An improved freehand 3D-ultrasound volume reconstruction technique for fast scans with scanline motion correction

Aparna Harindranath; Satvika Bharadwaj; Komal Nikhil Shah; Sanath Kumar Nadiger; Kajoli B. Krishnan; Manish Arora

doi:10.1117/12.2582139

15 February 2021 An improved freehand 3D-ultrasound volume reconstruction technique for fast scans with scanline motion correction

Aparna Harindranath, Satvika Bharadwaj, Komal Nikhil Shah, Sanath Kumar Nadiger, Kajoli B. Krishnan, Manish Arora

Author Affiliations +

Proceedings Volume 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography; 1160213 (2021) https://doi.org/10.1117/12.2582139
Event: SPIE Medical Imaging, 2021, Online Only

Abstract

Freehand 3D-ultrasound imaging using a 2D-ultrasound probe with attached position and orientation(pose) sensor is a cost-effective 3D-imaging modality. The standard method of 3D-reconstruction involves stacking the 2D-image slices in their appropriate position and orientations in the region swept by the probe. A single 2D-image is obtained by sequentially exciting the multiple elements of an array transducer probe. Standard 3D-reconstruction assumes that all the scanlines of a single frame are acquired concurrently. This assumption limits the speed of the scan required with accurate volume reconstruction. For correcting imperfections in reconstructed volume due to fast probe-motion, this paper proposes a new scanline-based 3D-volume reconstruction. This method corrects the placement and orientation of each scanline, such that the 'fast' probe motion does not distort the reconstructed volume. The improved performance of the proposed reconstruction method compared to standard plane-based reconstruction is demonstrated with scans performed with a convex probe on imaging phantoms. An anechoic cylindrical inclusion in a cube-shaped phantom is visualized using both reconstruction methods and visually compared to a reference image. Reference image of inclusion is reconstructed from a slow scan. For quantitative analysis, edge detected inclusions from images of the reconstructed volumes are compared with that of the corresponding reference image. The Dice coefficient of the inclusion with the proposed scanline-based reconstruction with the reference image is on an average 83% higher than that of the standard method.

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Aparna Harindranath, Satvika Bharadwaj, Komal Nikhil Shah, Sanath Kumar Nadiger, Kajoli B. Krishnan, and Manish Arora "An improved freehand 3D-ultrasound volume reconstruction technique for fast scans with scanline motion correction", Proc. SPIE 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography, 1160213 (15 February 2021); https://doi.org/10.1117/12.2582139

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