{
  "ptid_time": "019_S_5019_2013-05-14",
  "img_path": "/data/qiuhui/data/adni/images/019_S_5019/2013-05-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,286 mm³, 44.5% above the reference mean. With a Z-score of 1.11 (86.8th percentile), this represents mild enlargement; hippocampal volume measures 6,646 mm³, 13.5% below the reference mean. With a Z-score of -1.52 (6.5th percentile), this represents moderate atrophy; whole brain volume measures 918,811 mm³, 10.7% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,506 mm³, 35.6% below the reference mean. With a Z-score of -2.76 (0.3th percentile), this represents significant atrophy; fusiform gyrus volume measures 10,607 mm³, 41.8% below the reference mean. With a Z-score of -4.70 (0.0th percentile), this represents profound atrophy; middle temporal gyrus volume measures 14,033 mm³, 31.6% below the reference mean. With a Z-score of -2.81 (0.2th percentile), this represents significant atrophy. ",
  "text_data": "Age is 63.4 years. Gender is Female. Education: 12 years. MMSE: 20.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows significant atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus), alongside mild whole-brain atrophy and ventricular enlargement. The MMSE score of 20 indicates cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T01:09:28.437744"
}