GPU-based 3D SAFT reconstruction including attenuation correction

E. Kretzek; T. Hopp; N. V. Ruiter

doi:10.1117/12.2081367

17 March 2015 GPU-based 3D SAFT reconstruction including attenuation correction

E. Kretzek, T. Hopp, N. V. Ruiter

Proceedings Volume 9419, Medical Imaging 2015: Ultrasonic Imaging and Tomography; 94190E (2015) https://doi.org/10.1117/12.2081367
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

3D Ultrasound Computer Tomography (3D USCT) promises reproducible high-resolution images for early detection of breast tumors. The KIT prototype provides three different modalities: reflectivity, speed of sound, and attenuation. The reflectivity images are reconstructed using a Synthetic Aperture Focusing Technique (SAFT) algorithm. For high-resolution re ectivity images, with spatially homogeneous reflectivity, attenuation correction is necessary. In this paper we present a GPU accelerated attenuation correction for 3D USCT and evaluate the method by means of image quality metrics; i.e. absolute error, contrast and spatially homogeneous reflectivity. A threshold for attenuation correction was introduced to preserve a high contrast. Simulated and in-vivo data were used for analysis of the image quality. Attenuation correction increases the image quality by improving spatially homogeneous reflectivity by 25 %. This leads to a factor 2.8 higher contrast for in-vivo data.

Citation Download Citation

E. Kretzek, T. Hopp, and N. V. Ruiter "GPU-based 3D SAFT reconstruction including attenuation correction", Proc. SPIE 9419, Medical Imaging 2015: Ultrasonic Imaging and Tomography, 94190E (17 March 2015); https://doi.org/10.1117/12.2081367

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