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bob mitchell

Sun. 5 Dec.04,
20:54

[Start of:
'CE MRA of the Liver'
3 Replies]

 
  Category: 
Applications and Examinations
 
CE MRA of the Liver
Which injection rate and amount of Gadolinium works best for CE MRA of the liver with a good portal venous contrast? We have a power injector and a 1.5 T system. With a flow rate of 3 ml/sec and 20 ml contrast agent the arterial contrast but the portal phase could be better. Our MRA's are done with 15 sec. scan time for one breath hold.
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MengChe LOOI

Sat. 13 Nov.04,
03:48

[Reply (1 of 2) to:
'Temperature Monitoring'
started by: 'Schmidt Marga'
on Sun. 6 Jun.04]

 
  Category: 
Equipment
 
Temperature Monitoring
The ideal solution for temperature monitoring during MRI is by using a fibre optic temperature monitoring system.

Fibre optic has inherent distinctive advantages as they are intrinsically safe, 100% immunity to EMI and RFI hence, the temperature reading is reliable.

They are a few manufacturers for this type of system with varying price range but one thing to note is to find out if the system is suitable for human physiological use. Most systems have not gained FDA or other regulations approvals for clinical use.

System and sensor accuracy, repeatability and packaging are also important factors to keep note of.
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Susan Angelico

Tue. 26 Oct.04,
00:24

[Reply (1 of 6) to:
'Brain Protocol'
started by: 'Oscar Cidri'
on Tue. 7 Sep.04]

 
  Category: 
Protocols
 
Brain Protocol
Hi Oscar,
depending of the indication (tumor, stroke, haemorrhage, epilepsy, inflammation, malformation....) different sequences are useful for brain MRI.
A protocol for a wide range of indications: sagittal T2, coronal Flair, transversal DWI and transversal T1 without and with contrast medium. In case of a result a second plane of a T1 sequence after contrast e.g. coronal is recommended.
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andrew glenn

Fri. 8 Oct.04,
21:42

[Reply (1 of 2) to:
'Power Injector'
started by: 'Don Monterez'
on Mon. 27 Sep.04]

 
  Category: 
Equipment
 
Power Injector
we have had great success with a Medrad Spectris power injector - peripheral angios can be done using 20mls gad at flow rate of 1ml/sec without venous return.(siemens symphony magnetom 1.5T)
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houman abrishamkar

Tue. 5 Oct.04,
07:35

[Start of:
'E-Field intensity inside MRI???'
0 Reply]

 
  Category: 
Basics and Physics
 
E-Field intensity inside MRI???
hi,
i need to know the magnitude of the electric field intensity inside an MRI machine at 1.5T and 3.0T.
thank you in advance.
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