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| Result: Searchterm 'Slice'
found in 36 messages |
| Result Pages: [1] 2 3 4 5 6 7 8 |
More Results:  Database (177) News Service (6) Resources (5) |
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Davit Kharshiladze
Sun. 20 Mar.22,
03:22
[Start of:
'Slice Interpolation'
0 Reply]
 Category:
Sequences and Imaging Parameters
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| Slice Interpolation |
Hod do I disable slice interpolation in FFE3D sequence on Toshiba vantage 3T
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payam b
Tue. 29 Sep.09,
00:48
[Start of:
'Question: Slice Thickness and Slice spacing'
0 Reply]
Category:
Applications and Examinations
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| Question: Slice Thickness and Slice spacing |
Hi every body, I have a question which may seem a simple one:
What is the relation between the slice thickness and slice spacing in MR images?
If we zero pad in slice direction , are we changing the slice thickness or slice spacing or maybe both of them?
Image
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Reader Mail
Wed. 4 Oct.06,
17:58
[Start of:
'interleaved slices and mean intensity difference in adjacent slices'
1 Reply]
Category:
General
|
| interleaved slices and mean intensity difference in adjacent slices |
On the crosstalk artifact page it says that when interleaved slice acquisition is used, there can be large mean intensity difference between adjacent slices. I would appreciate it if someone could let me know what is the theoretical basis for this and what is meant by "large".
Thanks!
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Renate Semrau
Mon. 28 Aug.23,
07:23
[Reply (1 of 2) to:
'Improving MEDIC/MERGE/M-ffe and GRE/FFE image quality'
started by: 'Dan Lopez'
on Sun. 27 Aug.23]
Category:
Sequences and Imaging Parameters
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| Improving MEDIC/MERGE/M-ffe and GRE/FFE image quality |
Hi,
Sequences with multiple echoes are unfortunately sensitive to motion and flow artifacts, with the mFFE the echoes are still cumulated afterwards. The use of the head-neck coil provides better SNR. Important are good flow compensation, rest slab, try out foldover direction l/r vs. a/p. Shimming may help, synergy is sometimes better as clear, don't take too many slices, but maybe the signal loss is also a technical problem. Problems in the lung region are common. In short, we use 2D T2 TSE with continuous flow comp.
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Bob Owen
Sun. 10 Apr.22,
11:49
[Start of:
'Query on PROPELLER enhancement'
0 Reply]
Category:
Artifacts
|
| Query on PROPELLER enhancement |
I looked at an MRI from 2016 I originally had for a tongue swelling to see if it might show evidence for Optic neuritis which I believe I had at that time. I noticed coronal slices show the outer circumference of the optic nerve as especially bright and ragged or irregular along much of the length (both eyes). This looks like donut sign for ON but I wonder if it could be an artefact of the imaging process as it used something called PROPELLER which I believe enhances the image. An axial slice also appears to show the tram track sign. Can anyone comment. I have uploaded a screenshot of just a single coronal slice
See uploaded slice
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