• Minji Kim, Seulgi You, Taeyang Ha, Tae Hee Kim, and Doo Kyoung Kang.
• Department of Radiology, Ajou University School of Medicine, Suwon, Republic of Korea.
• Medicine (Baltimore). 2023 Nov 17; 102 (46): e36106e36106.

AbstractDeciding whether to include or exclude the papillary muscles and trabeculae to blood pool is essential, because quantifications of left ventricular (LV) functional parameters and myocardial mass are significantly affected. As a result, such inclusion or exclusion might produce different indices for diagnosis and therapy. Using cardiac computed tomography (CT), we obtained standard values of the portion of papillary muscle and trabeculae in normal adults, and to find out how the inclusion or exclusion of papillary muscle and trabeculae affect LV functional parameters depending on the patient group. Excluding the papillary muscles from the LV mass results in easier automated contour detection using CT. The percentage portions of papillary muscle and trabeculae to LV end-diastolic volume (EDV) and LV mass (LVM) were 11.9 ± 5.6% and 20.2 ± 4.3%, respectively, significantly affecting disease diagnosis. Imaging should be consistent at follow-up and include or exclude the papillary muscles and trabeculae to avoid introducing significant differences between measurements.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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