{
  "ptid_time": "073_S_0746_2016-05-05",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0746/2016-05-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,712 mm³, 10.1% above the reference mean. With a Z-score of 0.27 (60.8th percentile), this represents normal volume ; hippocampal volume measures 5,820 mm³, 10.4% below the reference mean. With a Z-score of -0.83 (20.2th percentile), this represents normal volume ; whole brain volume measures 984,543 mm³, 6.1% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,738 mm³, 20.9% below the reference mean. With a Z-score of -1.13 (12.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,015 mm³, 11.8% above the reference mean. With a Z-score of 0.89 (81.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,951 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.5th percentile), this represents normal volume . ",
  "text_data": "Age is 82.8 years. Gender is Female. Education: 18 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.90 SUVR (mild reduced); Total tau: 301.70 pg/mL (normal ); Phosphorylated tau: 26.01 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.83), while the entorhinal cortex shows mild atrophy (Z-score -1.13). Cognitive scores (MMSE 27, MoCA 24) are borderline but not strongly indicative of impairment. Biomarkers (T-tau, P-tau, AV45) do not strongly suggest Alzheimer’s pathology.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline cognitive scores and mild entorhinal atrophy, but lack of strong biomarker or hippocampal evidence for dementia)",
  "timestamp": "2025-07-26T09:35:04.580062"
}