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| | | | | | | Searchterm 'AIN' was also found in the following services: | | | | |
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(HS) A method in which approximately one half of the acquisition matrix in the phase encoding direction is acquired. Half scan is possible because of symmetry in acquired data. Since negative values of phase encoded measurements are identical to corresponding positive values, only a little over half (more than 62.5%) of a scan actually needs to be acquired to replicate an entire scan.
This results in a reduction in scan time at the expense of signal to noise ratio. The time reduction can be nearly a factor of two, but full resolution is m aint ained.
Half scan can be used when scan times are long, the signal to noise ratio is not critical and where full spatial resolution is required. Half scan is particularly appropriate for scans with a large field of view and relatively thick slices; and, in 3D scans with many slices.
In some fast scanning techniques the use of Half scan enables a shorter TE thus improving contrast. For this reason, the Half scan parameter is located in the contrast menu.
More information about scan time reduction; see also partial fourier technique. | | | | • View the DATABASE results for 'Half Scan' (4).
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From Philips Medical Systems;
the Intera 3 T high field system, the first with a compact magnet, which is built on the same platform as the 1.5 T, is targeted to high-end neurological, orthopedic and cardiovascular imaging applications with maximum patient comfort and acceptance without compromising image quality and clinical performance. Useable for clinical routine and research.
The Intera systems offer diffusion tensor imaging ( DTI) fiber tracking that measures movement of water in the brain and can therefore detect areas of the brain where normal movement of water is disrupted.
Device Information and Specification
CLINICAL APPLICATION
Whole body
CONFIGURATION
Short bore compact
Standard: head, body, C1, C3; Optional: Small joint, flex-E, flex-R, endocavitary (L and S), dual TMJ, knee, neck, T/L spine, breast; Optional phased array: spine;; Optional SENSE coils: Flex body, flex cardiac, neuro-vascular, head
SE, Modified-SE, IR (T1, T2, PD), STIR, FLAIR, SPIR, FFE, T1-FFE, T2-FFE, Balanced FFE, TFE, Balanced TFE, Dynamic, Keyhole, 3D, Multi Chunk 3D, Multi Stack 3D, K Space Shutter, MTC, TSE, Dual IR, DRIVE, EPI, Cine, 2DMSS, DAVE, Mixed Mode; Angiography: Inflow MRA, TONE, PCA, CE MRA
TR
Min. 1.6 (Master) msec
TE
Min. 0.5 (Master) msec
RapidView Recon. greater than 500 @ 256 Matrix
0.1 mm (Omni), 0.05 mm (Power)
128 x 128, 256 x 256,512 x 512,1024 x 1024 (64 for Bold img)
Variable in 1% increments
Lum.: 120 cd/m2; contrast: 150:1
Variable (op. param. depend.)
POWER REQUIREMENTS
380/400 V
STRENGTH
30 (Master) mT/m
| | | | • View the DATABASE results for 'Intera 3.0T™' (2).
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With an open configuration MRI system neurosurgical procedures can be performed using image guidance. Open MRI can be used to guide interventional treatments or procedures, such as a biopsy.
Intraoperative MRI allows lesions to be precisely localized and targeted.
Constantly updated images, correlated with images obt ained pre-operatively, help to eliminate errors that can arise during framed and frameless stereotactic surgery when anatomic structures alter their position due to shifting or displacement of, e.g. brain parenchyma. Intraoperative MRI can help with the identification of normal structures, such as blood vessels and is helpful in optimizing surgical approaches, achieving complete resection of intracerebral lesions, determining tumor margins and monitoring potential intraoperative complications. | | | | • View the DATABASE results for 'Intraoperative Magnetic Resonance Imaging' (4).
| | | • View the NEWS results for 'Intraoperative Magnetic Resonance Imaging' (1).
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