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| Result: Searchterm 'MRI'
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Steven Ford
Mon. 7 Mar.11,
15:24
[Reply (4 of 8) to:
'6-1.5T MAGNETS, DIFFERING GRADIENTS'
started by: 'Elise Gough'
on Wed. 23 Feb.11]
 Category:
Applications and Examinations
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| 6-1.5T MAGNETS, DIFFERING GRADIENTS |
If some of the system are signal starved, it's most likely not due to gradient field strength and speed, but it can be related to that. Like everything else in MRI, it's complex and interdependent.
You're best advised to talk with the apps specialist from the systems that are under-performing, and learn from them what the bandwidth is, and also check the shim. Is the fat suppression OK, but the signal weak, or is the suppression bad also? Do you get a graphic output of the linear (gradient)shim corrrection on the various systems?
It is well worth the money that they might charge, if it comes to that, in order to optimize the use of the systems and for your own education. If the apps person does not know why the other machine works so well, there should be someone higher up in the organization who can shed some light on your question.
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|  View the whole thread | | |
Robert Patten
Sat. 5 Mar.11,
14:47
[Reply (1 of 5) to:
'Building 3d Volumes from MRI DICOM'
started by: 'Robert Patten'
on Thu. 3 Mar.11]
Category:
General
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| Building 3d Volumes from MRI DICOM |
Can someone tell me what kind of luck they have had rendering MRIs to 3D. And if there are problems what do you have to do (like no gaps between slices) to get a good quality picture.
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| | View the whole thread | | |
Steven Ford
Thu. 3 Mar.11,
20:28
[Reply (1 of 8) to:
'6-1.5T MAGNETS, DIFFERING GRADIENTS'
started by: 'Elise Gough'
on Wed. 23 Feb.11]
Category:
Applications and Examinations
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| 6-1.5T MAGNETS, DIFFERING GRADIENTS |
I assume that you mean a t2 fat suppressed sequence. Differing gradient strengths have only an indirect effect on these images. The fat saturation sequences require additional pulses which take time to execute; stronger gradient systems can execute these pulses faster.
If you see different results, it can be caused by a number of factors; if you can describe the differences, that would be helpful. Generally speaking, the quality of the magnet homogeneity makes a big difference. If the small FOV scans (wrist) look different from magnet to magnet, that's probably not the cause.
You should ask your MRI applications specialist about this, and pay attention to the TE and bandwidth. Are the FOV and number of steps the same?
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Shauna Smith
Wed. 5 Jan.11,
17:39
[Reply (1 of 2) to:
'imaging education association'
started by: 'cherry pie'
on Tue. 26 Oct.10]
Category:
General
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| imaging education association |
I don't know if you are still interested in purchasing imaginged, but I just wanted to share my experience. I just passed my MRI boards and I prepared for it by reading MRI in Practice and viewing the imagingeded videos. They really complimented each other. The book is very thorough and technical and the videos put it all into everyday language. For me it was helpful to have someone explain many of the concepts. Candi is a great teacher and made it easy to understand...well almost easy..it is MRI afterall! Hope this helps:)
CaliMRI
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| | View the whole thread | | |
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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