{
  "ptid_time": "007_S_0070_2006-09-13",
  "img_path": "/data/qiuhui/data/adni/images/007_S_0070/2006-09-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,337 mm³, 16.0% below the reference mean. With a Z-score of -0.38 (35.0th percentile), this represents normal volume ; hippocampal volume measures 7,529 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; whole brain volume measures 1,103,780 mm³, 2.3% above the reference mean. With a Z-score of 0.29 (61.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,745 mm³, 8.7% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; fusiform gyrus volume measures 18,945 mm³, 0.6% above the reference mean. With a Z-score of 0.05 (51.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,617 mm³, 8.1% below the reference mean. With a Z-score of -0.73 (23.4th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Male. Education: 14 years. MMSE: 26.0. 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 26 is within the normal range (24-30), and the absence of APOE4 alleles reduces genetic risk. No significant atrophy or cognitive impairment is evident.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T21:44:42.751236"
}