Sentence examples for headphone attenuation from inspiring English sources

CT data revealed headphone attenuation values of 350 500 HU.

The activity underestimation present when neglecting headphone attenuation (uncorrected) decreases with increasing distance from the coil.

Correction for headphone attenuation using xMLAA compensates for the activity underestimation.

A template-based approach could then be used to incorporate headphone attenuation into PET image reconstruction.

Fig. 2 Axial and coronal PET/CT images of the cylinder phantom: CT scan (a), PET scan with headset but without headphone attenuation correction (b, with contour of headphones), and PET scan with headphone attenuation correction (c).

Neglecting headphone attenuation (uncorrected) results in an activity underestimation compared to the CT-based reconstruction (CTAC) for regions embraced by the headphones.

MR headphones are attenuation sources affecting PET quantification in hybrid PET/MRI.

Currently, the influence of headphones on PET attenuation is not accounted for in PET image reconstruction.

PET image reconstruction (TOF-OSEM 3i21s) was performed with either of the two CT datasets (with and without headphones) used for attenuation correction.

CT images of the cylinder phantom with the headphones in place revealed homogeneous X-ray attenuation of the headphone material of 350 500 Hounsfield units (HU; for comparison, water 0 HU; compact bone 1000 1500 HU; Fig. 1), corresponding to linear absorption values μ at 511 keV of around 0.12 cm−1, as obtained from the machine-derived PET attenuation images [14].

Ignoring headphone or RF coil attenuation has been shown to result in regional activity underestimation values of up to 18%.