We were very excited to share some of the work going on in the O’Brien at the 2024 SPIE Photonics West meeting. Hannah Gruensfelder presented her talk titled “Wearable short-wave infrared photoplethysmography sensor for real-time detection and monitoring of hemodilution” and Francesca Bonetta-Misteli presented her work titled “Monitoring peripheral perfusion during hemodynamic challenges in human subjects with a low-cost wearable device”. Congratulations to you both!