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Result: Searchterm 'Meter'
found in 42 messages |
Result Pages: 1 [2] 3 4 5 6 7 8 9 |
More Results: Database (127) News Service (31) Resources (36) |
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Nancy Dudek
Fri. 26 Aug.05, 00:25
[Start of: '3T imaging parameters' 2 Replies]
Category:
Sequences and Imaging Parameters |
3T imaging parameters |
Hi
Am looking for the ranges of acceptable TR and TE's for standard spin echo and gradient echo sequences on a 3T.
Does anyone know these or tell me where I can find this info?
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Gina Key
Sat. 27 Jan.24, 09:33
[Reply (1 of 2) to: 'IDEAL sequence help' started by: 'gianluca turcatel' on Mon. 10 Jan.22]
Category:
General |
IDEAL sequence help |
To calculate the Proton Density Fat Fraction (PDFF) from MRI images of the liver acquired using LMS IDEAL (Iterative Decomposition of Water and Fat with Echo Asymmetry and Least Squares Estimation) with optimized low flip angles, you'll typically have multiple image sets corresponding to different echoes. The fat and water signals are separated based on their chemical shift differences. Look for image sets labeled as Water, Fat, or PDFF (Proton Density Fat Fraction). Depending on the software or DICOM tags used, the images may be explicitly labeled, or you may need to review the sequence parameters to determine which set corresponds to fat or water.
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Dan Lopez
Sun. 27 Aug.23, 00:03
[Start of: 'Improving MEDIC/MERGE/M-ffe and GRE/FFE image quality' 1 Reply]
Category:
Sequences and Imaging Parameters |
Improving MEDIC/MERGE/M-ffe and GRE/FFE image quality |
I work on an Ingenia Elition Philips scanner. I'm having trouble with Axial C-spine sequences for both M-ffe and FFE. On the M-ffe there is always motion in the cord and the contrast is poor. With the FFE the closer we get to the lungs the worse the quality becomes. There is usually loss of signal and the image doesn't look uniform. I've tried a bunch of different parameter combinations to try giving it more signal and contrast while decreasing the motion in the cord but it never seems to look that good. Any suggestions would be appreciated.
Mffe & FFE
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William Richardson
Tue. 20 Jun.17, 12:33
[Start of: 'MRI 1w/kg sequences Siemens Avanto FIT' 0 Reply]
Category:
Sequences and Imaging Parameters |
MRI 1w/kg sequences Siemens Avanto FIT |
I have recently been asked to build protocols for Spines and extremities that are 1 watt per kilogram SAR. In speaking with Applications at Siemens they inform me that I can only change certian parameters to help lower SAR but it will all be dependent upon each patient and which sequences are running. I need to present to our MRI QA commitiee if we can or if we cannot do 1w/kg SAR as we are determining if we can scan cochlear implants? Does anyone have any ideas or solutions?
Thank You
Will R.
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