{
  "ptid_time": "016_S_4638_2012-08-21",
  "img_path": "/data/qiuhui/data/adni/images/016_S_4638/2012-08-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,864 mm³, 11.3% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; hippocampal volume measures 7,312 mm³, 3.3% below the reference mean. With a Z-score of -0.32 (37.5th percentile), this represents normal volume ; whole brain volume measures 1,162,070 mm³, 7.7% above the reference mean. With a Z-score of 0.99 (84.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,715 mm³, 9.4% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,552 mm³, 9.1% above the reference mean. With a Z-score of 0.77 (78.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,162 mm³, 3.9% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.0 years. Gender is Male. Education: 17 years. MMSE: 28.0. MoCA: 24.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ); Total tau: 180.20 pg/mL (normal ); Phosphorylated tau: 15.52 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 28, MoCA 24) are within normal limits for age, and biomarkers (T-tau, P-tau, AV45) are normal. No significant atrophy or pathological markers are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T00:28:33.257898"
}