Enhanced Resolution

Ultrasound B-scan imaging systems operate under some well-known resolution limits. To improve resolution, the concept of stable pulses, having bounded inverse filters, was recently proposed by us for the lateral deconvolution. This framework has been extended to the axial direction, enabling a two-dimensional deconvolution. The modeling of the two-way response in the axial direction is discussed, and the deconvolution is performed in the in-phase quadrature data domain. Stable inverse filters are generated and applied for the deconvolution of the image data from tissue-mimicking phantoms, and in vivo imaging of a carotid artery, where resolution enhancement is observed. The resolution is enhanced by as many as 10 times laterally and 20 times axially, considering the −6 dB width of the auto-correlation of the envelope images.

Journal Articles

  1. Enhanced axial and lateral resolution using stabilized pulses
    S. Chen and K. J. Parker
    J Med Imaging, vol. 4, no. 2 , pp. 027001-1 -027001-11  (2017). View Online
  2. Enhanced resolution pulse-echo imaging with stabilized pulses
    S. Chen and K. J. Parker
    Journal of Medical Imaging, vol. 3, no. 2 , pp. 027003-1 - 027003-13  (2016). View Online
  3. Apodization and windowing eigenfunctions
    K. J. Parker
    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 61, no. 9 , pp. 1575 -1579  (2014). View Online
  4. Superresolution imaging of scatterers in ultrasound B-scan imaging
    K. J. Parker and S. Chen
    Proceedings of Meetings on Acoustics, Vol. 19, no. 1 , pp. 1 -6  (2013). View PDF
  5. Apodization and windowing functions
    K. J. Parker
    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 60, no. 6 , pp. 1263 -1271  (2013). View Online
  6. Superesolution imaging of scatterers in ultrasound B-scan imaging
    K. J. Parker
    J Acoust Soc Am, vol. 131, no. 6 , pp. 4680 -4689  (2012). View Online