{
  "ptid_time": "021_S_5129_2014-04-14",
  "img_path": "/data/qiuhui/data/adni/images/021_S_5129/2014-04-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,885 mm³, 29.2% below the reference mean. With a Z-score of -0.67 (25.2th percentile), this represents normal volume ; hippocampal volume measures 8,496 mm³, 19.4% above the reference mean. With a Z-score of 1.78 (96.3th percentile), this represents moderate enlargement; whole brain volume measures 1,090,960 mm³, 11.9% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,769 mm³, 2.6% above the reference mean. With a Z-score of 0.16 (56.4th percentile), this represents normal volume ; fusiform gyrus volume measures 21,489 mm³, 26.3% above the reference mean. With a Z-score of 2.39 (99.2th percentile), this represents significant enlargement; middle temporal gyrus volume measures 22,474 mm³, 17.2% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents mild enlargement. ",
  "text_data": "Age is 75.5 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows no atrophy in key regions typically affected in Alzheimer's (hippocampus is enlarged, not reduced). Cognitive scores (MMSE 30, MoCA 29) are intact, and APOE4 heterozygous status alone is insufficient for diagnosis without other biomarkers or clinical symptoms.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:53:38.345175"
}