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. Author manuscript; available in PMC: 2009 Apr 10.
Published in final edited form as: Lasers Surg Med. 2008 Oct;40(8):535–542. doi: 10.1002/lsm.20670

Fig. 1.

Fig. 1

a: T1-weighted MR images of a PDT-treated rat along with four calibration tubes with Gd concentrations of 0, 0.5, 1, and 2 mg/ml. b: Normalized signal intensity as a function of Gd concentration.