Single Line Of Sight Research Articles

Color digital echo/doppler image presentation

Arterial occlusive disease in peripheral blood vessels can be evaluated with an ultrasound scanning system designed to generate real-time cross sectional tissue images and to assess the character of blood flow at any point using multi-gate Doppler methods. A new-generation echo/Doppler system. Duplex scanner IV, incorporates digital display technology to store both echo target location and flow velocity parameters for color composite imaging. Many display formats are possible. In B-mode format echographic tissue images are supplemented with flow information acquired at a specific point in time over 20–30 cardiac cycles by a slow spatial sweep of the Doppler beam in the region of interest. Image storage also makes possible a novel M/Q-mode presentation wherein anatomical interfaces and flow velocities are detected along a single line of sight and displayed as a function of time.

Versatile x-ray spectrometer in the range 5–200 keV

A spectrometer is described which provides time resolution down to a few nanoseconds and broad-band energy resolution in the range 5–200 keV along a single line of sight. The spectrometer consists of five channels arranged so that the x rays which are not absorbed in one plastic scintillator pass on to the next channel, but the scintillator emission is deflected onto a photomultiplier.