Compressed
sense
Compressed sensing is a signal processing technique built on the fact that signals contain redundant information. In MR this technique is used to reconstruct a full image from severely under-sampled data (in k-space) while maintaining virtually equivalent image quality.
The time which can be gained with Compressed SENSE can allow you to increase productivity and diagnostic confidence, and enhance patient comfort at the same time.
How does CS work?
MCH CS Goals + Potential Projects
Optimisation of Neonatal / Paediatric Brain MRI parameters
Michael Ditchfield
James Stegement
Swan Siew
Jeff Chen
Scott Stewart
Neonatal brain MRI is challenging because of the absence of significant myelination and greater water content of the neonatal brain. Paediatric brain adds the complexity of different myelination changes throughout their development, as well as keeping still for duration of time.
Optimisation and utilising different 2D and 3D sequences by variation in imaging parameters will be performed, including CS techniques to further reduce scan time, improve resolution and workflow.
Fast paediatric MRI Stroke code imaging as one stop modality
Ronil Chandra
Shalini Amukotuwa
Jeff Chen
Angela Borella
Aims to explore the use of MRI in children and adult with possible stroke as a replacement for CT.
Exploring the effectiveness of sequences such as 3D ASL/ 3D APT/ REACT / 4D TRAK XD of neck vessels that provides high temporal (~50 ms) / spatial resolution for paediatric population with the exploration of CS
Innovations of sequences and 3D imaging for Fetal MRI at 3T
Stacy Goergen
Jeff Chen
Fetal MRI is challenging at 3T due to the increased susceptibility and standing wave artefacts.
Aims to explore sequences to improve diagnostic outcomes, 3D imaging for volume assessment of fetal brain growth by utilising CS and other advanced techniques such as MR Spectroscopy (Creatine levels) and DTI in fetal brain.
Black Blood (vessel wall) MRI imaging for paediatric patients
Stacy Goergen
Michael Ditchfield
Jeff Chen
Aims to explore the use of MRI Black Blood imaging in children to explore other diagnostic values the sequence could bring in the paediatric population. Will this sequence be the gold standard in post-contrast brain imaging with CS?
4D flow MRI
intracranial + congenital cardiac
Cardiac
Michael Ditchfield
Suraj Varma
Jeff Chen
Neuro Intervention
Ronil Chandra
Julian Maingard
Shalini Amukotuwa
Jeff Chen
Aims to explore the use of 4D flow MRI with CS to measure qualitatively and quantitatively flow changes pre and post stented aneurysms for clinical use. As well as congenital cardiac flow dynamics in the great vessels.
3D Imaging with compressed sense
Michael Ditchfield
Surekha Kumbla
Jeff Chen
Aims to explore the use of CS to explore 3D sequences in paediatric MRI in clinical use for different body regions.
Brain / Neck / Spine / Cardiac / Abdomen / Pelvis / NAI Whole Body studies
Compressed sense in breath hold studies
Michael Ditchfield
James Stegement
Swan Siew
Jeff Chen
Breath-hold studies have always been a challenge for paediatric population. Will CS be able to improve the quality of the images with shorter breath holds? As well as utilising motion control technique (3D-VANE) to improve diagnostic confidence.
Breath-hold studies include thorax, cardiac, abdomen and pelvis.
Potential Projects with SW 5.6
3D ASL + 4D TRANCE
Shalini Amukotuwa
Jeff Chen
Long label delay ASL
Moya Moya
Aneurysm
Ultra Hi-resolution TOF MRA w/ Spiral TOF
Ronil Chandra
Shalini Amukotuwa
Jeff Chen
Pushing the boundary of ultra hi-reslution TOF MRA to see small vessels from with CS.
3D APT w/ Compressed sense
Michael Ditchfield
Stacy Goergen
James Stegeman
Jeff Chen
The application of the CS-SENSE technique to CEST acquisition offers a potentially significant scan time reduction and robustness to motion artefacts. Accelerated CEST imaging based on CS-SENSE can be integrated easily into the clinical protocol and used for a wide range of clinical applications, particularly the rapid evaluation of acute stroke and pediatric patients?