{
  "ptid_time": "020_S_5140_2017-11-21",
  "img_path": "/data/qiuhui/data/adni/images/020_S_5140/2017-11-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,596 mm³, 8.8% below the reference mean. With a Z-score of -0.20 (42.0th percentile), this represents normal volume ; hippocampal volume measures 8,622 mm³, 21.2% above the reference mean. With a Z-score of 1.94 (97.4th percentile), this represents moderate enlargement; whole brain volume measures 984,672 mm³, 1.0% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,892 mm³, 6.0% above the reference mean. With a Z-score of 0.37 (64.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,462 mm³, 2.6% above the reference mean. With a Z-score of 0.24 (59.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,713 mm³, 7.6% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume . ",
  "text_data": "Age is 74.8 years. Gender is Female. Education: 18 years. MMSE: 27.0. MoCA: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.09 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with the exception of the hippocampus, which shows moderate enlargement (97.4th percentile). Cognitive scores (MMSE 27, MoCA 29) are in the normal range, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:16:49.740396"
}