{
  "ptid_time": "128_S_0500_2006-05-15",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0500/2006-05-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 63,605 mm³, 65.1% above the reference mean. With a Z-score of 1.56 (94.1th percentile), this represents moderate enlargement; hippocampal volume measures 8,749 mm³, 15.7% above the reference mean. With a Z-score of 1.54 (93.8th percentile), this represents moderate enlargement; whole brain volume measures 1,158,610 mm³, 7.3% above the reference mean. With a Z-score of 0.95 (83.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,356 mm³, 6.2% above the reference mean. With a Z-score of 0.42 (66.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,582 mm³, 6.7% below the reference mean. With a Z-score of -0.57 (28.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,136 mm³, 17.8% above the reference mean. With a Z-score of 1.60 (94.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 77.4 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Endocrine-Metabolic; Renal-Genitourinary; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows moderate enlargement (Z-score 1.56), which can indicate atrophy, but hippocampal volume is also moderately enlarged (Z-score 1.54), which is atypical for Alzheimer's. The MMSE score of 29 is within the normal range, and APOE4 is negative, reducing Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting volumetric findings despite normal cognition)",
  "timestamp": "2025-07-26T13:45:12.623057"
}