{
  "ptid_time": "123_S_0106_2012-01-25",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0106/2012-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 62,117 mm³, 121.3% above the reference mean. With a Z-score of 2.78 (99.7th percentile), this represents significant enlargement; hippocampal volume measures 6,545 mm³, 8.0% below the reference mean. With a Z-score of -0.73 (23.1th percentile), this represents normal volume ; whole brain volume measures 1,094,350 mm³, 12.3% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,949 mm³, 7.5% above the reference mean. With a Z-score of 0.46 (67.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,383 mm³, 3.7% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,714 mm³, 2.8% above the reference mean. With a Z-score of 0.25 (59.7th percentile), this represents normal volume . ",
  "text_data": "Age is 79.2 years. Gender is Female. Education: 15 years. MMSE: 29.0. MoCA: 22.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.78) and moderate whole brain enlargement (Z-score 1.55), which could suggest atrophy, but hippocampal volume is only slightly below average (Z-score -0.73) and other regions are normal. The MMSE is high (29/30), but the MoCA (22/30) suggests mild cognitive impairment (MCI), with no APOE4 risk allele.  \n\n**Diagnosis:** **MCI** (mild cognitive impairment)  \n**Confidence:** **Medium** (ventricular enlargement and MoCA support MCI, but preserved hippocampal volume and high MMSE reduce certainty)",
  "timestamp": "2025-07-26T12:23:57.894149"
}