Conveners
Session 9 - Software and Quantification: attenuation correction – part 2
- Niccolò Camarlinghi (University of Pisa and INFN Pisa, Italy)
Gaspar Delso
(GE Healthcare)
5/22/18, 6:00 PM
Talk
This work details a new approach to acquire and reconstruct zero echo-time (ZTE) data, aimed at removing chemical shift artifacts which is impairing pseudo-CT generation. In order to achieve this a multi-repetition readout scheme was implemented, where consecutive echoes were acquired with different read-out bandwidths (rBW). In the reconstruction data was separated into an in-phase, and an...
Amalie Hindsholm
(Rigshospitalet)
5/22/18, 6:20 PM
Talk
AIM: Accurate MR-based attenuation correction (MR-AC) for use in combined clinical PET/MR systems is crucial in order to achieve quantifiable PET images. The main challenge has been to represent continuous bone density. The ultra-short echo time (UTE) MR sequence has been proposed in several methods to be utilized for representation of bone, subsequently extracted using an R2*-map.
The...
Gaspar Delso
(GE Healthcare)
5/22/18, 6:40 PM
Talk
In brain PET/MR, the zero echo-time (ZTE) pulse sequence has already been shown to be a valuable tool to derive pseudo-CT and attenuation correction maps thanks to its ability to capture the short T2* signal from bone tissue. Most studies in this area have used a moderate resolution (2.4 mm) to minimize the acquisition time in a generic clinical setting and few studies have used a high...
