{
  "ptid_time": "021_S_0276_2009-03-30",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0276/2009-03-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,935 mm³, 30.1% below the reference mean. With a Z-score of -0.72 (23.6th percentile), this represents normal volume ; hippocampal volume measures 8,586 mm³, 13.6% above the reference mean. With a Z-score of 1.33 (90.7th percentile), this represents mild enlargement; whole brain volume measures 1,197,530 mm³, 10.9% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,024 mm³, 1.9% below the reference mean. With a Z-score of -0.13 (45.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,972 mm³, 6.0% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,631 mm³, 15.4% above the reference mean. With a Z-score of 1.39 (91.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 73.9 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or mildly enlarged structures, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE score of 30 is optimal, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:24:56.497347"
}