{
  "ptid_time": "941_S_4187_2017-06-05",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4187/2017-06-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,904 mm³, 37.0% below the reference mean. With a Z-score of -0.88 (18.9th percentile), this represents normal volume ; hippocampal volume measures 8,382 mm³, 4.4% above the reference mean. With a Z-score of 0.44 (67.1th percentile), this represents normal volume ; whole brain volume measures 1,242,550 mm³, 9.5% above the reference mean. With a Z-score of 1.35 (91.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,787 mm³, 12.3% above the reference mean. With a Z-score of 0.85 (80.3th percentile), this represents normal volume ; fusiform gyrus volume measures 23,330 mm³, 17.2% above the reference mean. With a Z-score of 1.43 (92.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,477 mm³, 4.8% above the reference mean. With a Z-score of 0.39 (65.2th percentile), this represents normal volume . ",
  "text_data": "Age is 68.0 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal ranges or show mild enlargement, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and amyloid PET (AV45) is normal, with no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:**",
  "timestamp": "2025-07-26T17:35:40.216929"
}