{
  "ptid_time": "027_S_6317_2018-05-11",
  "img_path": "/data/qiuhui/data/adni/images/027_S_6317/2018-05-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,576 mm³, 14.6% below the reference mean. With a Z-score of -0.39 (34.7th percentile), this represents normal volume ; hippocampal volume measures 6,576 mm³, 1.3% above the reference mean. With a Z-score of 0.10 (54.0th percentile), this represents normal volume ; whole brain volume measures 926,433 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,635 mm³, 5.0% above the reference mean. With a Z-score of 0.27 (60.6th percentile), this represents normal volume ; fusiform gyrus volume measures 15,728 mm³, 2.4% below the reference mean. With a Z-score of -0.18 (42.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,797 mm³, 9.8% above the reference mean. With a Z-score of 0.87 (80.9th percentile), this represents normal volume . ",
  "text_data": "Age is 81.3 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 21.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.20 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all within normal ranges based on Z-scores and percentiles. However, the MoCA score of 21 (below the typical cutoff of 26 for normal cognition) suggests mild cognitive impairment, while the MMSE score of 30 is normal. The discrepancy between MMSE and MoCA, along with no significant atrophy, points to possible MCI rather than dementia.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (due to conflicting MMSE/MoCA results but no structural brain abnormalities supporting dementia)",
  "timestamp": "2025-07-26T04:12:57.405652"
}