{
  "ptid_time": "136_S_0300_2006-11-15",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0300/2006-11-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,696 mm³, 10.7% above the reference mean. With a Z-score of 0.14 (55.7th percentile), this represents normal volume ; hippocampal volume measures 7,324 mm³.; whole brain volume measures 1,355,300 mm³, 13.7% above the reference mean. With a Z-score of 2.53 (99.4th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,156 mm³, 3.8% above the reference mean. With a Z-score of 0.33 (63.1th percentile), this represents normal volume ; fusiform gyrus volume measures 21,881 mm³, 5.0% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 28,248 mm³.. ",
  "text_data": "Age is 56.9 years. Gender is Male. Education: 16 years. MMSE: 23.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume (7,324 mm³) is within normal range, and other brain structures (ventricular, entorhinal cortex, fusiform gyrus, middle temporal gyrus) show no significant atrophy. However, the MMSE score of 23 suggests mild cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MMSE and APOE4 status, but lack of significant structural atrophy)",
  "timestamp": "2025-07-26T16:00:47.616845"
}