Attenuation correction (AC) with an ultrashort echo time (UTE) sequence has recently been
used in combination with segmentation for cortical bone identification for brain PET/MR …

Purpose To assess the quantitative accuracy of current MR attenuation correction (AC)
methods in neurological PET, in comparison to data derived using CT AC. Methods This …

Abstract Aim Combined PET/MR systems have now become available for clinical use. Given
the lack of integrated standard transmission (TX) sources in these systems, attenuation and …

A spatial bias in brain PET/MR exists compared with PET/CT, because of MR-based
attenuation correction. We performed an evaluation among 4 institutions, 3 PET/MR …

ABSTRACT Purpose In quantitative PET/MR imaging, attenuation correction (AC) of PET
data is markedly challenged by the need of deriving accurate attenuation maps from MR …

Purpose The impact of MR-based attenuation correction on PET quantitation accuracy is an
ongoing cause of concern for advanced brain research with PET/MR. The purpose of this …

Inaccuracy in MR image–based attenuation correction (MR-AC) leads to errors in
quantification and the misinterpretation of lesions in brain PET/MRI studies. To resolve this …

Simultaneous PET/MR of the brain is a promising technology for characterizing patients with
suspected cognitive impairment or epilepsy. Unlike CT, however, MR signal intensities do …

Several factors have to be considered for implementing an accurate attenuation-correction
(AC) method in a combined MR-PET scanner. In this work, some of these challenges were …

PET/MRI scanners cannot be qualified in the manner adopted for hybrid PET/CT devices.
The main hurdle with qualification in PET/MRI is that attenuation correction (AC) cannot be …