Fig. 4. Coronal chest noise-optimized virtual monoenergetic dual-energy CT imaging. Beam-hardening and/or photon starvation artifacts in thoracic inlet.

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Fig. 4. Coronal chest noise-optimized virtual monoenergetic dual-energy CT imaging. Beam-hardening and/or photon starvation artifacts in thoracic inlet and shoulder pronounced in 40 keV image (A) are reduced in 60 keV images (B). Because iodine contrast is progressively reduced at higher keV images, overall optimal image quality can be achieved around 60 keV depending on patients' size as well as body region. Fig. 4. Coronal chest noise-optimized virtual monoenergetic dual-energy CT imaging. Beam-hardening and/or photon starvation artifacts in thoracic inlet and shoulder pronounced in 40 keV image (A) are reduced in 60 keV images (B). Because iodine contrast is progressively reduced at higher keV images, overall optimal image quality can be achieved around 60 keV… Korean J Radiol. 2017 Jul-Aug;18(4):555-569. https://doi.org/10.3348/kjr.2017.18.4.555