What is Fspgr sequence?
What is Fspgr sequence?
Breath-hold contrast material–enhanced three-dimensional (3D) fast spoiled gradient-echo (FSPGR) sequences are valuable techniques for evaluation of renal arteries and veins and diagnosis of significant renal arterial stenosis at magnetic resonance (MR) imaging.
What is T2 Relaxometry?
T2 relaxometry is a quantitative MR imaging modality that provides an estimate of the T2 relaxation constant of the imaged tissue. T2 can be altered due to cell damage, with increased T2 relaxation time arising from higher fluid content and potential pathology in the brain in both grey and white matter.
What is haste in GE?
HASTE is an echo-planar fast spin echo sequence trademarked by Siemens. The expanded acronym fairly completely describes what it entails: Half-Fourier Acquisition Single-shot Turbo spin Echo imaging.
What is spoiled gradient in MRI?
Spoiled gradient echo MRI (also known as incoherent gradient echo) is an MRI technique which destroys residual transverse magnetization at the end of each excitation cycle.
What is a Fspgr in MRI?
We used a method of FSPGR (fast spoiled gradient-echo) of three-dimensional MRI data that improves the anatomical display of the sulcal structure of the hemispheric convexities. It also reduces the asymmetric sampling of gray-white matter that may lead to false-positive results.
What is high signal on MRI?
High signal seen on these images indicates a pathological process such as infection, tumour, or areas of demyelination – as in this patient with multiple sclerosis.
What is MRI Relaxometry?
Relaxometry is measurement of relaxation times from MR images. T1, T2 and T2* can be estimated using the appropriate pulse sequence and parameters. T2 relaxometry has found useful in quantitating signal changes on T2-weighted images as in evaluating mesial temporal sclerosis.
What is Vibe sequence?
Volumetric Interpolated Breath-hold Examination (VIBE) sequence is a modified form of FLASH sequence, which permits dynamic and high-resolution imaging under 30 seconds breath-hold.
What is T2 haste?
HASTE (HAlf fourier Single- shot Turbo spin-Echo) is a sin- gle-section T2-weighted se- quence that acquires images in less than 1 second. Images are breathing independent and possess a variety of other fea- tures useful for imaging the ab- domen.
What is MRI spoiling?
Spoiling refers to the disruption of transverse coherences that may persist from cycle to cycle in a GRE sequence. Spoiling ensures that immediately before each RF-pulse, the steady-state magnetization has no transverse components.
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