{
  "ptid_time": "137_S_4623_2013-05-13",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4623/2013-05-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,065 mm³, 1.2% below the reference mean. With a Z-score of -0.03 (48.8th percentile), this represents normal volume ; hippocampal volume measures 8,190 mm³, 6.6% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume ; whole brain volume measures 1,103,170 mm³, 7.2% above the reference mean. With a Z-score of 0.90 (81.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,744 mm³, 3.8% below the reference mean. With a Z-score of -0.30 (38.3th percentile), this represents normal volume ; fusiform gyrus volume measures 20,542 mm³, 12.8% above the reference mean. With a Z-score of 1.44 (92.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,843 mm³, 11.3% above the reference mean. With a Z-score of 1.01 (84.3th percentile), this represents mild enlargement. ",
  "text_data": "Age is 62.1 years. Gender is Female. Education: 13 years. MMSE: 29.0. MoCA: 21.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with some mild enlargement in the fusiform gyrus and middle temporal gyrus. The MMSE score of 29 is normal, but the MoCA score of 21 suggests mild cognitive impairment (MCI). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (due to the discrepancy between MMSE and MoCA, and normal imaging despite cognitive concerns)",
  "timestamp": "2025-07-26T16:38:25.742684"
}