{
  "ptid_time": "057_S_1265_2007-01-31",
  "img_path": "/data/qiuhui/data/adni/images/057_S_1265/2007-01-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,372 mm³, 50.3% below the reference mean. With a Z-score of -1.36 (8.7th percentile), this represents mild atrophy; hippocampal volume measures 6,135 mm³, 5.5% below the reference mean. With a Z-score of -0.44 (32.8th percentile), this represents normal volume ; whole brain volume measures 856,639 mm³, 7.7% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,695 mm³, 22.2% below the reference mean. With a Z-score of -1.20 (11.6th percentile), this represents mild atrophy; fusiform gyrus volume measures 14,376 mm³, 10.8% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 14,906 mm³, 17.3% below the reference mean. With a Z-score of -1.54 (6.2th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 82.2 years. Gender is Female. Education: 8 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Smoking; Major Surgical Procedures. MMSE: 26.0. Logical Memory: 4.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 860.90 pg/mL (normal ); Total tau: 291.40 pg/mL (normal ); Phosphorylated tau: 26.61 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The imaging shows mild to moderate atrophy in key regions (ventricular volume, entorhinal cortex, middle temporal gyrus), but hippocampal and whole brain volumes are within normal limits. CSF biomarkers (Aβ, T-tau, P-tau) are normal, and MMSE is borderline (26/30), suggesting no significant cognitive impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline MMSE and regional atrophy, but normal biomarkers and preserved hippocampal volume)",
  "timestamp": "2025-07-26T08:09:52.155143"
}