{
  "ptid_time": "003_S_6067_2019-10-01",
  "img_path": "/data/qiuhui/data/adni/images/003_S_6067/2019-10-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,815 mm³, 15.8% below the reference mean. With a Z-score of -0.39 (34.7th percentile), this represents normal volume ; hippocampal volume measures 8,244 mm³, 7.3% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; whole brain volume measures 1,024,490 mm³, 0.5% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; entorhinal cortex volume measures 5,117 mm³, 31.4% above the reference mean. With a Z-score of 2.44 (99.3th percentile), this represents significant enlargement; fusiform gyrus volume measures 17,154 mm³, 5.8% below the reference mean. With a Z-score of -0.65 (25.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,044 mm³, 2.3% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume . ",
  "text_data": "Age is 65.1 years. Gender is Female. Education: 18 years. MMSE: 28.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges, with the entorhinal cortex showing significant enlargement (likely incidental or compensatory). Cognitive scores (MMSE, MoCA) are normal, and amyloid PET (AV45) is negative. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:59:33.547209"
}