Ultrasonics,Debunking supernatural hoaxes for a living, journalist Joe Oakes finds his beliefs coming into question on a visit to a remote Scottish island, where a secretive religious community lives apart from a violent band of isolationists who harbor a murderous strange creature. |
Contents
PulseEcho Methods | 58 |
Doppler Ultrasound | 95 |
Other Ultrasonic Imaging Systems | 130 |
Copyright | |
4 other sections not shown
Common terms and phrases
absorption acoustic acoustic impedance aortic array attenuation axial B-scan backscattered blood velocity/time waveform blood vessel calibration carotid cavitation cell characteristic impedance clinical crown-rump length delay line density described detection diagnostic diameter diffraction digitisation direction display distribution Doppler Doppler-shift Doppler-shift frequency Doppler-shift signal dynamic range echo amplitude energy equation flow foetal heart hydrophone illustrated in figure incident intensity investigation kidney liquid liver maximum measured medium method mitral valve molecules normal occlusion output patient phase piezoelectric position posterior tibial artery probe produced Professor K J W Taylor propagation pulse pulse-echo recorder relaxation process rotation scan converter scanner scattering shear shown in figure spectrum storage stress wave structure supra-orbital artery swept gain systolic systolic pressure target thermocouple time-position scan timebase tissue transducer transient recorder transmitted tube two-dimensional typical ultrasonic ultrasonic beam ultrasonic field ultrasonic wave ultrasound velocity visualisation voltage waveform wavelength Woodcock zero-crossing