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| Result: Searchterm 'brain imaging'
found in 4 messages |
| Result Pages: [1] |
More Results:  Database (1) News Service (254) Resources (26) |
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Mandie Smith
Wed. 22 Aug.12,
15:07
[Start of:
'MRI Markers for Brain imaging'
1 Reply]
 Category:
Applications and Examinations
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| MRI Markers for Brain imaging |
Does anyone use MRI markers in which the hair does not have to be shaved to attach the marker for MRI imaging of the brain? We will be scanning adolescents and do not want to shave their hair for marker placement. We thought vitamin E capsules but don't know how to "glue" it to the scalp in the precise location without shaving the hair. Also we don't want the glue to dissolve the capsule. The marker only needs to stay attached for MRI scan and then can be removed. Thank you!
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Reader Mail
Wed. 12 Dec.07,
10:07
[Reply (1 of 2) to:
'double ir physic'
started by: 'soontorn siriserussa'
on Sun. 2 Dec.07]
Category:
Sequences and Imaging Parameters
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| double ir physic |
Different types of double inversion recovery (DIR, 2IR) sequences are used to improve the suppression of blood signal (black blood technique) or to null the signals from two different tissue types (e.g. white matter and cerebrospinal fluid).
The black blood technique (used in cardiovascular MRI) works with two inversion pulses, where the first pulse is nonselective and the second pulse is slice-selective. TI is set to a value at which the signal of the recovering inverted blood is zero (http://www.mr-tip.com/serv1.php?type=db1&dbs=Double%20Inversion).
The second technique (also named gray matter only) is used in brain imaging to improve the detection of lesions, for example in the diagnostic of multiple sclerosis. Two 180° pulses with different TI are used to suppress two different types of tissue simultaneously.
Hope this helps
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Reader Mail
Wed. 26 Jul.06,
11:56
[Reply (1 of 2) to:
'vibe sequences in neuro mri?'
started by: 'syam reddy'
on Wed. 25 Jan.06]
Category:
Sequences and Imaging Parameters
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| vibe sequences in neuro mri? |
Vibe is a breathhold technique, so mor suitable for abdomen imaging.
mprage goes very well for post contrast brain imaging
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Tomas Randell
Mon. 20 Jun.05,
19:38
[Reply (1 of 3) to:
'Metalic particles into the cornea'
started by: 'Jorge Cazal'
on Mon. 13 Jun.05]
Category:
Safety
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| Metalic particles into the cornea |
For my personal opinion, it is not to expect that these microscopic steel particles are a contraindication for an MRI of the head. An injury of the patient by dislocation or
torque presents not a real risk because of the small size.
The possibility of heating is minimal and can be additional lowered by reducing the SAR. Artifacts may reduce the image quality a little, but diagnostic brain imaging is certainly possible. The use of a mid or low field MRI machine will also reduce any risks.
Hope this will help.
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