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. Author manuscript; available in PMC: 2014 May 5.
Published in final edited form as: J Nucl Med. 2014 Jan 16;55(2):329–336. doi: 10.2967/jnumed.113.125989

TABLE 4.

Reconstructed μ Values in Lungs and Soft Tissue for Attenuation Maps for All Patients

Modality μ Value (mm−1)
Lungs
Soft tissue
Mean SD Mean SD
CT 0.0018 0.00052 0.0098 0.00023
Transmission, unscaled 0.0036 0.00051 0.0083 0.00043
Transmission, scaled 0.0019 0.00044 0.0098 0.00024
MR 0.0022 0.0096

Predefined μ values assigned in MR-based method are also shown.