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| Result: Searchterm 'tr'
found in 420 messages |
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Emil Cohen
Sat. 19 Mar.05,
01:03
[Reply (3 of 4) to:
'CE MRA of the Liver'
started by: 'bob mitchell'
on Sun. 5 Dec.04]
 Category:
Applications and Examinations
|
| CE MRA of the Liver |
The above statements are correct, also remember that the portal vein is brightest in the first pass of contrast through it so having a short sequence for the arterial phase <20 seconds and going straight into the portal phase is important(ie one inspiration/expiration only between repeating the sequence). The portal vein will become brightest within 30 seconds of the artery.
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Pooja Jalikop
Wed. 9 Mar.05,
15:02
[Start of:
'Perfusion analysis'
2 Replies]
Category:
Sequences and Imaging Parameters
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| Perfusion analysis |
Hi,
I am Pooja from Manipal,India. I am doing MS in Medical Software. I'm currently doing a project on Perfusion analysis for stroke calculation. If anyone knows any sites to refer or has any data/material for this topic please let me know.
Regards
Pooja
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salah almahal
Tue. 1 Feb.05,
21:55
[Reply (2 of 6) to:
'Brain Protocol'
started by: 'Oscar Cidri'
on Tue. 7 Sep.04]
Category:
Protocols
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| Brain Protocol |
hi Oscar,
T2,FLAIR LONG TR and T1-------- TRANSVERSE.
FLAIR ,T1 --------------- SAGITTAL.
DWSSH.
3D ANGIO.
This for routine brain ,although the protocol depend on the clinical diagnosis.
is it for ms,infarction,pitutary abnormalities,orbit abnormalities,ect.....
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Tomas Randell
Thu. 16 Dec.04,
05:03
[Reply (2 of 4) to:
'CE MRA of the Liver'
started by: 'bob mitchell'
on Sun. 5 Dec.04]
Category:
Applications and Examinations
|
| CE MRA of the Liver |
Like lily lily we use a muliphase MRA with 3 phases (artery, portal vein and late phase).
We use an amount of 30 ml Gadolinium with an injection rate of 5 ml/sec. With this high flow rate, you get a more concentrated bolus and therefore a higher contrast for the second phase. We use CENTRA k-space acquisition and reduce the scan time with SENSE (a parallel imaging technique like ASSET ), this will help for a better timing.
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lily lily
Wed. 8 Dec.04,
23:23
[Reply (1 of 4) to:
'CE MRA of the Liver'
started by: 'bob mitchell'
on Sun. 5 Dec.04]
Category:
Applications and Examinations
|
| CE MRA of the Liver |
Dear bob mitchell:
The injction rate and amount of C.M. of liver MRA on our experience, that are the same yours. And that can got the very will artery phase around 15sec(using smart prep. to track or fluoro-trigger to mointor and catch the C.M. arrival time ) after injection C.M. Another item about the portal vein you can settle multi-phase on option menu. After artery phase then take rest to breath and BH again(about 3-5sec) then do the second phase(portal vein phase).
you can try the way.
ps: you can try to performance it combinate ASSET, it will reduction the scan time and improve the tempory resoultion.
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