{
  "ptid_time": "014_S_0658_2008-04-08",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0658/2008-04-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,880 mm³, 6.1% above the reference mean. With a Z-score of 0.15 (55.8th percentile), this represents normal volume ; hippocampal volume measures 6,431 mm³, 14.9% below the reference mean. With a Z-score of -1.46 (7.3th percentile), this represents mild atrophy; whole brain volume measures 1,035,330 mm³, 4.1% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,867 mm³, 18.7% above the reference mean. With a Z-score of 1.27 (89.8th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,539 mm³, 9.0% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,771 mm³, 12.0% below the reference mean. With a Z-score of -1.08 (14.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 73.6 years. Gender is Male. Education: 18 years. MMSE: 28.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows mild atrophy (Z-score -1.46, 7.3th percentile), which is a key biomarker for Alzheimer's disease, while other regions are mostly normal or mildly enlarged. The MMSE score of 28 is within the normal range, suggesting no significant cognitive impairment clinically. The absence of APOE4 reduces genetic risk but does not rule out neurodegeneration.  \nDiagnosis: Mild Cognitive Impairment (MCI)  \nConfidence: Medium",
  "timestamp": "2025-07-25T23:46:25.146945"
}