{
  "ptid_time": "006_S_0498_2007-03-13",
  "img_path": "/data/qiuhui/data/adni/images/006_S_0498/2007-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,541 mm³, 5.1% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; hippocampal volume measures 7,698 mm³, 1.8% above the reference mean. With a Z-score of 0.18 (57.1th percentile), this represents normal volume ; whole brain volume measures 1,119,520 mm³, 3.7% above the reference mean. With a Z-score of 0.48 (68.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,578 mm³, 11.6% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; fusiform gyrus volume measures 20,860 mm³, 10.7% above the reference mean. With a Z-score of 0.91 (82.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,567 mm³, 1.1% above the reference mean. With a Z-score of 0.10 (53.8th percentile), this represents normal volume . ",
  "text_data": "Age is 70.8 years. Gender is Male. Education: 12 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. The MMSE score of 28 is within the normal range (≥26), and there is no indication of cognitive impairment or significant atrophy.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T21:26:21.121453"
}