Chapter

Acoustical Imaging

Volume 19 of the series Acoustical Imaging pp 433-437

Turning off Speckle

  • A. J. HealeyAffiliated withDept. of Medical Physics and Medical Engineering, King’s College School of Medicine and Dentistry Dulwich Hospital
  • , S. LeemanAffiliated withDept. of Medical Physics and Medical Engineering, King’s College School of Medicine and Dentistry Dulwich Hospital
  • , F. ForsbergAffiliated withDept. of Medical Physics and Medical Engineering, King’s College School of Medicine and Dentistry Dulwich Hospital

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Abstract

One consequence of the coherent nature of the transmitted ultrasound pulse, is the well-known speckle artefact, which occurs in virtually all medical ultrasound images and can perceptibly degrade their clinical information content. The phenomenon perceived by the observer as speckle, is the severe reduction of signal envelope by (destructive) interference effects [Seggie and Leeman, 1987]. The successful removal of this artefact is therefore important if the full potential of medical ultrasound imaging is to be realised, and the acceptability of a speckle correction procedure (for medical ultrasound images) will be greatly increased if it can be implemented on a real-time basis.