is a necessary part of maturation for the central nervous system. Unlike adults, fetuses don't yawn because they're tired or because they see others doing it.

👉 https://www.sciencenews.org/article/yawning-contagious-in-womb-fetus-muscle

#biology #health #science #brain #research #medicine #education

High-frequency ultrasound (3-20 MHz) induces acoutic resonance in viruses with a spherical lipid envelope, rupturing the virus without affecting surrounding cells. This works on influenza A and COVID-19 viruses.

Summary: https://phys.org/news/2026-05-ultrasound-rupture-covid-flu-viruses.html

Original paper: https://www.nature.com/articles/s41598-026-37584-x

#Science #Virology #Flu #COVID19 #Ultrasound

Meanwhile, science progresses. 🙂

#research #virus #ultrasound #medicine

https://agencia.fapesp.br/scientists-use-ultrasound-to-destroy-influenza-a-and-covid-19-viruses-without-damaging-human-cells/57968

SoundOff: Low-Cost Passive Ultrasound Tags

https://yibo-fu.com/SoundOff-Low-cost-Passive-Ultrasound-Tags-for-Non-invasive-and-Non

#HackerNews #Tech #Ultrasound