{
  "ptid_time": "141_S_0982_2007-06-14",
  "img_path": "/data/qiuhui/data/adni/images/141_S_0982/2007-06-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,470 mm³, 28.4% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; hippocampal volume measures 5,705 mm³, 12.2% below the reference mean. With a Z-score of -0.97 (16.5th percentile), this represents normal volume ; whole brain volume measures 1,041,650 mm³, 12.2% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,347 mm³, 3.3% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,627 mm³, 3.0% below the reference mean. With a Z-score of -0.23 (41.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,477 mm³, 2.5% above the reference mean. With a Z-score of 0.22 (58.8th percentile), this represents normal volume . ",
  "text_data": "Age is 80.7 years. Gender is Female. Education: 16 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly reduced (12.2% below mean, Z-score -0.97), but still within the normal range. Other brain regions, including the entorhinal cortex and fusiform gyrus, show no significant atrophy. The MMSE score of 27 is within the normal range for age, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (mild hippocampal reduction but no significant cognitive impairment or widespread atrophy)",
  "timestamp": "2025-07-26T16:52:14.209131"
}