{
  "ptid_time": "036_S_0760_2007-04-11",
  "img_path": "/data/qiuhui/data/adni/images/036_S_0760/2007-04-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,440 mm³, 107.9% above the reference mean. With a Z-score of 2.70 (99.7th percentile), this represents significant enlargement; hippocampal volume measures 5,205 mm³, 32.3% below the reference mean. With a Z-score of -3.62 (0.0th percentile), this represents profound atrophy; whole brain volume measures 921,097 mm³, 10.5% below the reference mean. With a Z-score of -1.31 (9.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,210 mm³, 43.2% below the reference mean. With a Z-score of -3.35 (0.0th percentile), this represents profound atrophy; fusiform gyrus volume measures 13,581 mm³, 25.4% below the reference mean. With a Z-score of -2.86 (0.2th percentile), this represents significant atrophy; middle temporal gyrus volume measures 17,518 mm³, 14.6% below the reference mean. With a Z-score of -1.30 (9.7th percentile), this represents mild atrophy. ",
  "text_data": "Age is 69.9 years. Gender is Female. Education: 12 years. MMSE: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows profound atrophy in the hippocampus and entorhinal cortex, along with significant ventricular enlargement—all hallmark features of Alzheimer's disease. The MMSE score of 17 indicates severe cognitive impairment, consistent with dementia.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:05:04.574790"
}