{
  "ptid_time": "014_S_0558_2007-01-16",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0558/2007-01-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,767 mm³, 1.6% above the reference mean. With a Z-score of 0.05 (51.8th percentile), this represents normal volume ; hippocampal volume measures 6,264 mm³, 10.1% below the reference mean. With a Z-score of -0.87 (19.1th percentile), this represents normal volume ; whole brain volume measures 1,074,460 mm³, 4.4% above the reference mean. With a Z-score of 0.58 (71.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,757 mm³, 5.3% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,934 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,550 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 80.3 years. Gender is Male. Education: 19 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 29 is within the normal range (≥26), and the absence of APOE4 alleles reduces genetic risk. No significant atrophy or cognitive impairment is evident.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T23:44:08.597237"
}