{
  "ptid_time": "073_S_0746_2010-02-01",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0746/2010-02-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,726 mm³, 16.6% above the reference mean. With a Z-score of 0.38 (64.8th percentile), this represents normal volume ; hippocampal volume measures 6,578 mm³, 7.5% below the reference mean. With a Z-score of -0.69 (24.5th percentile), this represents normal volume ; whole brain volume measures 972,650 mm³, 0.2% below the reference mean. With a Z-score of -0.03 (49.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,324 mm³, 9.5% below the reference mean. With a Z-score of -0.58 (28.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,974 mm³, 5.6% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,835 mm³, 7.0% below the reference mean. With a Z-score of -0.60 (27.3th percentile), this represents normal volume . ",
  "text_data": "Age is 76.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Total tau: 255.20 pg/mL (normal ); Phosphorylated tau: 23.12 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30 is optimal, and biomarkers (T-tau, P-tau) are normal. No significant atrophy or cognitive impairment is evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:34:31.282536"
}