{
  "ptid_time": "941_S_4764_2013-06-10",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4764/2013-06-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 63,835 mm³, 72.7% above the reference mean. With a Z-score of 1.96 (97.5th percentile), this represents moderate enlargement; hippocampal volume measures 6,076 mm³, 6.5% below the reference mean. With a Z-score of -0.52 (30.3th percentile), this represents normal volume ; whole brain volume measures 922,903 mm³, 0.6% below the reference mean. With a Z-score of -0.07 (47.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,846 mm³, 11.1% above the reference mean. With a Z-score of 0.60 (72.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,543 mm³, 8.9% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,100 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.4th percentile), this represents normal volume . ",
  "text_data": "Age is 83.7 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (72.7% above mean, Z-score 1.96), which can indicate atrophy, but hippocampal volume is normal (Z-score -0.52). Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement could suggest early changes, but cognitive performance is strong and other volumes are normal)",
  "timestamp": "2025-07-26T17:42:59.540382"
}