{
  "ptid_time": "116_S_6750_2019-06-18",
  "img_path": "/data/qiuhui/data/adni/images/116_S_6750/2019-06-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,682 mm³, 16.0% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; hippocampal volume measures 6,633 mm³, 12.2% below the reference mean. With a Z-score of -1.19 (11.6th percentile), this represents mild atrophy; whole brain volume measures 1,035,270 mm³, 4.1% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,071 mm³, 0.7% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,239 mm³, 7.4% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,822 mm³, 2.4% below the reference mean. With a Z-score of -0.22 (41.4th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Male. Education: 18 years. Handedness: Right. Race: Asian. MMSE: 28.0. MoCA: 27.0. Logical Memory: 14.0. Biomarker levels: Flobetaben (FBB): 0.92 SUVR (moderate reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows mild atrophy (Z-score -1.19, 11.6th percentile), which is a key biomarker for Alzheimer's disease, while other brain regions are within normal ranges. However, cognitive scores (MMSE 28, MoCA 27) are intact, suggesting no significant functional impairment.  \n\n**Diagnosis:** Mild Cognitive Impairment (MCI)  \n**Confidence:** Medium (due to hippocampal atrophy but preserved cognition)",
  "timestamp": "2025-07-26T12:19:55.906716"
}