{
  "ptid_time": "007_S_4387_2015-12-07",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4387/2015-12-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,342 mm³, 9.1% above the reference mean. With a Z-score of 0.25 (59.7th percentile), this represents normal volume ; hippocampal volume measures 6,122 mm³, 5.7% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume ; whole brain volume measures 963,155 mm³, 3.8% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,879 mm³, 12.0% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; fusiform gyrus volume measures 17,816 mm³, 10.6% above the reference mean. With a Z-score of 0.80 (78.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,913 mm³, 10.5% above the reference mean. With a Z-score of 0.93 (82.4th percentile), this represents normal volume . ",
  "text_data": "Age is 80.1 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are all within normal ranges, with no significant atrophy in key regions like the hippocampus. Cognitive scores (MMSE 29, MoCA 26) are also within normal limits for age, and amyloid PET (AV45) is normal. The presence of one APOE4 allele does not outweigh the absence of structural or functional deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T21:59:55.312285"
}