{
  "ptid_time": "094_S_1241_2009-03-10",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1241/2009-03-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,098 mm³, 11.5% below the reference mean. With a Z-score of -0.27 (39.2th percentile), this represents normal volume ; hippocampal volume measures 7,294 mm³, 3.5% below the reference mean. With a Z-score of -0.34 (36.6th percentile), this represents normal volume ; whole brain volume measures 1,095,840 mm³, 1.5% above the reference mean. With a Z-score of 0.20 (57.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,220 mm³, 2.9% above the reference mean. With a Z-score of 0.20 (57.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,907 mm³, 15.6% below the reference mean. With a Z-score of -1.33 (9.3th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,263 mm³, 9.7% below the reference mean. With a Z-score of -0.87 (19.1th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Male. Education: 20 years. MMSE: 29.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mostly normal values, with only mild atrophy in the fusiform gyrus. The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant hippocampal or entorhinal cortex atrophy is present, which are key markers for Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:17:25.055554"
}