{
  "ptid_time": "027_S_0116_2010-02-18",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0116/2010-02-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,895 mm³, 21.5% below the reference mean. With a Z-score of -0.63 (26.6th percentile), this represents normal volume ; hippocampal volume measures 6,759 mm³, 3.0% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; whole brain volume measures 894,927 mm³, 13.0% below the reference mean. With a Z-score of -1.71 (4.4th percentile), this represents moderate atrophy; entorhinal cortex volume measures 4,055 mm³, 2.2% above the reference mean. With a Z-score of 0.14 (55.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,398 mm³, 3.7% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,058 mm³, 5.5% below the reference mean. With a Z-score of -0.49 (31.0th percentile), this represents normal volume . ",
  "text_data": "Age is 82.4 years. Gender is Male. Education: 18 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The whole brain shows moderate atrophy (Z-score -1.71, 4.4th percentile), but hippocampal and other key regional volumes are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to whole brain atrophy but preserved cognition and no other concerning biomarkers)",
  "timestamp": "2025-07-26T03:27:56.643073"
}