{
  "ptid_time": "002_S_4473_2012-08-23",
  "img_path": "/data/qiuhui/data/adni/images/002_S_4473/2012-08-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 79,029 mm³, 105.2% above the reference mean. With a Z-score of 2.52 (99.4th percentile), this represents significant enlargement; whole brain volume measures 1,164,300 mm³, 7.9% above the reference mean. With a Z-score of 1.02 (84.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,658 mm³, 13.6% above the reference mean. With a Z-score of 0.92 (82.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,066 mm³, 6.5% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,558 mm³, 5.7% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume . ",
  "text_data": "Age is 75.3 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 24.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.52, 99.4th percentile), which is often associated with brain atrophy and neurodegenerative processes. However, other brain regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus) show normal or mildly enlarged volumes, and cognitive scores (MMSE 29, MoCA 24) are borderline normal to mildly impaired, suggesting possible early cognitive changes.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (ventricular enlargement is concerning, but cognitive scores are not severely impaired and other regions are relatively preserved).",
  "timestamp": "2025-07-25T20:28:13.963321"
}