{
  "ptid_time": "116_S_0834_2008-10-17",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0834/2008-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 71,425 mm³, 137.9% above the reference mean. With a Z-score of 3.28 (99.9th percentile), this represents profound enlargement; hippocampal volume measures 6,223 mm³, 22.5% below the reference mean. With a Z-score of -2.25 (1.2th percentile), this represents significant atrophy; whole brain volume measures 1,104,740 mm³, 2.6% below the reference mean. With a Z-score of -0.37 (35.5th percentile), this represents normal volume ; entorhinal cortex volume measures 2,442 mm³, 42.7% below the reference mean. With a Z-score of -2.96 (0.2th percentile), this represents significant atrophy; fusiform gyrus volume measures 17,071 mm³, 14.3% below the reference mean. With a Z-score of -1.19 (11.8th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,315 mm³, 22.7% below the reference mean. With a Z-score of -1.87 (3.1th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 65.9 years. Gender is Male. Education: 13 years. MMSE: 23.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The data shows profound ventricular enlargement and significant atrophy in the hippocampus and entorhinal cortex, which are hallmark indicators of Alzheimer's disease. The MMSE score of 23.0 suggests mild cognitive impairment, and the presence of one APOE4 allele increases the risk for Alzheimer's.  \nDiagnosis: Dementia (likely Alzheimer's disease)  \nConfidence: High",
  "timestamp": "2025-07-26T11:59:05.374245"
}