{
  "ptid_time": "016_S_4951_2017-02-14",
  "img_path": "/data/qiuhui/data/adni/images/016_S_4951/2017-02-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,479 mm³, 5.7% below the reference mean. With a Z-score of -0.13 (44.8th percentile), this represents normal volume ; hippocampal volume measures 7,407 mm³, 4.1% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; whole brain volume measures 987,939 mm³, 1.4% above the reference mean. With a Z-score of 0.17 (56.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,163 mm³, 13.3% above the reference mean. With a Z-score of 0.82 (79.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,907 mm³, 0.6% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,004 mm³, 9.6% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume . ",
  "text_data": "Age is 75.9 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores and percentiles indicating no significant atrophy. Cognitive scores (MMSE 30, MoCA 29) are also intact, and amyloid PET (AV45) is normal.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:34:09.678084"
}