spin echo


Also found in: Wikipedia.

spin ech·o

a commonly used technique to recover T1 and T2 relaxation signals in magnetic resonance imaging, by using a 180° inverting pulse in the pulse sequence to compensate for loss of transverse magnetization caused by magnetic field inhomogeneities.

spin echo

An MRI term for the reappearance of NMR signal after the free induction decay (FID) ends, caused by reversal (rephasing) of the dephasing spins by specific RF pulse sequences or pairs of field gradient pulses, applied in time shorter than or on the order of T2.
Proper selection of the echo time of the pulse sequence can help control the amount of T1 or T2 contrast present in the image.

spin echo

(spin ek'ō)
A commonly used technique to recover T2 relaxation signals in magnetic resonance imaging, by using a 180-degree inverting pulse in the pulse sequence to compensate for loss of transverse magnetization caused by magnetic field inhomogeneities.
References in periodicals archive ?
Scientists around the world compete for the coveted opportunity to use the neutron spin echo spectrometer at NIST, the National Institute of Standards and Technology Centre for Neutron Research in the United States.
Spin echo (SE) T1A, PDA, and fast spin echo (FSE) T2A slices on sagittal plane and then SE T1A, PDA and FSE T2A slices on coronal plane were obtained.
Brain MRI protocol including axial T2-weighted turbo spin echo (TR:3600, TE:87 ms; slice thickness 5 mm; gap 1.5 mm) and sagittal T2-weighted spin echo (TR:3600, TE: 87 ms; slice thickness 5 mm; gap 1.5 mm) was used.
This protocol used Dixon based imaging for fat suppression with both series, where T2-weighted images were acquired using a fast spin echo (FSE) triple echo Dixon sequence (37) and T1-weighted images were acquired using a dual-echo fast spoiled gradient echo (FSPGR) sequence (38).
The ACL is best visualized with a turbo spin echo (TSE) sagittal intermediate weighted sequence and axial intermediate weighted with fat-suppression sequence.
The standardized protocols consist of the following scanning sequences: sagittal T1-weighted spin echo, axial T2-weighted fast spin echo, coronal oblique fast fluid-attenuated inversion recovery, coronal oblique fast multiplanar inversion recovery, axial diffusion (single-shot, spin echo planar), b = 1000, all directions), and axial three-dimensional spoiled gradient recalled echo.
The aim of this study was to evaluate the efficacy of T2-weighted turbo spin echo magnetic resonance imaging for diagnosing SSCD and to compare the size of dehiscence between CT imaging and MRI.
Cranial magnetic resonance imaging (MRI) with sagittal T2 fast spin echo (FSE), axial T2 FSE, axial T1 fluid-attenuated inversion recovery (FLAIR) and coronal T2 FLAIR sequences were performed.
This is a spin echo sequence also referred to as black blood imaging.
Penn, "Full-brain T1 mapping through inversion recovery fast spin echo imaging with time-efficient slice ordering," Magnetic Resonance in Medicine, vol.
Pulse sequences being considered consisted of spin echo (SE), gradient echo (GRE), spoiled gradient echo (SP-GRE), inversion recovery spin echo (IR-SE), and inversion recovery gradient echo (IR-GRE).
MRI showed that the osteolytic mass filling the proximal femur was hypointense on spin echo T1-weighted images, and slightly hyperintense on spin echo T2-weighted images, which represented a few small bright foci.