GE Healthcare · MRSigna

Gradcal Tool Recommends a Drastic Change for Z-axis, and if Accepted, Images Look "Squashed"

Symptom

Gradcal Tool Recommends a Drastic Change for Z-axis, and if Accepted, Images Look "Squashed" The InHouse engineer reports a problem occurring at two of his sites, each is an LX, one running 8.3 and one running 9.1 software. At each site, he is scanning the DQA-III in the Head coil, and using the DQA calibration tool to analyze the images and calculate gradcal. At each site, the X & Y axes converge properly, but the Z-axis is reported to be 143mm and recommends a drastic change. But he manually measures 100mm. If the change is followed, the images look "squashed". What's wrong? The InHouse engineer reports a problem occurring at two of his sites, each is an LX, one running 8.3 and one running 9.1 software. At each site, he is scanning the DQA-III in the Head coil, and using the DQA calibration tool to analyze the images and calculate gradcal. At each site, the X & Y axes converge properly, but the Z-axis is reported to be 143mm and recommends a drastic change. But he manually measures 100mm. If the change is followed, the images look "squashed". What's wrong?

Applies to

Models
Signa
Product
Signa LX Signa LX Product can be used with 8.x and 9.x systems.
Software
8.3 8.3
Area
MR

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