{
  "ptid_time": "027_S_0307_2007-11-14",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0307/2007-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,363 mm³, 35.4% below the reference mean. With a Z-score of -1.03 (15.2th percentile), this represents mild atrophy; hippocampal volume measures 7,721 mm³, 10.8% above the reference mean. With a Z-score of 0.93 (82.5th percentile), this represents normal volume ; whole brain volume measures 995,184 mm³, 3.3% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,970 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.1th percentile), this represents normal volume ; fusiform gyrus volume measures 15,172 mm³, 16.0% below the reference mean. With a Z-score of -1.39 (8.3th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,521 mm³, 1.7% above the reference mean. With a Z-score of 0.16 (56.2th percentile), this represents normal volume . ",
  "text_data": "Age is 80.0 years. Gender is Male. Education: 19 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the ventricular volume and fusiform gyrus, but hippocampal, whole brain, entorhinal cortex, and middle temporal gyrus volumes are within normal ranges. The MMSE score of 29 is within the normal range, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in some regions but normal cognitive performance and no significant genetic risk)",
  "timestamp": "2025-07-26T03:33:33.418670"
}