Podrobnosti studentského projektu

Téma:Korekce pohybu pro ASL (arterial spin labeling) MRI obrazy
Katedra:Katedra kybernetiky
Vedoucí:Ing. Jan Petr, Ph.D.
Vypsáno jako:Diplomová práce, Bakalářská práce, Semestrální projekt
Popis:Arterial spin labeling (ASL) is an MRI technique that uses
magnetically labeled blood as an endogenous tracer to image
cerebral perfusion. Compared to the other techniques for
measuring perfusion, it doea not need gadolinium-based
contrast-agents or radioactive tracers. Its complete
non-invasiveness makes it an ideal candidate for longitudinal
perfusion studies or for use in pediatric and healthy

The acquisition time of ASL is several minutes, making ASL
susceptible to head motion. There are several methods for motion
correction. However, these methods were mainly developed for
functional MRI and are not so well suited for ASL that has an
inherent difference between the control and labeled images. The
goal of this project is to develop a motion correction technique
adapted for advanced ASL sequences. This technique will
use a specialized cost-criterion - brain boundaries, edges, or other more
advanced features will be used for the registration. This
registration will be tested on a synthetic dataset generated
using an ASL-DRO and also on in-vivo datasets. The best approach
will be evaluated and implemented within the ExploreASL pipeline.

The technical supervision of the project will be guaranteed by
Dr. J. Petr (Helmholtz-Zentrum Dresden-Rossendorf, Germany). The
project will be done in collaboration with Dr. H. Mutsaerts and
B. Padrela (Amsterdam UMC, the Netherlands) who will grant the
student access to data, and Dr. A. Oliver-Taylor (GSP Phantom,
UK) who will supervise the data generation with the ASL-DRO. The
student will work with the ExploreASL software for the ASL data
analysis and write custom Matlab scripts for the data evaluation.
Literatura:Alsop et al. Recommended Implementation of Arterial Spin-Labeled Perfusion MRI for Clinical Applications: A Consensus of the ISMRM Perfusion Study Group and the European Consortium for ASL in Dementia.” Magn Reson Med 2015

Garcia et al. Efficiency of Inversion Pulses for Background Suppressed Arterial Spin Labeling. Magn Reson Med 2005

Gunther et al. Highly efficient accelerated acquisition of perfusion inflow series by cycled arterial spin labeling. ISMRM 2017

Heijtel et al. Accuracy and Precision of Pseudo-Continuous Arterial Spin Labeling Perfusion during Baseline and Hypercapnia: A Head-to-Head Comparison with 15O H2O Positron Emission Tomography. NeuroImage 2014

Hernandez-Garcia et al. Recent Progress in ASL. NeuroImage 2018

Mutsaerts et al. ExploreASL: An Image Processing Pipeline for Multi-Center ASL Perfusion MRI Studies. NeuroImage 2020

Thomas et al. Regional variation of cerebral blood flow and arterial transit time in the normal and hypoperfused rat brain measured using continuous arterial spin labeling MRI. J Cereb Blood Flow Metab 2006

Wang et al. Empirical optimization of ASL data analysis using an ASL data processing toolbox: ASLtbx. Magn Reson Imaging 2008

Williams et al. Magnetic Resonance Imaging of Perfusion Using Spin Inversion of Arterial Water Proc Nat Academy Sci 1992.

Xie et al. Optimal design of pulsed arterial spin labeling MRI experiments. Magn Reson Med 2008
Za obsah zodpovídá: Petr Pošík