Gradient echo is a magnetic resonance imaging (MRI) sequence that has wide variety of applications, from magnetic resonance angiography to perfusion MRI and diffusion MRI. Rapid imaging acquisition allows it to be applied to 2D and 3D MRI imaging. Gradient echo uses magnetic gradients to generate a signal, instead of using 180 degrees radiofrequency pulse like spin echo; thus leading to faster image acquisition time.[1]
^Hargreaves BA (December 2012). "Rapid gradient-echo imaging". Journal of Magnetic Resonance Imaging. 36 (6): 1300–1313. doi:10.1002/jmri.23742. PMC 3502662. PMID 23097185.
they become coherent, and thus signal (or "echo") is generated to form images. Unlike spin echo, gradientecho does not need to wait for transverse magnetisation...
Gradientecho is a magnetic resonance imaging (MRI) sequence that has wide variety of applications, from magnetic resonance angiography to perfusion MRI...
so-called spin-warp method). In a standard spin echo or gradientecho scan, where the readout (or view) gradient is constant (e.g., G), a single line of k-space...
area and hypodense odema around the haemorrhagic site. MRI sequence of gradientecho and susceptibility weighted imaging (SWI) are useful in detecting microbleeds...
MRI) is a particular sequence of magnetic resonance imaging. It is a gradientecho sequence which combines a low-flip angle radio-frequency excitation...
however, changes the phase-encoding gradient for each of these echoes (a conventional multi-echo sequence collects all echoes in a train with the same phase...
inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does...
idea of the expected shape of the activation image. Typical gradient-echo EPI uses two gradient coils within a slice, and turns on first one coil and then...
scan in detecting such small hemorrhagic contusions, with the use of gradientecho sequence. Contusions are more commonly seen in the brain parenchyma...
hemorrhage and iron storage. SWI uses a fully flow compensated, long echo, gradient recalled echo (GRE) pulse sequence to acquire images. This method exploits...
synovitis eroding the posterior cortex of the femoral neck. Sagittal T2* gradientecho image showing a posterior soft tissue mass with hypointense areas secondary...
the pathophysiological basis for cavernous hemangioma development. Gradient-echo T2WI magnetic resonance imaging (MRI) is most sensitive method for diagnosing...
intentional destruction of evidence in a legal case Spoiling of a gradientecho magnetic resonance sequence Spoil (disambiguation) Spoiled (disambiguation)...
flop sign.[citation needed] On magnetic resonance imaging, multiecho gradientecho images can be used to determine the percent fat fraction of the liver...
probability of MS. The prevalence of MS from a geographic standpoint resembles a gradient, with MS being more common in people who live farther from the equator...
sequences such as spin echo with T1 and T2-weighted sequences, inversion recovery, chemical shift selective techniques, and gradientecho techniques are used...
avoiding gradient-echo imaging when metal is present. A technique called MARS (metal artifact reduction sequence) applies an additional gradient, along...
Gadolinium contrast is injected, and rapid repeated imaging (generally gradient-echoecho-planar T2*-weighted) quantifies susceptibility-induced signal loss...
orbital angular momentum superposition state for 100 nanoseconds. GEM (GradientEcho Memory) is a protocol for storing optical information and it can be...
imaging (MRI), particularly using a specific imaging technique known as a gradient-echo sequence MRI, which can unmask small or punctate lesions that may otherwise...