{
  "ptid_time": "010_S_0420_2007-03-13",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0420/2007-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,597 mm³, 49.1% below the reference mean. With a Z-score of -1.18 (12.0th percentile), this represents mild atrophy; hippocampal volume measures 7,253 mm³, 4.0% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume ; whole brain volume measures 1,053,700 mm³, 2.4% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,117 mm³, 0.4% above the reference mean. With a Z-score of 0.03 (51.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,877 mm³, 0.2% above the reference mean. With a Z-score of 0.02 (50.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,372 mm³, 9.5% above the reference mean. With a Z-score of 0.86 (80.4th percentile), this represents normal volume . ",
  "text_data": "Age is 73.9 years. Gender is Male. Education: 19 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal structures. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:30:54.410375"
}