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Background Ultrasound education has been used as a tool to help improve physical examination skills. However, its utility in increasing accuracy of joint line palpation has yet to be investigated. Objective To evaluate the accuracy of resident palpation and identification of the lateral knee joint line before and after introducing a musculoskeletal ultrasound (MSUS) curriculum. Design Cohort study. Setting A physical medicine and rehabilitation (PM&R) residency program at an academic institution. Participants Seventeen PM&R residents. Interventions Residents underwent a knee‐focused MSUS workshop. Main Outcome Measures Distance from needle placement to joint line confirmed with ultrasound. Results All residents demonstrated improved accuracy in lateral knee joint line palpation after completing a knee‐focused MSUS workshop, with statistically significant (P < .05) improvement in postgraduate year (PGY) 2 (P = .02), PGY‐3 (P = .04), and across all residents (P = .001). Conclusions MSUS education significantly improved lateral knee joint line palpation accuracy in resident physicians.

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The Advanced Geosynchronous Studies Imager (AGSI) system design combines the latest available technologies into an instrument design concept which could deliver the improved performance sought by the National Weather Service at NOAA and meet NASA earth system science goals in a joint program. The instrument could cover the Earth disk eveiy 15 minutes with subsatellite point resolution from 1/2 kilometer in the visible to 2 kilometers in the long wave infrared. Simultaneously, it could provide coverage of a 3000 x 5000 kilometer region in 5 minute intervals and 30 second updates of a 1000 kilometer square region containing a weather system of interest. We found that performance margins could be improved even as we drove the design iterations with emphasis on reducing the mass. Scan speed was chosen by maximizing perfonnance while trading off the acceptable impact on the total system. The resulting 18-channel design could deliver vastly improved performance over the present GOES without great increases in mass or volume, while still paying close attention to control of development costs and impact on the host spacecraft. The design could be adapted to changed requirements or descoped to have lower data rates and fewer channels.

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