{
  "ptid_time": "073_S_4312_2013-12-10",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4312/2013-12-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,188 mm³, 34.6% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; hippocampal volume measures 7,028 mm³, 7.0% below the reference mean. With a Z-score of -0.69 (24.7th percentile), this represents normal volume ; whole brain volume measures 1,034,820 mm³, 4.1% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,366 mm³, 6.5% above the reference mean. With a Z-score of 0.44 (67.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,063 mm³, 4.1% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,651 mm³, 6.1% above the reference mean. With a Z-score of 0.55 (71.0th percentile), this represents normal volume . ",
  "text_data": "Age is 71.3 years. Gender is Male. Education: 17 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 15.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ); Amyloid beta: 578.90 pg/mL (mild reduced); Total tau: 228.60 pg/mL (normal ); Phosphorylated tau: 20.89 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 27, MoCA 24) are borderline but not strongly indicative of impairment. Biomarkers show mild Aβ reduction but normal tau and AV45, suggesting minimal Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and mild Aβ reduction, but otherwise normal findings)",
  "timestamp": "2025-07-26T09:43:41.988824"
}