3D Ultrasound Volume Reconstruction from Inside-Out Tracking of a 2D Probe
Small, handheld, point-of-care ultrasound devices (POCUS) have been increasingly used in recent years by non-specialists for a wide variety of diagnostic and treatment tasks. Since POCUS devices produce two-dimensional (2D) images, but anatomical structures are three-dimensional, we would often like to construct 3D volumes from a sequence of 2D US scans. We can measure the location of a 2D probe using external cameras, but this is not clinically convenient, so instead we propose to use outward-looking cameras to determine the probe’s location based on objects the camera can see from the probe’s location. We will test the accuracy of this approach in a model of a key clinical application of interest – meas-uring the hip structure of newborn infants suspected of having a congenital abnormality. The partner organization will benefit by gaining insight into how effective “inside-out” tracking might be in a selected clinical application, which might help them determine whether this approach could be used in a variety of other applications.