{
  "ptid_time": "022_S_6069_2018-12-21",
  "img_path": "/data/qiuhui/data/adni/images/022_S_6069/2018-12-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,814 mm³, 2.7% above the reference mean. With a Z-score of 0.06 (52.4th percentile), this represents normal volume ; hippocampal volume measures 8,500 mm³, 19.5% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement; whole brain volume measures 1,130,650 mm³, 16.0% above the reference mean. With a Z-score of 2.01 (97.8th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,884 mm³, 33.0% above the reference mean. With a Z-score of 2.02 (97.9th percentile), this represents significant enlargement; fusiform gyrus volume measures 19,444 mm³, 14.3% above the reference mean. With a Z-score of 1.30 (90.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,667 mm³, 7.8% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume . ",
  "text_data": "Age is 75.1 years. Gender is Female. Education: 18 years. MMSE: 27.0. MoCA: 28.0. Logical Memory: 18.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show significant enlargement in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus) compared to reference means, with Z-scores in the 90th–98th percentiles. Cognitive scores (MMSE 27, MoCA 28) are within normal ranges, and there is no evidence of atrophy or volume loss typically seen in MCI or dementia.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T02:23:54.545978"
}