Validation of segmented and real-time EPI phase contrast flow quantification against segmented gradient echo sequences

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Validation of segmented and real-time EPI phase contrast flow quantification against segmented gradient echo sequences

Background MR based Flow Quantification is an established method for measuring cardio-pulmonary haemodynamics, but is challenging to perform in situations where it may be advantageous to asses real-world physiological behavior, for example in exercise. The availability of a new real time flow quantification sequence presents the opportunity to measure velocity and flow without these challenges....

متن کامل

Delayed contrast-enhanced cardiac MRI at an open 1.0T MR-system comparison of conventional segmented 3D gradient echo and phase-sensitive inversion recovery sequences: initial results

Background Delayed contrast enhanced (DE) cardiac MR imaging (cMRI) has become the gold standard for the in vivo detection and quantification of myocardial infarcts (MI). Up to now, cMRI had to be performed in a closed bore environment due to technical constraints of the existing open low-field MR scanners. The introduction of an open 1.0T MR-system with high gradient performance has paved the ...

متن کامل

Compressed sensing fMRI using gradient-recalled echo and EPI sequences

Compressed sensing (CS) may be useful for accelerating data acquisitions in high-resolution fMRI. However, due to the inherent slow temporal dynamics of the hemodynamic signals and concerns of potential statistical power loss, the CS approach for fMRI (CS-fMRI) has not been extensively investigated. To evaluate the utility of CS in fMRI application, we systematically investigated the properties...

متن کامل

Variable Flip Angles and Echo Train Lengths in Segmented 3D-EPI at 3 and 7 Tesla

Purpose: To increase the signal sensitivity (temporal SNR/√acquisition time) of high-resolution functional MRI by means of two novel segmented 3D-EPI modifications: the use of variable flip angles (vFA) and, optionally, the use of variable echo train lengths (vETL) facilitated by employing elliptical k-space subsampling. While vFA has the potential to increase the base signal-to-noise ratio, vE...

متن کامل

Detecting Diabetes Mellitus Gradient Vector Flow Snake Segmented Technique

1 Head and Associate Professor, Dept. of Computer Science, Vellalar College for Women, Erode, Tamilnadu, India 2 Research Scholar, Department of Computer Science, Vellalar College for Women, Erode, Tamilnadu, India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract -Diabetes is a chronic disease an...

متن کامل

ذخیره 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: Journal of Cardiovascular Magnetic Resonance

سال: 2015

ISSN: 1532-429X

DOI: 10.1186/1532-429x-17-s1-o66