{
  "ptid_time": "137_S_0973_2007-12-03",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0973/2007-12-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 56,428 mm³, 46.5% above the reference mean. With a Z-score of 1.11 (86.7th percentile), this represents mild enlargement; hippocampal volume measures 7,163 mm³, 5.2% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; whole brain volume measures 1,039,780 mm³, 3.7% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,595 mm³, 12.3% below the reference mean. With a Z-score of -0.84 (20.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,462 mm³, 3.3% above the reference mean. With a Z-score of 0.28 (61.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,484 mm³, 8.7% below the reference mean. With a Z-score of -0.78 (21.7th percentile), this represents normal volume . ",
  "text_data": "Age is 77.8 years. Gender is Male. Education: 20 years. MMSE: 29.0. Logical Memory: 2.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.43 SUVR (normal ); Amyloid beta: 1198.00 pg/mL (normal ); Total tau: 185.40 pg/mL (normal ); Phosphorylated tau: 16.30 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (46.5% above mean, Z-score 1.11), but hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges (Z-scores between -0.84 and 0.28). Clinically, the patient has a normal MMSE (29/30), no APOE4 alleles, and normal CSF biomarkers (Aβ, T-tau, P-tau).  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High** (No significant structural atrophy or biomarker evidence of neurodegeneration, and cognitive performance is intact.)",
  "timestamp": "2025-07-26T16:21:49.455968"
}