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| Result: Searchterm 'tr'
found in 420 messages |
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More Results:  Database (1011) News Service (1852) Resources (540) |
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mike lozito
Tue. 28 Dec.10,
16:10
[Reply (3 of 4) to:
'please help me for find user manual siemens avento'
started by: 'reza beigi'
on Tue. 6 Jul.10]
 Category:
Devices, Scanner, Machines
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| please help me for find user manual siemens avento |
i agree, that you should try to contact siemens directly. if they cannot help you i have an extra copy that i might be able to sent you for a small fee. based on my experience,the manuals really are NOT much help as, performing the required actions needed to complete scans are not fully outlined in the manuals, that usally comes from applications training from the manufacturer. it sounds like you purchased a used system with no applications support. siemens systems are fantastic mri scanners. but you are going to need applications help. i can offer assistance in this area if you would like . i am a chief mri technologist here in ny, and have 23 years mri scanning experience.i have 5 years siemens avanto expertise, performing body, msk, neuro, angio and breast mri and biopsy experience. you can contact me at my email mcl1956m@aol.com
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|  View the whole thread | | |
Don LaVille
Tue. 21 Dec.10,
20:57
[Reply (1 of 3) to:
'Muscle shading in 3T Images'
started by: 'Travis Conley'
on Thu. 21 Oct.10]
Category:
Applications and Examinations
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| Muscle shading in 3T Images |
This artifact is known as the dielectric effect. It is a phenomena to all magnets. At 1.5T the dielectric effect is at 60cm so when we scan at a FOV of 40 or less we don't see it. At 3t the dielectric effect is reduced to 30cm so we now see it when using a FOV of 30 or more. There is no way to get rid of it that I know of and you will see an increase with patients with more magnetic suseptibility (ie. patients with ascities, and pregnant patient). You could try using Surface Coil Intensity Correction (SCIC) and it will help to even out the extreme dark and light in your image. Some vendors will suggest using a Fat Sat pad to help reduce this artifact. I have tried it with little success.
Looking at your image, it looks like you were scanning on a GE 3T HDX. I hope that the vendors will have a fix for this artifact soon. For right now though we are just dealing with it. I hope this helps.
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| | View the whole thread | | |
Mitchell Sapp
Mon. 6 Dec.10,
18:14
[Reply (2 of 4) to:
'Where to get MR physicist?'
started by: 'Mitchell Sapp'
on Thu. 4 Nov.10]
Category:
Jobs
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| Where to get MR physicist? |
Well, if it isn't the woman who trained me all those many years ago!!! Thanks Becky! Send me an email, please. I would love to catch up with you. mksmri@yahoo.com
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| | View the whole thread | | |
Steven Ford
Thu. 2 Dec.10,
15:18
[Reply (1 of 2) to:
'T1&T2 WAIGHTED MEANING ?'
started by: 'BINU VAEGHESE'
on Wed. 1 Dec.10]
Category:
Basics and Physics
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| T1&T2 WAIGHTED MEANING ? |
All MRI images have contrast (the bright and the dark) that is based on properties of the tissue that's being imaged. In MRI (unlike, for example, CT) those images are based on a combination of several physical properties. So to some extent ALL MRI images are based partly on property A, property B, etc.
The tissue properties that are referred to include proton density (how many hydrogen nuclei are in a given area), motion, and two other properties that are called T1 and T2. These are properties that can be seen onloy by using the MRI instrument, much as without a microscope one cannot see inside a cell.
A T1 weighted image is one in which the differences between T1 properties of the various tissues are the predominant reason why some parts of the image are bright and others are not as bright.
This is medically useful because, since T1 and T2 are distinct properties, diseased tissue may show up different than normal tissue on either the T1 weighted scan or the T2.
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| | View the whole thread | | |
Rebecca Pitchford-Bell
Tue. 30 Nov.10,
16:19
[Reply (1 of 4) to:
'Where to get MR physicist?'
started by: 'Mitchell Sapp'
on Thu. 4 Nov.10]
Category:
Jobs
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| Where to get MR physicist? |
It's been a long time. Suggest you contact ACR for possible list but they probably won't recommend one per se, but should have a list of companies you can contact. Have Hitachi rep.or contrast rep give you a list of other sites with your equipment to contact to see who they used. Good Luck
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