Abstract
Fat-suppression technology of magnetic resonance is very important in clinical practice.This article is written to interpret the principle, advantages/disadvantages and clinical applications of some regular fat-suppression sequences in the diagnosis of Bone-Joint Disease, including 1) frequency-selective saturation (FS); 2) short-TI inversion recovery (STI-R); 3)frequency selective inversion pulse; 4) fat suppression water or fat selective excitation technique; 5) Dixon technology and 6) magnetization transfer contrast (MTI).
Highlights
Fat tissue contains amount of hydrogen protons which show high signal in both T1-weighted imaging (T1WI) and T2-weighted imaging (T2WI) sequence, which cover the signal of other tissues, and produce chemical shift artifact
Fat suppression MR pulse sequence can suppress the signal from adipose tissue, so it can be used in routine magnetic resonance imaging in order to reduce chemical shift artifact and improve visualization of uptake of contrast material
In bone marrow abnormalities of foot and ankle, Short-TI Inversion Recovery (STIR) images and T1-weighted contrast-enhanced fat-suppressed MR images demonstrate almost identical imaging patterns, and diagnoses determined with these findings show little difference
Summary
Fat tissue contains amount of hydrogen protons which show high signal in both T1-weighted imaging (T1WI) and T2-weighted imaging (T2WI) sequence, which cover the signal of other tissues, and produce chemical shift artifact. Fat suppression MR pulse sequence can suppress the signal from adipose tissue, so it can be used in routine magnetic resonance imaging in order to reduce chemical shift artifact and improve visualization of uptake of contrast material. This imaging sequence is significant in the diagnosis of musculoskeletal diseases. This article is written to describe the principles of these different kinds of fat-suppression MR sequences and their applications for the musculoskeletal system
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