{
  "ptid_time": "941_S_4036_2012-01-25",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4036/2012-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,103 mm³, 73.8% below the reference mean. With a Z-score of -1.77 (3.9th percentile), this represents moderate atrophy; hippocampal volume measures 7,846 mm³, 3.8% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; entorhinal cortex volume measures 5,481 mm³, 33.7% above the reference mean. With a Z-score of 2.28 (98.9th percentile), this represents significant enlargement; fusiform gyrus volume measures 22,179 mm³, 17.7% above the reference mean. With a Z-score of 1.51 (93.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,076 mm³, 10.6% below the reference mean. With a Z-score of -0.95 (17.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy, which could suggest some neurodegenerative changes, but hippocampal volume is normal, and entorhinal cortex and fusiform gyrus volumes are enlarged, which is atypical for Alzheimer's. Cognitive scores (MMSE 28, MoCA 25) are within normal limits, and APOE4 is negative.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to conflicting imaging findings despite normal cognition)",
  "timestamp": "2025-07-26T17:32:46.439295"
}