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Table 2 CR relative percentage difference between no-array and the anterior (A) part of each array for each sphere size. The CR was estimated for both reconstruction methods (MRAC and off-line DCTAC)

From: Evaluation of 511 keV photon attenuation by a novel 32-channel phased array prospectively designed for cardiovascular hybrid PET/MRI imaging

 Sphere size (mm)101317222837
MRACPET/MRI 32ch (%)4.82.85.23.82.1− 1.5
mMR12ch (%)15.12.6− 4.0− 5.42.05.2
MRI 32ch (%)− 20.2− 17.9− 22.7− 16.4− 13.1− 17.3
p value0.0030.010.000.0010.000.00
DCTACPET/MRI 32ch (%)3.80.93.62.03.72.4
mMR12ch (%)6.08.04.13.54.26.6
MRI 32ch (%)− 10.6− 7.7− 9.5− 11.1− 6.8− 6.2
p value0.0070.0110.1290.0530.0500.001