{
  "ptid_time": "032_S_4386_2012-06-07",
  "img_path": "/data/qiuhui/data/adni/images/032_S_4386/2012-06-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,713 mm³, 41.3% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; hippocampal volume measures 6,421 mm³, 1.1% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; whole brain volume measures 962,235 mm³, 3.7% above the reference mean. With a Z-score of 0.44 (67.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,991 mm³, 15.3% above the reference mean. With a Z-score of 0.82 (79.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,193 mm³, 12.9% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,203 mm³, 17.6% above the reference mean. With a Z-score of 1.57 (94.1th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 85.2 years. Gender is Female. Education: 16 years. MMSE: 27.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or even enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 27, MoCA 26) are within normal limits for age, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:04:39.238745"
}