{
  "ptid_time": "070_S_6394_2018-06-13",
  "img_path": "/data/qiuhui/data/adni/images/070_S_6394/2018-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,786 mm³, 91.5% above the reference mean. With a Z-score of 2.29 (98.9th percentile), this represents significant enlargement; hippocampal volume measures 6,913 mm³, 10.0% below the reference mean. With a Z-score of -1.13 (13.0th percentile), this represents mild atrophy; whole brain volume measures 924,741 mm³, 10.1% below the reference mean. With a Z-score of -1.26 (10.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,781 mm³, 2.9% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,576 mm³, 9.0% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 18,156 mm³, 11.5% below the reference mean. With a Z-score of -1.02 (15.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 67.2 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 30.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.05 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows significant ventricular enlargement (consistent with atrophy) and mild atrophy in the hippocampus, whole brain, fusiform gyrus, and middle temporal gyrus. However, cognitive scores (MMSE 30, MoCA 30) are intact, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Structural changes suggest early neurodegeneration, but cognitive performance remains unimpaired, making progression uncertain.)",
  "timestamp": "2025-07-26T09:06:44.844085"
}