{
  "ptid_time": "022_S_5004_2017-03-21",
  "img_path": "/data/qiuhui/data/adni/images/022_S_5004/2017-03-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,586 mm³, 18.5% above the reference mean. With a Z-score of 0.44 (67.0th percentile), this represents normal volume ; hippocampal volume measures 8,446 mm³, 5.2% above the reference mean. With a Z-score of 0.52 (69.9th percentile), this represents normal volume ; whole brain volume measures 1,167,870 mm³, 2.9% above the reference mean. With a Z-score of 0.42 (66.1th percentile), this represents normal volume ; entorhinal cortex volume measures 5,259 mm³, 23.4% above the reference mean. With a Z-score of 1.62 (94.7th percentile), this represents moderate enlargement; fusiform gyrus volume measures 21,632 mm³, 8.7% above the reference mean. With a Z-score of 0.72 (76.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,329 mm³, 13.8% below the reference mean. With a Z-score of -1.13 (12.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 69.1 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mostly normal measurements, with mild atrophy in the middle temporal gyrus but no significant hippocampal or whole-brain atrophy. Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and amyloid PET (AV45) is normal. The absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:23:05.725123"
}