{
  "ptid_time": "036_S_1023_2008-02-28",
  "img_path": "/data/qiuhui/data/adni/images/036_S_1023/2008-02-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,832 mm³, 0.8% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; hippocampal volume measures 6,434 mm³, 9.6% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; whole brain volume measures 906,894 mm³, 7.0% below the reference mean. With a Z-score of -0.88 (19.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,835 mm³, 4.4% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; fusiform gyrus volume measures 15,201 mm³, 10.7% below the reference mean. With a Z-score of -0.97 (16.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 15,488 mm³, 19.2% below the reference mean. With a Z-score of -1.67 (4.8th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 78.1 years. Gender is Female. Education: 18 years. MMSE: 27.0. Logical Memory: 20.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume analysis shows mostly normal volumes, except for moderate atrophy in the middle temporal gyrus (Z-score -1.67, 4.8th percentile). The MMSE score of 27 is within the normal range (≥26), and hippocampal volume, though slightly reduced (Z-score -0.88), is still classified as normal. No significant atrophy in other key regions (e.g., entorhinal cortex, fusiform gyrus) is noted.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to isolated middle temporal gyrus atrophy but otherwise normal clinical and imaging findings)",
  "timestamp": "2025-07-26T06:08:47.220308"
}