{
  "ptid_time": "126_S_1187_2007-01-17",
  "img_path": "/data/qiuhui/data/adni/images/126_S_1187/2007-01-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,492 mm³, 15.5% above the reference mean. With a Z-score of 0.37 (64.5th percentile), this represents normal volume ; hippocampal volume measures 7,116 mm³, 5.9% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; whole brain volume measures 1,148,560 mm³, 6.4% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,878 mm³, 19.0% above the reference mean. With a Z-score of 1.29 (90.1th percentile), this represents mild enlargement; fusiform gyrus volume measures 19,928 mm³, 5.8% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,965 mm³, 2.9% above the reference mean. With a Z-score of 0.26 (60.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Male. Education: 12 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 1.0. APOEε4 alleles: 1.0. Biomarker levels: Total tau: 309.60 pg/mL (normal ); Phosphorylated tau: 26.44 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean (Z-score -0.57, 28.4th percentile), but still within the normal range. All other brain volumes, including whole brain and key cortical regions, are normal or mildly enlarged. The MMSE score of 28 is within the normal range, and CSF biomarkers (T-tau, P-tau) are normal.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to slight hippocampal reduction, but no significant clinical or biomarker evidence of impairment)",
  "timestamp": "2025-07-26T12:42:20.479889"
}