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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 5.

Similarity Data

PET image x PET image y Similarity (%)
TXtr-based AC* CT-based AC 93.01
MRtr-based AC* CT-based AC 90.43
TXtr-based AC* MRtr AC 92.23
Transmission-based AC† MR-based AC 82.86
Transmission-based AC† TXtr AC 78.78
MR-based AC† MRtr AC 87.13
*

Mean normalized percentage similarity between reconstructed PET images for 5 patients when 3 truncated attenuation maps (CT, TXtr, and MRtr) were used.

†

Mean normalized percentage similarity between PET images obtained by transmission- and MR-based attenuation correction and between PET images reconstructed with nontruncated (transmission and MR) and truncated (TXtr and MRtr) attenuation maps.

AC = attenuation correction.

Similarities were measured over all patient data combined.