Method for Recovering Lost Ultrasonic Information Using the Echo-intensity Mean

Sara Bahramian, Craig K. Abbey, Michael F. Insana

Research output: Contribution to journalArticlepeer-review


The axial resolution of a B-mode (or intensity) image is limited by the bandwidth of the pulse envelope. In this report, we investigate the source of this limitation by examining the transfer of high-resolution information from the tissue impedance variance throughout the imaging process. For that purpose, we express the mean and variance of the echo-intensity signal as a linear system to track the flow of object information along the image-formation chain. The results reveal how demodulation influences the available information by discarding high spatial-frequency information. This analysis further points to a simple way to recover lost information with only a minor addition to signal processing. Software phantoms are used to show that under ideal conditions, information from small-scale high-contrast reflectors, such as microcalcifications, can be significantly enhanced with this simple change to echo processing.

Original languageEnglish (US)
Pages (from-to)283-299
Number of pages17
JournalUltrasonic Imaging
Issue number5
StatePublished - Sep 1 2018


  • complement intensity image
  • intensity statistics
  • microcalcifications
  • ultrasonic image science
  • ultrasound display

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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