{
  "ptid_time": "131_S_0384_2012-05-29",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0384/2012-05-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,188 mm³, 10.3% below the reference mean. With a Z-score of -0.30 (38.3th percentile), this represents normal volume ; hippocampal volume measures 6,135 mm³, 12.0% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy; whole brain volume measures 922,471 mm³, 10.4% below the reference mean. With a Z-score of -1.36 (8.7th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,992 mm³, 0.6% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; fusiform gyrus volume measures 14,436 mm³, 20.1% below the reference mean. With a Z-score of -1.74 (4.1th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 17,534 mm³, 13.1% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy. ",
  "text_data": "Age is 85.8 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Major Surgical Procedures. MMSE: 29.0. MoCA: 27.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild to moderate atrophy in several brain regions (hippocampus, whole brain, fusiform gyrus, middle temporal gyrus), but cognitive scores (MMSE 29, MoCA 27) are within normal limits for age. The absence of APOE4 reduces genetic predisposition to Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to structural changes without clinical symptoms, but atrophy patterns warrant",
  "timestamp": "2025-07-26T15:04:29.590437"
}