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Crystal Vue technique for imaging fetal spine and ribs

A. Dall'Asta, G. Paramasivam, C. C. Lees | March 2016 | Ultrasound in Obstetrics & Gynecology

Abstract



New ways of assessing the fetus are now possible owing to the introduction of three-dimensional (3D) ultrasound over a decade ago1. 3D ultrasound has been used as an easy-to-perform and accurate technique to image the fetal skeleton1–6. Garjian et al. demonstrated that 3D ultrasound can provide more information than does conventional two-dimensional (2D) imaging in the diagnosis of skeletal abnormalities, both in multiplanar and volume-rendered methods. This is particularly true when assessing short ribs and chest hypoplasias as the entire body region can be visualized and offline volume reconstruction can be performed3. Classical 2D ultrasound examination of long bones, ribs and vertebrae frequently gives insufficiently detailed images for assessment of bone contour, thickness and mineralization. Crystal Vue is a new technique based on image-contrast enhancement that can be used for processing and rendering of acquired 3D volumes. Our recent experience with Crystal Vue, specifically when imaging the bone/soft tissue interface, has led us to believe that it may offer new opportunities for prenatal imaging, particularly of the skeletal system but also of the face and brain. Here we present and compare images of the spine and ribs in a third-trimester normal fetus and those in a fetus with suspected skeletal dysplasia, examined using a Samsung WS80 Elite system (Samsung Medison Co. Ltd., Seoul, South Korea) with Crystal Vue and Realistic Vue software applications.

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