{
  "ptid_time": "002_S_0955_2007-05-10",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0955/2007-05-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 54,910 mm³, 95.6% above the reference mean. With a Z-score of 2.19 (98.6th percentile), this represents significant enlargement; hippocampal volume measures 4,741 mm³, 33.4% below the reference mean. With a Z-score of -3.06 (0.1th percentile), this represents profound atrophy; whole brain volume measures 950,384 mm³, 2.5% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,002 mm³, 45.5% below the reference mean. With a Z-score of -2.79 (0.3th percentile), this represents significant atrophy; fusiform gyrus volume measures 12,636 mm³, 25.7% below the reference mean. With a Z-score of -2.34 (1.0th percentile), this represents significant atrophy; middle temporal gyrus volume measures 14,919 mm³, 22.2% below the reference mean. With a Z-score of -1.92 (2.7th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 78.7 years. Gender is Female. Education: 16 years. MMSE: 23.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant hippocampal and entorhinal cortex atrophy (Z-scores -3.06 and -2.79, respectively), which are hallmark features of Alzheimer's disease. Ventricular enlargement and atrophy in the fusiform gyrus and middle temporal gyrus further support neurodegenerative changes. The MMSE score of 23 indicates mild cognitive impairment.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T20:08:49.145057"
}