Quantitative Transmission Ultrasound (QTUS) is a tomographic transmission ultrasound modality that is capable of generating\n3D speed-of-sound maps of objects in the field of view. It performs this measurement by propagating a plane wave through the\nmedium from a transmitter on one side of a water tank to a high resolution receiver on the opposite side. This information is then\nused via inverse scattering to compute a speed map. In addition, the presence of reflection transducers allows the creation of a\nhigh resolution, spatially compounded reflection map that is natively coregistered to the speed map. A prototype QTUS system was\nevaluated for measurement and geometric accuracy as well as for the ability to correctly determine speed of sound.
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