Effects of inversion time on inversion recovery prepared ultrashort echo time (IR-UTE) imaging of bound and pore water in cortical bone
نویسندگان
چکیده
منابع مشابه
Using adiabatic inversion pulses for long-T2 suppression in ultrashort echo time (UTE) imaging.
Ultrashort echo time (UTE) imaging is a technique that can visualize tissues with sub-millisecond T(2) values that have little or no signal in conventional MRI techniques. The short-T(2) tissues, which include tendons, menisci, calcifications, and cortical bone, are often obscured by long-T(2) tissues. This paper introduces a new method of long-T(2) component suppression based on adiabatic inve...
متن کاملCortical Bone Perfusion Assessment using Inversion Recovery Ultrashort TE Imaging
Target Audience: Musculoskeletal Radiologists, Bone Metabolism Researchers Purpose: Perfusion MRI studies of vertebral trabecular bone have shown a direct relation between bone perfusion and remodeling activity. Trabecular bone studies have also shown that decreases in vascularity and perfusion may contribute to increased fracture risk in older individuals. To date, perfusion MRI of the cortica...
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 کاملthe effects of time planning and task complexity on accuracy of narrative task performance
هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
Ultra-Short Echo-Time (UTE) Imaging Based Estimation of Cortical Bone Stiffness
Introduction: Accurate prediction of osteoporotic fracture risk and timely detection of treatment efficacy depend on the ability to assess bone’s mechanical competence in vivo. However, most work so far has focused on trabecular structure while cortical bone has been neglected since it is believed to remodel more slowly and also because most fractures occur at sites dominant in trabecular bone....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NMR in Biomedicine
سال: 2014
ISSN: 0952-3480
DOI: 10.1002/nbm.3228