{
  "ptid_time": "129_S_6459_2018-06-27",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6459/2018-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,032 mm³, 46.1% below the reference mean. With a Z-score of -1.15 (12.4th percentile), this represents mild atrophy; hippocampal volume measures 8,292 mm³, 7.9% above the reference mean. With a Z-score of 0.89 (81.2th percentile), this represents normal volume ; whole brain volume measures 1,059,020 mm³, 2.9% above the reference mean. With a Z-score of 0.36 (64.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,819 mm³, 1.9% below the reference mean. With a Z-score of -0.15 (44.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,797 mm³, 7.8% below the reference mean. With a Z-score of -0.87 (19.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,217 mm³, 13.1% above the reference mean. With a Z-score of 1.17 (87.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 66.0 years. Gender is Female. Education: 16 years. Handedness: Left. Race: White. MMSE: 29.0. MoCA: 29.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and whole brain. Cognitive scores (MMSE 29, MoCA 29) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk allele.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:19:57.824721"
}