{
  "ptid_time": "941_S_6254_2019-05-15",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6254/2019-05-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,912 mm³, 17.0% below the reference mean. With a Z-score of -0.40 (34.3th percentile), this represents normal volume ; hippocampal volume measures 7,546 mm³, 6.0% below the reference mean. With a Z-score of -0.60 (27.5th percentile), this represents normal volume ; whole brain volume measures 1,027,640 mm³, 9.4% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,612 mm³, 8.2% above the reference mean. With a Z-score of 0.57 (71.5th percentile), this represents normal volume ; fusiform gyrus volume measures 22,089 mm³, 11.0% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,196 mm³, 14.3% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 68.7 years. Gender is Male. Education: 14 years. Handedness: Right. Race: More than one race. MMSE: 28.0. MoCA: 20.0. Logical Memory: 10.0. Biomarker levels: Flobetaben (FBB): 1.25 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain and middle temporal gyrus, but other regions (hippocampus, entorhinal cortex, fusiform gyrus) are within normal ranges. The MMSE score is normal (28/30), but the MoCA score (20/30) suggests mild cognitive impairment, particularly in executive function, attention, or memory domains.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (imaging shows mild atrophy but not strongly Alzheimer's-pattern, and MoCA is borderline for MCI vs. early dementia)",
  "timestamp": "2025-07-26T17:46:22.973509"
}