{
  "ptid_time": "051_S_1131_2009-02-11",
  "img_path": "/data/qiuhui/data/adni/images/051_S_1131/2009-02-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 104,840 mm³, 123.0% above the reference mean. With a Z-score of 3.57 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 7,787 mm³, 11.8% above the reference mean. With a Z-score of 1.02 (84.5th percentile), this represents mild enlargement; whole brain volume measures 1,107,030 mm³, 7.6% above the reference mean. With a Z-score of 0.99 (83.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,468 mm³, 12.6% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,291 mm³, 6.8% above the reference mean. With a Z-score of 0.59 (72.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,478 mm³, 16.4% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 88.4 years. Gender is Male. Education: 7 years. MMSE: 29.0. Logical Memory: 3.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows profound ventricular enlargement (Z-score 3.57), which is a strong indicator of neurodegeneration, but hippocampal volume is mildly enlarged (Z-score 1.02) and whole brain volume is normal. The MMSE score of 29 is within the normal range, and there is no APOE4 risk allele. The entorhinal cortex is slightly reduced but still within normal limits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement is concerning, but preserved cognition and hippocampal volume suggest no significant impairment)",
  "timestamp": "2025-07-26T07:34:48.229554"
}