Loss of Signal or Shading in Spine Images due to the Coil.
Symptom
MRIQ Loss of Signal or Shading in Spine Images See Long Description Note: In the example shown below, the 8 Channel CTL coil is referenced, but it should be realized that the same problem could have occurred at another site with the 4 Channel CTL coil. The FE had installed this coil the day before, and it was working fine at that time. In fact, it had passed the 8 Channel USAI CTL Array Quality Assurance Test at that time without a problem. But today the customer is complaining about loss of signal or shading in the anterior portion of the 8CTL123 axial images. See below for an example of the problem from the site.
Error message
2224709 Low signal detected. Please check the signal level for receiver x or receiver x+1 while using Manual Prescan. Error: 2224709 Host: NMI_Langhorn Process: NSP File: TPS:aps_frame_range_check Line: 10 Low signal detected. Please check the signal level for receiver 1 (or receiver 2 while using Manual Prescan). Note that for 3 coil scans, one coil will cause a low signal detected message to occur. Error: 2224709 Host: NMI_Langhorn Process: NSP File: TPS:aps_frame_range_check Line: 10 Low signal detected. Please check the signal level for receiver X (or receiver (X + 1) while using Manual Prescan). Note that for 3 coil scans, one coil will cause a low signal detected message to occur.
Applies to
- Models
- Signa
- Product
- Signa LX Signa LX Product can be used with 8.x and 9.x systems.
- Software
- 9.1 For Signa LX product only
- Component
- 2225545-6 USAI PREMIER 7000 PHASED ARRAY CTL SPINE COIL. M1087SP No special tuning is required after replacing the Adapter Block 2225545-9 of the M1087SP USAI PREMIER 7000 PHASED ARRAY CTL SPINE COIL 2225545-6.
- Area
- MR
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