{
  "ptid_time": "051_S_1072_2007-12-12",
  "img_path": "/data/qiuhui/data/adni/images/051_S_1072/2007-12-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,548 mm³, 43.8% below the reference mean. With a Z-score of -1.10 (13.6th percentile), this represents mild atrophy; hippocampal volume measures 8,702 mm³, 13.2% above the reference mean. With a Z-score of 1.49 (93.1th percentile), this represents mild enlargement; whole brain volume measures 1,081,370 mm³, 5.1% above the reference mean. With a Z-score of 0.63 (73.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,946 mm³, 1.4% above the reference mean. With a Z-score of 0.11 (54.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,766 mm³, 8.5% above the reference mean. With a Z-score of 0.96 (83.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,631 mm³, 15.2% above the reference mean. With a Z-score of 1.35 (91.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 60.8 years. Gender is Female. Education: 13 years. MMSE: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal or even slightly enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). The MMSE score of 28 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant structural or cognitive deficits are evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:31:45.462506"
}