{
  "ptid_time": "003_S_5150_2013-05-24",
  "img_path": "/data/qiuhui/data/adni/images/003_S_5150/2013-05-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,868 mm³, 43.8% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy; hippocampal volume measures 9,045 mm³, 12.7% above the reference mean. With a Z-score of 1.27 (89.8th percentile), this represents mild enlargement; whole brain volume measures 1,179,150 mm³, 3.9% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,842 mm³, 9.9% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume ; fusiform gyrus volume measures 22,868 mm³, 14.9% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,194 mm³, 1.0% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume . ",
  "text_data": "Age is 66.4 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.96 SUVR (normal ); Total tau: 202.60 pg/mL (normal ); Phosphorylated tau: 18.88 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or even slightly enlarged volumes in key regions (hippocampus, fusiform gyrus). Cognitive scores (MMSE 29, MoCA 28) are intact, and biomarkers (T-tau, P-tau, AV45) are normal. No significant structural or biomarker evidence of neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:58:07.421189"
}