{
  "ptid_time": "007_S_1206_2007-01-30",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1206/2007-01-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,569 mm³, 5.3% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; hippocampal volume measures 7,703 mm³, 1.9% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; whole brain volume measures 1,137,260 mm³, 5.4% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,381 mm³, 6.8% above the reference mean. With a Z-score of 0.46 (67.9th percentile), this represents normal volume ; fusiform gyrus volume measures 20,160 mm³, 7.0% above the reference mean. With a Z-score of 0.60 (72.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,790 mm³, 11.5% above the reference mean. With a Z-score of 1.03 (84.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.9 years. Gender is Male. Education: 14 years. Handedness: Left. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Smoking; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Total tau: 246.70 pg/mL (normal ); Phosphorylated tau: 20.77 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within or above the reference range, with no significant atrophy. MMSE score of 29 is within the normal range, and biomarkers (T-tau, P-tau) are normal. APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:52:26.691148"
}