{
  "ptid_time": "130_S_4984_2013-01-04",
  "img_path": "/data/qiuhui/data/adni/images/130_S_4984/2013-01-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,372 mm³, 68.8% above the reference mean. With a Z-score of 1.57 (94.2th percentile), this represents moderate enlargement; hippocampal volume measures 5,711 mm³, 19.7% below the reference mean. With a Z-score of -1.81 (3.5th percentile), this represents moderate atrophy; whole brain volume measures 913,527 mm³, 6.3% below the reference mean. With a Z-score of -0.79 (21.5th percentile), this represents normal volume ; entorhinal cortex volume measures 1,946 mm³, 47.0% below the reference mean. With a Z-score of -2.89 (0.2th percentile), this represents significant atrophy; fusiform gyrus volume measures 12,425 mm³, 27.0% below the reference mean. With a Z-score of -2.45 (0.7th percentile), this represents significant atrophy; middle temporal gyrus volume measures 13,181 mm³, 31.2% below the reference mean. With a Z-score of -2.71 (0.3th percentile), this represents significant atrophy. ",
  "text_data": "Age is 73.6 years. Gender is Female. Education: 12 years. MMSE: 15.0. MoCA: 9.0. APOEε4 alleles: 1.0. ",
  "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 moderate ventricular enlargement. The cognitive scores (MMSE 15, MoCA 9) are severely impaired, consistent with dementia. APOE4 positivity further supports Alzheimer's pathology.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T14:55:02.610043"
}