{
  "ptid_time": "073_S_5023_2014-12-03",
  "img_path": "/data/qiuhui/data/adni/images/073_S_5023/2014-12-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,616 mm³, 7.7% below the reference mean. With a Z-score of -0.19 (42.4th percentile), this represents normal volume ; hippocampal volume measures 7,956 mm³, 3.5% above the reference mean. With a Z-score of 0.40 (65.4th percentile), this represents normal volume ; whole brain volume measures 1,052,930 mm³, 2.3% above the reference mean. With a Z-score of 0.29 (61.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,820 mm³, 1.9% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,694 mm³, 2.7% above the reference mean. With a Z-score of 0.30 (61.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,328 mm³, 8.8% above the reference mean. With a Z-score of 0.78 (78.3th percentile), this represents normal volume . ",
  "text_data": "Age is 65.9 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.05 SUVR (normal ); Total tau: 266.10 pg/mL (normal ); Phosphorylated tau: 23.59 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. Cognitive scores (MMSE: 30, MoCA: 26) are normal, and biomarkers (T-tau, P-tau, AV45) are unremarkable. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T09:54:36.001493"
}