Multimodal Evaluation of 2-D and 3-D Ultrasound, Computed Tomography and Magnetic Resonance Imaging in Measurements of the Thyroid Volume Using Universally Applicable Cross-Sectional Imaging Software: A Phantom Study

A precise estimate of thyroid volume is necessary for making adequate therapeutic decisions and planning, as well as for monitoring therapy response. The goal of this study was to compare the precision of different volumetry methods. Thyroid-shaped phantoms were subjected to volumetry via 2-D and 3-D ultrasonography (US), computed tomography (CT) and magnetic resonance imaging (MRI). The 3-D US scans were performed using sensor navigation and...