Optimizing diffusion-weighted magnetic resonance imaging for evaluation of lung tumors: A comparison of respiratory triggered and free breathing techniques

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Optimizing diffusion-weighted magnetic resonance imaging for evaluation of lung tumors: A comparison of respiratory triggered and free breathing techniques Signe Swerkersson, Oscar Grundberg, Karl Kölbeck, Andreas Carlberg, Sven Nyrén, Mikael Skorpil European Journal of Radiology Open Volume 5, Pages 189-193 (January 2018) DOI: 10.1016/j.ejro.2018.10.003 Copyright © 2018 The Authors Terms and Conditions

Fig. 1 Respiratory-triggered (A, B) and free breathing (C, D) axial diffusion weighted images (b = 750 s/mm2) of a tumor in the right lung without and with a region of interest. The respiratory-triggered acquisition time was approximately 9 min and the free breathing acquisition time was 2:26 min. European Journal of Radiology Open 2018 5, 189-193DOI: (10.1016/j.ejro.2018.10.003) Copyright © 2018 The Authors Terms and Conditions

Fig. 2 Bland-Altman plots show reproducibility of ADC measurement for Reader 1 (A, C) and Reader 2 (B, D) with repeated free-breathing (A, B) and respiratory-triggered (C, D) imaging. X-axes show means of ADCs measured on the first and second acquisition, and y-axes show differences between ADCs on each set as a percentage of their mean. Dashed lines = 95% limits of agreement. European Journal of Radiology Open 2018 5, 189-193DOI: (10.1016/j.ejro.2018.10.003) Copyright © 2018 The Authors Terms and Conditions