{
  "ptid_time": "036_S_1023_2009-01-15",
  "img_path": "/data/qiuhui/data/adni/images/036_S_1023/2009-01-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,645 mm³, 5.6% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; hippocampal volume measures 6,425 mm³, 9.7% below the reference mean. With a Z-score of -0.89 (18.7th percentile), this represents normal volume ; whole brain volume measures 886,289 mm³, 9.1% below the reference mean. With a Z-score of -1.14 (12.7th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,017 mm³, 9.4% above the reference mean. With a Z-score of 0.58 (71.7th percentile), this represents normal volume ; fusiform gyrus volume measures 14,793 mm³, 13.0% below the reference mean. With a Z-score of -1.19 (11.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 15,641 mm³, 18.4% below the reference mean. With a Z-score of -1.60 (5.5th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 79.1 years. Gender is Female. Education: 18 years. MMSE: 29.0. Logical Memory: 20.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild to moderate atrophy in the whole brain, fusiform gyrus, and middle temporal gyrus, while hippocampal volume is within normal limits. The MMSE score of 29 is normal, suggesting no significant cognitive impairment at this time.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to atrophy in some regions but normal cognitive performance)",
  "timestamp": "2025-07-26T06:08:53.424611"
}