{
  "ptid_time": "018_S_4349_2013-11-26",
  "img_path": "/data/qiuhui/data/adni/images/018_S_4349/2013-11-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,753 mm³, 38.1% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; hippocampal volume measures 7,688 mm³, 8.1% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume ; whole brain volume measures 1,186,580 mm³, 21.7% above the reference mean. With a Z-score of 2.74 (99.7th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,459 mm³, 21.4% above the reference mean. With a Z-score of 1.31 (90.6th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,073 mm³, 6.2% above the reference mean. With a Z-score of 0.57 (71.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,719 mm³, 18.5% above the reference mean. With a Z-score of 1.61 (94.6th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 73.4 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ); Amyloid beta: 1034.00 pg/mL (normal ); Total tau: 182.20 pg/mL (normal ); Phosphorylated tau: 18.27 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within or above normal ranges, with no significant atrophy. Biomarkers (Aβ, T-tau, P-tau, AV45) are normal, and cognitive scores (MMSE 30, MoCA 25) do not indicate significant impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T00:57:19.554791"
}