{
  "ptid_time": "018_S_0043_2007-02-06",
  "img_path": "/data/qiuhui/data/adni/images/018_S_0043/2007-02-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,249 mm³, 11.1% below the reference mean. With a Z-score of -0.27 (39.5th percentile), this represents normal volume ; hippocampal volume measures 7,555 mm³, 0.1% below the reference mean. With a Z-score of -0.01 (49.8th percentile), this represents normal volume ; whole brain volume measures 1,045,130 mm³, 3.2% below the reference mean. With a Z-score of -0.41 (34.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,830 mm³, 17.8% above the reference mean. With a Z-score of 1.21 (88.6th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,495 mm³, 8.8% above the reference mean. With a Z-score of 0.75 (77.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,402 mm³, 9.1% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume . ",
  "text_data": "Age is 77.2 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) all fall within normal ranges or show mild enlargement, with no significant atrophy. The MMSE score of 29 is within the normal range, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:41:44.319875"
}