{
  "ptid_time": "128_S_0229_2012-03-08",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0229/2012-03-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,513 mm³, 60.7% below the reference mean. With a Z-score of -1.64 (5.1th percentile), this represents moderate atrophy; hippocampal volume measures 7,285 mm³, 12.2% above the reference mean. With a Z-score of 0.97 (83.5th percentile), this represents normal volume ; whole brain volume measures 920,652 mm³, 0.8% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume ; entorhinal cortex volume measures 2,622 mm³, 24.3% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,939 mm³, 1.1% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,099 mm³, 5.2% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume . ",
  "text_data": "Age is 80.4 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 29.0. MoCA: 30.0. Logical Memory: 21.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular atrophy and mild entorhinal cortex atrophy, but hippocampal volume is normal, and other regions (whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 29, MoCA 30) are intact, suggesting no significant functional impairment.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Atrophy in some regions could suggest early neurodegenerative changes, but cognitive performance remains high, and APOE4 status alone does not confirm pathology.)",
  "timestamp": "2025-07-26T13:40:46.822894"
}