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. Author manuscript; available in PMC: 2017 Aug 11.
Published in final edited form as: IEEE Trans Biomed Eng. 2013 Jun 7;60(12):3441–3448. doi: 10.1109/TBME.2013.2266795

Fig. 4.

Fig. 4

Noise weighting effects in QSM on a hemorrhage patient shown in (a) magnitude, local field and (b) reconstructed QSM images in a sagittal section. The zoom-in images in (c) correspond to the dashed boxes in (b). The average image quality scores were 1, 1, 2, 3, 3.5, and 4 for TKD, WKD, TVWA, MGL1, NTVWA, and NMEDI, respectively. Similar to volunteer images, overall streaking artifacts (black arrow heads and black arrows) were reduced in Bayesian methods. Streaking artifacts were seen originating mainly from the hemorrhage (black arrow heads) in TVWA and MGL1. This artifact was reduced in NTVWA and NMEDI.