{
  "ptid_time": "007_S_4516_2014-02-17",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4516/2014-02-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,866 mm³, 4.3% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume ; hippocampal volume measures 7,346 mm³, 2.8% below the reference mean. With a Z-score of -0.28 (39.2th percentile), this represents normal volume ; whole brain volume measures 1,071,180 mm³, 0.8% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,149 mm³, 1.2% above the reference mean. With a Z-score of 0.08 (53.2th percentile), this represents normal volume ; fusiform gyrus volume measures 21,806 mm³, 15.8% above the reference mean. With a Z-score of 1.34 (91.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,555 mm³, 5.7% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ); Amyloid beta: 1312.00 pg/mL (normal ); Total tau: 237.00 pg/mL (normal ); Phosphorylated tau: 20.28 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or slightly above, with only the fusiform gyrus showing mild enlargement. Cognitive scores (MMSE 28, MoCA 26) are normal, and biomarkers (Aβ, T-tau, P-tau, AV45) are unremarkable.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:02:48.028861"
}