{
  "ptid_time": "941_S_4036_2015-06-26",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4036/2015-06-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 9,161 mm³, 76.2% below the reference mean. With a Z-score of -1.83 (3.4th percentile), this represents moderate atrophy; hippocampal volume measures 7,790 mm³, 3.1% above the reference mean. With a Z-score of 0.30 (61.7th percentile), this represents normal volume ; whole brain volume measures 1,032,030 mm³, 4.4% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,624 mm³, 12.8% above the reference mean. With a Z-score of 0.87 (80.7th percentile), this represents normal volume ; fusiform gyrus volume measures 22,106 mm³, 17.3% above the reference mean. With a Z-score of 1.48 (93.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,841 mm³, 11.7% below the reference mean. With a Z-score of -1.05 (14.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.0 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.96 SUVR (normal ); Total tau: 226.70 pg/mL (normal ); Phosphorylated tau: 18.58 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular atrophy (Z-score -1.83) and mild middle temporal gyrus atrophy (Z-score -1.05), but hippocampal, whole brain, entorhinal cortex, and fusiform gyrus volumes are normal or even enlarged. Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and biomarkers (T-tau, P-tau, AV45) are unremarkable.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in some regions but preserved cognition and normal biomarkers)",
  "timestamp": "2025-07-26T17:33:08.984027"
}