Questionnaire Name: Coils Questionnaire# 2 Questionnaire ID: C1
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Primary Support Function (Modality) MR CT Nuclear Ultra Sound X-Ray Multi-modality Other
Service experience in MR: Less than 1 year 1-3 years 4-6 Years 7-10 Years 10-15 Years Over 15 years
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Question
1.
Your customer shows you an image produced with the CTL BOT multicoil. There is a noticeable loss of signal at the very bottom of the image, within the field of view. The first step taken to resolve this problem would be to replace a preamp.
2.
The Phased Array, CTL multicoil has 4 coils, which allows for selection of the top two coils the middle two coils and the bottom two coils.
3.
The typical Signa system has 4 types of coil configurations for patient imaging. Body, Head, Surface, Phased Array.
4.
You are troubleshooting a RF problem and are trying to determined if the problem is in the receive chain. You could swap the BODY hybrid splitter with the HEAD hybrid splitter to determine if it is operating.
5.
The Head Coil on a Signa LX system is considered a quad coil. This is for the body coil (BRM/CRM) as well.
6.
Before doing a body scan you must completely remove the head coil from the magnet bore. Failure to do so will result in the destruction of the Head coil.
7.
On a Signa LX system you can perform CTL SNR on a phased array coil by accessing the test off of the Tools Menu.
8.
9.
You can swap the Body preamp with any Multicoil preamp on a 1.0T system to isolate receive problems.
10.
On the CTL TOP configuration, coils 1 and 6 are turned off.
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