Ultra high-resolution computed tomography with 1024-matrix: comparison with 512-matrix for the evaluation of pulmonary nodules
European Journal of Radiology May 02, 2020
Tsubamoto M, Hata A, Yanagawa M, et al. - This study was attempted to ascertain if a 1024-matrix serves superior image quality for the evaluation of pulmonary nodules. Between December 2017 and April 2018, a prospective evaluation was performed, during which CT images exhibiting lung nodules of more than 6 mm and less than 30 mmm were reconstructed with 2 different protocols: 0.5-mm thickness, 512 × 512 matrix, 34.5- cm field of view (FOV) (0.5-512 protocol); and 2-mm thickness, 1024 × 1024 matrix, 34.5-cm FOV (2-1024 protocol ). Researchers examined lung nodule characteristics such as margin, lobulation, pleural indentation, spiculation as well as peripheral vessels and bronchioles visibility and overall image quality by three chest radiologists, applying a 5-point scale. They assessed image noise by assessing the standard deviation in the region of interest for each image. This study enrolled a sum of 89 nodules. The usage of a 2-1024 protocol does not increase the amount of images and permits better evaluation of pulmonary nodules, despite noise increase.
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