{
  "ptid_time": "041_S_4874_2014-08-28",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4874/2014-08-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,479 mm³, 16.9% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; hippocampal volume measures 8,029 mm³, 2.8% above the reference mean. With a Z-score of 0.39 (65.3th percentile), this represents normal volume ; whole brain volume measures 1,044,010 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,040 mm³, 9.3% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,661 mm³, 4.2% below the reference mean. With a Z-score of -0.38 (35.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,772 mm³, 1.2% above the reference mean. With a Z-score of 0.10 (53.8th percentile), this represents normal volume . ",
  "text_data": "Age is 59.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ); Total tau: 229.90 pg/mL (normal ); Phosphorylated tau: 18.60 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 30, MoCA 29) are intact, and biomarkers (T-tau, P-tau, AV45) are normal. No structural or functional deficits suggestive of neurodegeneration are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:20:28.970556"
}