{
  "ptid_time": "094_S_4560_2014-04-22",
  "img_path": "/data/qiuhui/data/adni/images/094_S_4560/2014-04-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,880 mm³, 4.2% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume ; hippocampal volume measures 6,445 mm³, 9.4% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume ; whole brain volume measures 923,294 mm³, 5.3% below the reference mean. With a Z-score of -0.66 (25.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,769 mm³, 2.6% above the reference mean. With a Z-score of 0.16 (56.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,552 mm³, 14.9% above the reference mean. With a Z-score of 1.36 (91.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 17,368 mm³, 9.4% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume . ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., fusiform gyrus mild enlargement, hippocampal volume slightly below mean but still normal). Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:32:30.706112"
}