OBJECTIVES: To implement and evaluate a dedicated receiver array coil for simultaneous positron emission tomography/magnetic resonance (PET/MR) imaging in @entity0 . METHODS: A 16-channel receiver coil design was optimized for simultaneous PET/MR imaging. To assess MR performance, the signal-to-noise ratio, parallel imaging capability and image quality was evaluated in phantoms, volunteers and @entity1 and compared to clinical standard protocols. For PET evaluation, quantitative @entity419 PET images of phantoms and seven @entity1 (14 lesions) were compared to images without the coil. In PET image reconstruction, a CT-based template of the coil was combined with the MR-acquired attenuation correction (AC) map of the phantom/ @entity1 . RESULTS: MR image quality was comparable to clinical MR-only examinations. PET evaluation in phantoms showed regionally varying underestimation of the standardised uptake value (SUV; mean 22  %) due to attenuation caused by the coil. This was improved by implementing the CT-based coil template in the AC (<2  % SUV underestimation). @entity1 data indicated that including the coil in the AC increased the SUV values in the lesions (21        9  %). CONCLUSIONS: Using a dedicated PET/MR breast coil, state-of-the-art MRI was possible. In PET, accurate quantification and image homogeneity could be achieved if a CT-template of this coil was included in the AC for PET image reconstruction. KEY POINTS:     State-of-the-art breast MRI using a dedicated PET/MR breast coil is feasible.     A multi-channel design facilitates shorter MR acquisition times via parallel imaging.     An MR coil inside a simultaneous PET/MR system causes PET photon attenuation.     Including a coil CT-template in PET image reconstruction results in recovering accurate quantification.

A 16-channel MR coil for simultaneous PET/MR imaging in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'Patient'] @entity419 :: ('MESH:D019788', 'Chemical') :: ['(18)   F-FDG'] @entity0 :: ('MESH:D001943', 'Disease') :: ['breast cancer']
@entity0 :: (MESH:D001943,Disease) :: ['breast cancer']
