Examples of Specific Causes Identified for AI Tool Failure (IMAGE)
Caption
Axial images at L1 level, without (left) and with (right) segmentation overlay. Red indicates skeletal muscle, green indicates trabecular bone, yellow indicates visceral fat, and blue indicates subcutaneous fat. Segmented regions also include liver (beige) and spleen (orange), which were not evaluated as part of present analysis. (A) 78-year-old woman who underwent abdominopelvic CT at outside institution. Bone tool returned L1 vertebral body bone attenuation of -146 HU, outside of reference range. Thus, tool was deemed technical failure for bone tool. Failure was attributed to volume averaging of vacuum phenomenon within slice. (B) 64-year-old woman who underwent abdominopelvic CT at outside institution. Bone tool returned vertebral body bone attenuation of -10,000 HU (default value for segmentation failure detected by tool), outside of reference range. Thus, tool was deemed technical failure for bone tool. Failure was attributed to presence of spinal fusion hardware.
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ARRS/AJR
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ARRS/AJR
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