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Hackaday0 Hot0 bình luận5 phút đọc
Hackaday Europe 2026: Is Your Blood Pressure Monitor Lying To You?
Digital blood pressure monitors using the oscillometric method are less accurate than commonly assumed. These $30-50 devices inflate an arm cuff and detect pressure oscillations during deflation, using fixed percentage thresholds (e.g., 40% and 80% of oscillation amplitude) to estimate systolic and diastolic values — an approximation rather than a direct measurement. Category A monitors are only required to land within ±15 mmHg for 85% of readings. To investigate this, Milos Rasic built the Open Cardiography Signal Measuring Device, an open-source platform that combines arm cuff pressure sensing with PPG, ECG, and digital stethoscope inputs to test alternative measurement algorithms and evaluate off-the-shelf monitor accuracy.
Nguồn: https://hackaday.com/2026/07/06/hackaday-europe-2026-is-your-blood-pressure-monitor-lying-to-you. 8sync News chỉ tóm tắt và dẫn link; bản quyền nội dung thuộc tác giả và nguồn gốc.
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MIT News0 Hot5 phút
A portable ultrasound system could make reliable breast imaging more accessible
MIT researchers have developed a portable ultrasound system aimed at making breast cancer screening more accessible and frequent. The new system features a backing layer added to the ultrasound transducer that improves image resolution and reduces noise, plus an adaptive beamforming algorithm that compensates for varying sound speeds across tissue types, yielding up to 10% resolution improvement. A computer-vision-based user interface guides non-expert users to position the probe correctly, enabling consistent longitudinal monitoring. In trials, untrained volunteers successfully located embedded targets at higher rates than with traditional probes. The team plans to develop a smartphone-compatible version and is exploring commercialization, with potential applications beyond breast cancer to ovarian cancer, endometriosis, and fetal monitoring.
