Header menu link for other important links
X
Spatial Compounding Technique to Obtain Rotation Elastogram: A Feasibility Study
Published in Elsevier USA
2017
PMID: 28433440
Volume: 43
   
Issue: 6
Pages: 1290 - 1301
Abstract
The perception of stiffness and slipperiness of a breast mass on palpation is used by physicians to assess the level of suspicion of a lesion as being malignant or benign. However, most current ultrasound elastography imaging methods provide only stiffness-related information. There is no existing approach that provides information about the local rigid body rotation undergone by only a loosely bonded, asymmetrically oriented lesion subjected to a small quasi-static compression. The inherent poor lateral resolution in ultrasound imaging poses a limitation in estimating the local rigid body rotation. Several techniques have been reported in the literature to improve the lateral resolution in ultrasound imaging, and among them is spatial compounding. In this study, we explore the feasibility of obtaining better-quality rotation elastograms with spatial compounding through simulations using Field II and experiments on tissue-mimicking phantoms. The phantom was subjected to axial compression (∼1%–2%) from the top, and the angular axial and lateral displacement estimates were obtained using a multilevel 2-D displacement tracking algorithm at different insonification angles. A rotation elastogram (RE) was obtained by taking half of the difference between the lateral gradient of the axial displacement estimates and the axial gradient of the lateral displacement estimates. Contrast-to-noise ratio was used to quantify the improvements in quality of RE. Contrast-to-noise ratio values were calculated by varying the maximum steering angle and the incremental angle, and its effects on RE quality were evaluated. Both simulation and experimental results corroborated and indicated a significant improvement in the quality of RE using compounding technique. © 2017 World Federation for Ultrasound in Medicine & Biology
About the journal
JournalData powered by TypesetUltrasound in Medicine and Biology
PublisherData powered by TypesetElsevier USA
ISSN03015629
Open AccessNo
Concepts (52)
  •  related image
    Medical imaging
  •  related image
    Rigid structures
  •  related image
    Shear strain
  •  related image
    Stiffness
  •  related image
    Ultrasonic applications
  •  related image
    Ultrasonic imaging
  •  related image
    Axial displacements
  •  related image
    BREAST LESION
  •  related image
    ELASTOGRAMS
  •  related image
    FIBROADENOMA
  •  related image
    Lateral displacements
  •  related image
    MALIGNANT LESION
  •  related image
    SPATIAL COMPOUNDING
  •  related image
    Rotation
  •  related image
    Article
  •  related image
    Compression
  •  related image
    Computer model
  •  related image
    CONTRAST TO NOISE RATIO
  •  related image
    Controlled study
  •  related image
    ELASTOGRAPHY
  •  related image
    Feasibility study
  •  related image
    Image quality
  •  related image
    IMAGING PHANTOM
  •  related image
    Priority journal
  •  related image
    ROTATION ELASTOGRAM
  •  related image
    ULTRASOUND SCANNER
  •  related image
    Algorithm
  •  related image
    Breast tumor
  •  related image
    Computer assisted diagnosis
  •  related image
    Devices
  •  related image
    Diagnostic imaging
  •  related image
    ELASTOGRAPHY
  •  related image
    Human
  •  related image
    Image enhancement
  •  related image
    PALPATION
  •  related image
    Pathophysiology
  •  related image
    Procedures
  •  related image
    Reproducibility
  •  related image
    Sensitivity and specificity
  •  related image
    Spatiotemporal analysis
  •  related image
    YOUNG MODULUS
  •  related image
    Algorithms
  •  related image
    Breast neoplasms
  •  related image
    Elastic modulus
  •  related image
    ELASTICITY IMAGING TECHNIQUES
  •  related image
    Feasibility studies
  •  related image
    Humans
  •  related image
    Image interpretation, computer-assisted
  •  related image
    PALPATION
  •  related image
    PHANTOMS, IMAGING
  •  related image
    Reproducibility of results
  •  related image
    Spatio-temporal analysis