{
  "ptid_time": "137_S_0796_2007-10-08",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0796/2007-10-08/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 8,051 mm³, 15.5% above the reference mean. With a Z-score of 1.34 (91.0th percentile), this represents mild enlargement; whole brain volume measures 1,127,870 mm³, 9.6% above the reference mean. With a Z-score of 1.26 (89.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,489 mm³, 12.1% below the reference mean. With a Z-score of -0.79 (21.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,337 mm³, 4.0% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,252 mm³, 15.3% above the reference mean. With a Z-score of 1.37 (91.4th percentile), this represents mild enlargement. ",
  "text_data": "Age is 81.3 years. Gender is Male. Education: 14 years. MMSE: 26.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 834.00 pg/mL (normal ); Total tau: 163.60 pg/mL (normal ); Phosphorylated tau: 14.52 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and whole brain volumes are mildly enlarged, while the entorhinal cortex and fusiform gyrus volumes are within normal ranges. Biomarkers (Aβ, T-tau, P-tau) are normal, and the MMSE score of 26 is borderline but not strongly indicative of cognitive impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MMSE but otherwise normal biomarkers and mostly preserved brain volumes)",
  "timestamp": "2025-07-26T16:17:25.313908"
}