{
  "ptid_time": "057_S_0643_2009-07-22",
  "img_path": "/data/qiuhui/data/adni/images/057_S_0643/2009-07-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,369 mm³, 31.0% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; hippocampal volume measures 7,712 mm³, 8.4% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; whole brain volume measures 1,066,250 mm³, 9.4% above the reference mean. With a Z-score of 1.18 (88.2th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,553 mm³, 24.0% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,356 mm³, 2.0% above the reference mean. With a Z-score of 0.18 (57.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,401 mm³, 1.2% above the reference mean. With a Z-score of 0.10 (54.2th percentile), this represents normal volume . ",
  "text_data": "Age is 74.4 years. Gender is Female. Education: 15 years. MMSE: 30.0. Logical Memory: 15.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (hippocampal, ventricular, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. The MMSE score of 30/30 indicates no cognitive impairment, and while the APOE4 homozygous status is a genetic risk factor, there are no current clinical or structural signs of neurodegeneration.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T08:04:15.487246"
}