{
  "ptid_time": "109_S_4499_2014-03-27",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4499/2014-03-27/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,568 mm³, 8.6% above the reference mean. With a Z-score of 0.74 (77.2th percentile), this represents normal volume ; whole brain volume measures 1,091,180 mm³, 6.0% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,483 mm³, 12.9% above the reference mean. With a Z-score of 0.85 (80.2th percentile), this represents normal volume ; fusiform gyrus volume measures 22,954 mm³, 27.1% above the reference mean. With a Z-score of 2.34 (99.0th percentile), this represents significant enlargement; middle temporal gyrus volume measures 23,948 mm³, 18.7% above the reference mean. With a Z-score of 1.68 (95.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 85.8 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.94 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volumes (hippocampal, whole brain, entorhinal cortex) are within normal ranges or even enlarged, with no significant atrophy. The MMSE (29/30) is normal, and the MoCA (25/30) is borderline but not strongly indicative of cognitive impairment. APOE4-negative status and mild AV45 reduction further reduce Alzheimer's risk.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:34:32.237824"
}