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. 2015 Feb 14;13:49. doi: 10.1186/s12957-014-0424-2

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© Futamura et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Representative PET/CT images showing the NTcratio. (a) True positive case, 57-year-old woman with an SUV-T of 8.69, SUV-LN of 3.11, and a NT ratio of 0.381. (b) True negative case, 63-year-old woman with an SUV-T of 9.63, SUV-LN of 1.07, and a NT ratio of 0.111. (c) False positive case, 42-year-old woman with an SUV-T of 1.27, SUV-LN of 1.69, and a NT ratio of 0.751. (d) False negative case, 62-year-old woman with an SUV-T of 10.88, SUV-LN of 1.45, and a NT ratio of 0.132. The primary tumor (right panel, yellow arrow) and axillary lymph node (left panel, white arrow) showing the highest SUV-LN in the axillae are indicated.