{
  "ptid_time": "114_S_0173_2008-02-14",
  "img_path": "/data/qiuhui/data/adni/images/114_S_0173/2008-02-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 54,264 mm³, 40.9% above the reference mean. With a Z-score of 0.98 (83.6th percentile), this represents normal volume ; hippocampal volume measures 6,660 mm³, 11.9% below the reference mean. With a Z-score of -1.16 (12.3th percentile), this represents mild atrophy; whole brain volume measures 1,020,900 mm³, 5.4% below the reference mean. With a Z-score of -0.70 (24.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,269 mm³, 20.3% below the reference mean. With a Z-score of -1.38 (8.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,764 mm³, 11.0% below the reference mean. With a Z-score of -0.94 (17.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,232 mm³, 4.2% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume . ",
  "text_data": "Age is 75.2 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The hippocampal and entorhinal cortex volumes show mild atrophy (Z-scores -1.16 and -1.38, respectively), which are early markers of Alzheimer's pathology. However, the MMSE score of 30 is normal, and there is no significant cognitive impairment reported.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (Structural changes suggest early neurodegeneration, but clinical cognition remains intact.)",
  "timestamp": "2025-07-26T11:38:19.239329"
}