MR-assisted PET motion correction in simultaneous PET/MRI studies of dementia subjects.

ABSTRACT:

Background

Subject motion in positron emission tomography (PET) studies leads to image blurring and artifacts; simultaneously acquired magnetic resonance imaging (MRI) data provides a means for motion correction (MC) in integrated PET/MRI scanners.

Purpose

To assess the effect of realistic head motion and MR-based MC on static [¹⁸ F]-fluorodeoxyglucose (FDG) PET images in dementia patients.

Study type

Observational study.

Population

Thirty dementia subjects were recruited.

Field strength/sequence

3T hybrid PET/MR scanner where EPI-based and T₁ -weighted sequences were acquired simultaneously with the PET data.

Assessment

Head motion parameters estimated from high temporal resolution MR volumes were used for PET MC. The MR-bas

SUBMITTER: Chen KT 

PROVIDER: S-EPMC6129224 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature