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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Magn Reson Med. 2017 Oct 11;79(5):2766–2772. doi: 10.1002/mrm.26924

FIGURE 1. Bloch-McConnell and Lorentzian line shape fitting methods for acidoCEST MRI.

FIGURE 1

a) The anatomical image shows the location of the lung tumor. The red box indicates the regions shown in panels b and c. Parametric maps of tissue pHe from acidoCEST MRI fit with b) the Bloch-McConnell equations modified to include pH as a fitting parameter, and c) Lorentzian line shape fitting show that Bloch fitting estimated pHe values primarily in tissue regions, while Lorentzian fitting estimated pHe values primarily in air regions.