{
  "ptid_time": "027_S_0116_2007-02-07",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0116/2007-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,554 mm³, 18.1% below the reference mean. With a Z-score of -0.43 (33.2th percentile), this represents normal volume ; hippocampal volume measures 6,864 mm³, 9.2% below the reference mean. With a Z-score of -0.90 (18.5th percentile), this represents normal volume ; whole brain volume measures 914,109 mm³, 15.3% below the reference mean. With a Z-score of -1.99 (2.3th percentile), this represents moderate atrophy; entorhinal cortex volume measures 4,201 mm³, 2.4% above the reference mean. With a Z-score of 0.17 (56.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,710 mm³, 6.0% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,126 mm³, 10.4% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume . ",
  "text_data": "Age is 79.4 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The whole brain volume shows moderate atrophy (Z-score -1.99, 2.3rd percentile), while hippocampal and other regional volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to whole brain atrophy but no cognitive or other biomarker evidence of impairment)",
  "timestamp": "2025-07-26T03:27:21.074747"
}