Clinical ultrashort echo time imaging of bone and other connective tissues
نویسندگان
چکیده
منابع مشابه
An Independent Multichannel Imaging Research System for Ultrashort Echo Time Imaging on Clinical MR Systems
Most clinical magnetic resonance systems do not have access to ultrashort echo time (UTE) imaging. The aim of this project was to develop a fully independent imaging insert for clinical MR systems to provide this new research application without disturbing routine operation. The initial clinical target for the system was improved orthopedic upper limb imaging using ultrashort repeat and echo ti...
متن کاملUltrashort echo time magnetization transfer (UTE-MT) imaging of cortical bone.
Magnetization transfer (MT) imaging is one way to indirectly assess pools of protons with fast transverse relaxation. However, conventional MT imaging sequences are not applicable to short T2 tissues such as cortical bone. Ultrashort echo time (UTE) sequences with TE values as low as 8 µs can detect signals from different water components in cortical bone. In this study we aim to evaluate two-d...
متن کاملUltrashort Echo Time Imaging of Cortical Bone at 7 Tesla Field Strength
Introduction MRI at ultra-high field (UHF) strength of 7 Tesla has been increasingly used and optimized for in vivo applications over the past few years. In particular, the increased signal to noise ratio (SNR) renders this new modality very attractive for imaging soft tissues in the human body. More solid or semi-solid tissues such as trabecular and cortical bone provide little to no signal in...
متن کاملDesigning long-T2 suppression pulses for ultrashort echo time imaging.
Ultrashort echo time (UTE) imaging has shown promise as a technique for imaging tissues with T2 values of a few milliseconds or less. These tissues, such as tendons, menisci, and cortical bone, are normally invisible in conventional magnetic resonance imaging techniques but have signal in UTE imaging. They are difficult to visualize because they are often obscured by tissues with longer T2 valu...
متن کاملOptimized 3D ultrashort echo time pulmonary MRI.
PURPOSE To optimize 3D radial ultrashort echo time MRI for high resolution whole-lung imaging. METHODS 3D radial ultrashort echo time was implemented on a 3T scanner to investigate the effects of: (1) limited field-of-view excitation, (2) variable density readouts, and (3) radial oversampling. Improvements in noise performance and spatial resolution were assessed through simulation and phanto...
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ژورنال
عنوان ژورنال: NMR in Biomedicine
سال: 2006
ISSN: 0952-3480,1099-1492
DOI: 10.1002/nbm.1100