PubMed · 13473774
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
S H INGBAR, N FREINKEL. 1957. Surfacebinding of thyroxine by thyroidal proteins.. https://doi.org/10.1210/endo-61-4-398
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Explore the source record for details and available documents.
A removable ultrasonic collimator is described. It could be easily attached to a general purpose transducer to improve resolution on ultrasound study of superficial small organs. The collimator is made of a small central focusing lens, 6 mm in diameter, surrounded by air. The air insulates the peripheral portion of the transducer surface. ONLY THE CENTRAL ULTRASONIC BEAM WOULD BE TRANSMITTED THROUGH THE LENS. As a result, the ultrasonic beam is narrowed and the resolution is improved. Draw-back of the collimator is a reduction in the ultrasound intensity. However, it can be compensated for by increasing either the transducer output or system gain.
Explore the source record for details and available documents.