{
  "ptid_time": "036_S_6189_2020-10-14",
  "img_path": "/data/qiuhui/data/adni/images/036_S_6189/2020-10-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,013 mm³, 50.1% below the reference mean. With a Z-score of -1.15 (12.6th percentile), this represents mild atrophy; hippocampal volume measures 7,688 mm³, 8.1% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume ; whole brain volume measures 1,101,880 mm³, 13.1% above the reference mean. With a Z-score of 1.64 (95.0th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,435 mm³, 20.7% above the reference mean. With a Z-score of 1.27 (89.9th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,464 mm³, 20.3% above the reference mean. With a Z-score of 1.85 (96.8th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 23,169 mm³, 20.9% above the reference mean. With a Z-score of 1.81 (96.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 72.0 years. Gender is Female. Education: 15 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal-to-enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 28, MoCA 25) are within normal limits, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**  \n\n(No significant structural or biomarker evidence of neurodegeneration or amyloid pathology, and cognitive performance is intact.)",
  "timestamp": "2025-07-26T06:22:43.929718"
}