title: 2D biological representations with reduced speckle obtained from two perpendicular ultrasonic arrays.
abstract: Ultrasound diagnosis is a widely used medical tool. Among the various ultrasound techniques, ultrasonic imaging is particularly relevant. This paper presents an improvement to a two-dimensional (2D) ultrasonic system using measurements taken from perpendicular planes, where digital signal processing techniques are used to combine one-dimensional (1D) A-scans were acquired by individual transducers in arrays located in perpendicular planes. An algorithm used to combine measurements is improved based on the wavelet transform, which includes a denoising step during the 2D representation generation process. The inclusion of this new denoising stage generates higher quality 2D representations with a reduced level of speckling. The paper includes different 2D representations obtained from noisy A-scans and compares the improvements obtained by including the denoising stage.
authors.affiliation: ITACA, Universitat Politècnica de València, Valencia, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Rodriguez-Hernandez
authors.affiliation: ITACA, Universitat Politècnica de València, Valencia, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Gomez-Sacristan
authors.affiliation: ITI, Universitat Politècnica de València, Valencia, Spain.
authors.forename: Víctor M
authors.initials: VM
authors.lastname: Sempere-Payá
mesh_terms: D000465:Algorithms; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging; D014463:Ultrasonography; D058067:Wavelet Analysis
keywords: 2D representation; denoising; perpendicular arrays; ultrasonics; wavelets