Ch 14 (Pulsed Echo Instrumentation)

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Across
  1. 7. part of demodulation that converts all negative voltages into positive voltages
  2. 8. maintains and organizes the proper timing and interaction of the system's components (two words)
  3. 10. part of system that determines the amplitude, pulse repetition period, and pulse repetition frequency
  4. 11. transforms the electrical signals from the transducer into a form suitable for display
Down
  1. 1. the receiver corrects for attenuation with this process
  2. 2. part of demodulation that places a smooth line around the "bumps" and evens them out (AKA enveloping)
  3. 3. part of ultrasound system that converts electrical energy into acoustic energy during transmission and acoustic energy into electrical energy during reception
  4. 4. part of ultrasound system that presents the processed data (ex: a flat monitor, a transparency, a spectral plot, etc)
  5. 5. archives the ultrasound studies (ex: a computer hard drive, CD, DVD, etc)
  6. 6. determines the firing delay patterns for phased array systems (two words)
  7. 9. this principle states that when modifications to either output power or receiver gain can improve the image's diagnostic quality, the first and best choice is the one that will minimize the patient's ultrasound exposure