Publication

UTE-Dixon Fat-Water Imaging

2024

Abstract

Fat-water imaging is combined with techniques measuring short-T2 tissues, especially ultrashort echo time (UTE) techniques. Specifically, techniques combining both UTE and Dixon imaging are labeled as UTE-Dixon imaging techniques, which are applied both to suppress the fat signal in UTE acquisitions and to determine tissue electron density properties. This work aims to first explain the advantages of Dixon imaging for fat suppression in UTE acquisitions used in the depiction of tissues with short T2s. The most important technical aspects of UTE-Dixon imaging are then reviewed, including the most frequently employed data acquisition techniques and previously reported water-fat separation approaches. The most important up-to-date applications of UTE-Dixon imaging are finally described with a particular focus on the determination of positron emission tomography (PET) attenuation correction in PET-magnetic resonance imaging (MRI) and on the imaging of short-T2 tissues in musculoskeletal radiology.

Official source

https://infoscience.epfl.ch/entities/publication/309351aa-5175-4be0-b084-99accf2f6ed4

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2024

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/309351aa-5175-4be0-b084-99accf2f6ed4

About this result

Related concepts (32)

Magnetic resonance imaging

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans.

Medical imaging

Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities.

Positron emission tomography

Positron emission tomography (PET) is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption. Different tracers are used for various imaging purposes, depending on the target process within the body. For example, -FDG is commonly used to detect cancer, NaF is widely used for detecting bone formation, and oxygen-15 is sometimes used to measure blood flow.

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UTE-Dixon Fat-Water Imaging

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