{
  "ptid_time": "023_S_4164_2017-12-18",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4164/2017-12-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,046 mm³, 37.7% above the reference mean. With a Z-score of 0.90 (81.7th percentile), this represents normal volume ; hippocampal volume measures 6,794 mm³, 10.1% below the reference mean. With a Z-score of -0.99 (16.2th percentile), this represents normal volume ; whole brain volume measures 1,118,780 mm³, 3.6% above the reference mean. With a Z-score of 0.47 (68.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,813 mm³, 7.0% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,503 mm³, 3.5% above the reference mean. With a Z-score of 0.30 (61.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,107 mm³, 1.1% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume . ",
  "text_data": "Age is 78.6 years. Gender is Male. Education: 12 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements, including hippocampal and entorhinal cortex volumes, are within normal ranges (Z-scores between -0.99 and 0.90). Cognitive screening (MMSE 30, MoCA 28) is intact, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:04:04.716732"
}