{
  "ptid_time": "094_S_6278_2018-05-24",
  "img_path": "/data/qiuhui/data/adni/images/094_S_6278/2018-05-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,746 mm³, 49.3% below the reference mean. With a Z-score of -1.33 (9.2th percentile), this represents mild atrophy; hippocampal volume measures 6,750 mm³, 3.9% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; whole brain volume measures 833,302 mm³, 10.2% below the reference mean. With a Z-score of -1.23 (11.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,405 mm³, 1.7% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; fusiform gyrus volume measures 13,409 mm³, 16.8% below the reference mean. With a Z-score of -1.26 (10.4th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,724 mm³, 7.2% below the reference mean. With a Z-score of -0.64 (26.0th percentile), this represents normal volume . ",
  "text_data": "Age is 80.9 years. Gender is Female. Education: 16 years. Handedness: Right. Race: Asian. MMSE: 28.0. MoCA: 26.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild atrophy in ventricular volume, whole brain volume, and fusiform gyrus, but hippocampal and entorhinal cortex volumes are within normal ranges. Cognitive scores (MMSE 28, MoCA 26) are normal for age, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (mild atrophy in some regions could suggest early changes, but cognitive performance remains intact)",
  "timestamp": "2025-07-26T10:35:18.118395"
}