{
  "ptid_time": "301_S_6224_2020-12-11",
  "img_path": "/data/qiuhui/data/adni/images/301_S_6224/2020-12-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,599 mm³, 12.4% below the reference mean. With a Z-score of -0.28 (38.9th percentile), this represents normal volume ; hippocampal volume measures 7,068 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; whole brain volume measures 871,249 mm³, 10.6% below the reference mean. With a Z-score of -1.34 (9.1th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,240 mm³, 15.4% above the reference mean. With a Z-score of 0.95 (82.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,167 mm³, 10.9% below the reference mean. With a Z-score of -0.99 (16.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,894 mm³, 11.9% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.9 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 24.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain and middle temporal gyrus, but hippocampal and entorhinal cortex volumes are normal. Cognitive testing reveals a perfect MMSE but a borderline MoCA (24/30), which could suggest subtle cognitive changes despite normal biomarker (AV45) and no APOE4 risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to conflicting MoCA vs. MMSE and mild atrophy without clear biomarker support for neurodegeneration)",
  "timestamp": "2025-07-26T17:24:32.327574"
}