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| Result: Searchterm 'Coil'
found in 50 messages |
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More Results:  Database (193) News Service (27) Resources (17) |
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Kimberly Wilridge
Wed. 27 Sep.23,
19:37
[Reply (1 of 2) to:
'GE Signa - 17,18,19 Phantoms Found looking for 1'
started by: 'Kimberly Wilridge'
on Fri. 26 Jul.13]
 Category:
Coils
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| GE Signa - 17,18,19 Phantoms Found looking for 1 |
I submitted this question years ago. Answer to this question and anyone else with an issue in SNR testing is: it was the phantom. GE coils as with all coils have SET phantoms that should be used due to the system programming. It looks for the gaps/spaces between the phantom balls, blocks, etc. At that time of question above the FE doing the testing was using USAI phantoms (which are large blocks) and GE CTL phantoms are small/mid size balls contained in an acrylic piece. After complete rebuild of 25 CTL's figured I got bench testing these things down to a science, with T1/T2 values higher than OEM. I can thank that FE, because it made me improve my reverse engineering skills, which I've applied to so much since then.
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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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Antonio Dominin
Mon. 14 Aug.17,
00:03
[Start of:
'MRI Safety w VNS Lead Still In Body'
0 Reply]
Category:
Safety
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| MRI Safety w VNS Lead Still In Body |
Hello Everyone!rn:-)rnrnPlease forgive me in advance for making any newbie mistakes here. I am new and appreciate your kind correction of any errors that I might make.rnrnI am a patient with many, many illnesses. In 2006, I was in the deepest depths of depression and could not see any other way to treat it, other than the newly approved (then) Vagus Nerve Stimulator (VNS) for depression.rnrnNeedless to say, it did not help at all and, after over 2 years of VNS therapy, my doctor and I agreed to turn it off. (It makes the neck muscles move when it is stimulating the vagus nerve, which can get annoying after a while.)rnrnWhen I got the VNS implanted, I was told that I would never be able to have an MRI done, except with special equipment, called a transmit & receive coil. This wasn't a problem because my hospital, Olympia Medical Center, here in Los Angeles, had one of these.rnrnHowever when they upgraded their equipment in the years following my implant, they no longer had a transmit & receive coil for the new machine, and I could not find any place in LA that did have this coil.rnrnNow, since I have so many illnesses in my life, the possibility that I will need an MRI in the future is great. Therefore, I called and spoke with the assistant of the Neurosurgeon at USC Keck Medical Center that implants VNS, and he could therefore remove the VNS.rnrnHowever, the assistant said that, while he could remove the VNS device itself, he would probably have to leave the lead to the vagus nerve in the body because of it's attachment to the nerve has probably grown in at this point.rnrnMy question is this: Will I be able to safely have MRIs in the future with this lead still in my body? At this point, I am thinking that I might have to have MRIs of my brain (Parkinson’s disease, exotropia), wrist (Carpal Tunnel Syndrome), C-spine (prior to doing occipital nerve blocks). Do you have any other comments or suggestions on my situation?rnrnThank you very much for your kindest consideration of my post. I look forward to hearing back from you, and I will await your replies. rnrnBest regards,rnrn~Antonio Dominionrn:-)
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Costel Chiru
Thu. 1 Dec.16,
21:13
[Start of:
'GE Signa Explorer'
0 Reply]
Category:
General
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| GE Signa Explorer |
Did anyone know how many coils elements could be simultaneously connected to 16 ch GE Signa Explorer?rnThanks!
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Steven Ford
Thu. 17 Mar.16,
15:05
[Reply (1 of 2) to:
'Experiences with Artroscan C'
started by: 'Reader Mail'
on Fri. 3 Apr.15]
Category:
General
|
| Experiences with Artroscan C |
I know this is a really old question but I'm answering so that maybe others might learn.
The scanner you refer to is actually the E Scan (or possibly the E Scan XQ or the E Scan Opera) by Esaote.
You are correct, the flex coil for hips does not give good coverage or good signal. Most of our E Scan customers never use the coil.
A larger problem for hip studies is that the opening in the magnet and the FOV of the magnet severely limits the ability to scan patients of average and larger than average size.
the same can be said of doing shoulder exams on this scanner, in general the images are not met with happiness by the radiologists.
Steven Ford
Professional Imaging Services, Inc.
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