{
  "ptid_time": "100_S_4512_2012-11-06",
  "img_path": "/data/qiuhui/data/adni/images/100_S_4512/2012-11-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,443 mm³, 44.3% below the reference mean. With a Z-score of -1.11 (13.4th percentile), this represents mild atrophy; hippocampal volume measures 7,006 mm³, 8.8% below the reference mean. With a Z-score of -0.99 (16.1th percentile), this represents normal volume ; whole brain volume measures 963,396 mm³, 6.4% below the reference mean. With a Z-score of -0.80 (21.3th percentile), this represents normal volume . ",
  "text_data": "Age is 68.5 years. Gender is Female. Education: 16 years. MMSE: 28.0. MoCA: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging shows mild ventricular enlargement but normal hippocampal and whole brain volumes, suggesting minimal structural changes. Cognitive scores (MMSE 28, MoCA 29) are intact, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:25:16.950050"
}