{
  "ptid_time": "027_S_0850_2007-03-26",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0850/2007-03-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,829 mm³, 25.2% below the reference mean. With a Z-score of -0.60 (27.3th percentile), this represents normal volume ; hippocampal volume measures 5,183 mm³, 31.4% below the reference mean. With a Z-score of -3.07 (0.1th percentile), this represents profound atrophy; whole brain volume measures 955,985 mm³, 11.4% below the reference mean. With a Z-score of -1.48 (6.9th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,047 mm³, 50.1% below the reference mean. With a Z-score of -3.40 (0.0th percentile), this represents profound atrophy; fusiform gyrus volume measures 16,600 mm³, 11.9% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 15,250 mm³, 28.5% below the reference mean. With a Z-score of -2.57 (0.5th percentile), this represents significant atrophy. ",
  "text_data": "Age is 78.6 years. Gender is Male. Education: 16 years. MMSE: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The patient shows profound atrophy in the hippocampus and entorhinal cortex, which are key regions affected in Alzheimer's disease (AD). The MMSE score of 21 indicates cognitive impairment, and the presence of one APOE4 allele further increases AD risk.  \nDiagnosis: Dementia (likely Alzheimer’s disease)  \nConfidence: High",
  "timestamp": "2025-07-26T03:43:35.384167"
}