{
  "ptid_time": "021_S_4335_2017-06-07",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4335/2017-06-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,550 mm³, 16.1% below the reference mean. With a Z-score of -0.37 (35.6th percentile), this represents normal volume ; hippocampal volume measures 7,500 mm³, 5.4% above the reference mean. With a Z-score of 0.50 (69.0th percentile), this represents normal volume ; whole brain volume measures 1,012,500 mm³, 3.9% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,500 mm³, 22.5% above the reference mean. With a Z-score of 1.38 (91.7th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,258 mm³, 7.3% above the reference mean. With a Z-score of 0.67 (74.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,314 mm³, 11.2% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume . ",
  "text_data": "Age is 77.2 years. Gender is Female. Education: 15 years. MMSE: 27.0. MoCA: 28.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.43 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges or even mildly enlarged, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 27, MoCA 28) are within normal limits, and the absence of APOE4 and elevated AV45 (amyloid PET) suggests no strong biomarker evidence of Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:46:46.409271"
}