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abdul halim ahmad

Wed. 31 Jan.07,
14:40

[Reply (4 of 6) to:
'Examinations of children'
started by: 'George'
on Sat. 22 Nov.03]

 
  Category: 
Applications and Examinations
 
Examinations of children
always smile to children can be extra bonus for child to enter the mri room
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ergun ahunbay

Tue. 2 Jan.07,
19:20

[Start of:
'Geometric distortion'
2 Replies]

 
  Category: 
Artifacts
 
Geometric distortion
Dear Listers,

I have some questions about the image distortions in MRI:

1) Are the magnetic field inhomogeneities the only cause of image distortions? Does RF-inhomogeneities cause distortions or just signal inaccuracies?

2) Is it accurate to say that a spiral sequence would not have distortion due to magnetic field inhomogeneity(, but it would have blurring). Would there be image geometric distortions with a spiral imaging?

thank you very much in advance
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Steven Smith

Wed. 20 Dec.06,
22:46

[Start of:
'scan matrices and steps'
2 Replies]

 
  Category: 
General
 
scan matrices and steps
Hello,
I've just joined this forum because I'm a Japanese-English translator and often translate MRI related material, but my knowledge is a bit patchy. I have a rather basic question. Part of a product specification goes (translated):
Scan Matrix: 64 – 1024 x 64 – 1024; 4 steps per

I assume this is 4 steps per scan, but wanted to check just in case. Also could anyone explain what is meant by steps in this context?

Thanks very much

Steven Smith
www.fwtranslations.co.uk
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jedrzej kosiuk

Wed. 20 Dec.06,
15:51

[Start of:
'SPIO in vivo tracing of stem cells in humans'
1 Reply]

 
  Category: 
Contrast Agents
 
SPIO in vivo tracing of stem cells in humans
I am planning clinical trial with autologous stem cell implantation by patients in end stage PAD (Rutherford category IV and V). I would like to label the bone marrow stem cells to be able to trace them with MRI. Anybody knows some reasonable solutions or helpful literature?
please email me: jedrzej.kosiuk@meduniwien.ac.at
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marleen michels

Wed. 22 Nov.06,
14:59

[Start of:
'visualizing corticospinal tracts'
2 Replies]

 
  Category: 
Applications and Examinations
 
visualizing corticospinal tracts
I' m a student master of medical imaging, and I was wondering which MRI technics are used to visualise the corticospinal tracts? Diffusion tensor imaging is one of them, I think...
kind regards
marleen michels, kuleuven.
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