{
  "ptid_time": "033_S_0516_2006-12-11",
  "img_path": "/data/qiuhui/data/adni/images/033_S_0516/2006-12-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,906 mm³, 49.2% below the reference mean. With a Z-score of -1.43 (7.7th percentile), this represents mild atrophy; hippocampal volume measures 7,588 mm³, 8.9% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; whole brain volume measures 1,056,560 mm³, 2.7% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,513 mm³, 13.7% above the reference mean. With a Z-score of 0.90 (81.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,813 mm³, 1.4% below the reference mean. With a Z-score of -0.12 (45.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,551 mm³, 3.1% below the reference mean. With a Z-score of -0.28 (39.1th percentile), this represents normal volume . ",
  "text_data": "Age is 88.1 years. Gender is Male. Education: 15 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). The MMSE score of 28 is within the normal range, and the absence of APOE4 alleles reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:12:47.055221"
}