MO-D-213CD-04: 4D X-Ray DSA and 4D Fluoroscopy

Medical Physics
C A Mistretta

Abstract

During the past decade the use of undersampled acquisition and constrained reconstruction have led to significant increases in data acquisition speed, SNR, spatial resolution and temporal resolution in MR imaging. When a separately acquired constraining image is combined with an angiographic time series the traditional tradeoff between spatial and temporal resolution is greatly reduced. Artifacts and limited resolution that would normally be associated with a rapid highly undersampled temporal image series are mitigated by the constrained reconstruction process which transfers the SNR and spatial resolution of the constraining image to the individual time frames. In rotational C-Arm DSA a 3D image volume is formed from all the projections acquired during the C-Arm rotation. Although the individual projections contain temporal information, the reconstructed 3D image has no temporal information and represents a composite of the vascular filling that has occurred during the iodine injection. However, the 3D cone beam CT reconstruction can be used to constrain the reconstruction of one 3D volume for each of the rotational projections. This extends the traditional DSA time series of 2D images to a series of 3D volumes at rates up to...Continue Reading

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Magnetic Resonance Imaging : JMRI
T M GristPatrick Turski
Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
C A MistrettaY Wu
Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Yuexi HuangGraham A Wright
Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Huajun SheLeslie Ying
© 2022 Meta ULC. All rights reserved