{
  "ptid_time": "072_S_4871_2014-08-12",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4871/2014-08-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,754 mm³, 78.0% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement; hippocampal volume measures 7,041 mm³, 8.4% below the reference mean. With a Z-score of -0.94 (17.4th percentile), this represents normal volume ; whole brain volume measures 974,963 mm³, 5.3% below the reference mean. With a Z-score of -0.66 (25.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,933 mm³, 1.0% above the reference mean. With a Z-score of 0.08 (53.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,544 mm³, 7.3% above the reference mean. With a Z-score of 0.82 (79.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,894 mm³, 3.0% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume . ",
  "text_data": "Age is 68.4 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular enlargement (Z-score 1.95), which can indicate atrophy, but hippocampal and whole brain volumes are within normal ranges. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal, making neurodegenerative dementia unlikely.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Ventricular enlargement raises some concern, but normal cognition and biomarker profiles support CN.)",
  "timestamp": "2025-07-26T09:26:59.468999"
}