{
  "ptid_time": "037_S_6083_2019-12-18",
  "img_path": "/data/qiuhui/data/adni/images/037_S_6083/2019-12-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 72,861 mm³, 89.2% above the reference mean. With a Z-score of 2.14 (98.4th percentile), this represents significant enlargement; hippocampal volume measures 7,645 mm³, 1.1% above the reference mean. With a Z-score of 0.11 (54.4th percentile), this represents normal volume ; whole brain volume measures 1,180,760 mm³, 9.4% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,581 mm³, 11.7% above the reference mean. With a Z-score of 0.79 (78.7th percentile), this represents normal volume ; fusiform gyrus volume measures 23,230 mm³, 23.3% above the reference mean. With a Z-score of 1.99 (97.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 23,750 mm³, 11.3% above the reference mean. With a Z-score of 1.02 (84.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.1 years. Gender is Male. Education: 12 years. MMSE: 26.0. MoCA: 21.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.14) and mild-to-moderate enlargement in other regions (fusiform gyrus, middle temporal gyrus), while hippocampal and entorhinal cortex volumes are normal. The MMSE (26) is borderline, and the MoCA (21) suggests mild cognitive impairment. The absence of APOE4 reduces Alzheimer's genetic risk but does not rule out other causes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Structural changes and cognitive scores suggest MCI, but further clinical correlation is needed to exclude other neurodegenerative or vascular causes.)",
  "timestamp": "2025-07-26T06:53:21.191487"
}