{
  "ptid_time": "128_S_2002_2010-12-13",
  "img_path": "/data/qiuhui/data/adni/images/128_S_2002/2010-12-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,442 mm³, 55.2% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy; hippocampal volume measures 7,777 mm³, 3.1% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; whole brain volume measures 1,115,570 mm³, 1.7% below the reference mean. With a Z-score of -0.24 (40.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,385 mm³, 20.6% below the reference mean. With a Z-score of -1.43 (7.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 21,902 mm³, 10.0% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,648 mm³, 3.4% below the reference mean. With a Z-score of -0.28 (38.9th percentile), this represents normal volume . ",
  "text_data": "Age is 65.3 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the ventricular volume and entorhinal cortex, but hippocampal and whole brain volumes are within normal ranges. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (Mild atrophy in some regions could suggest early changes, but cognitive performance remains strong.)",
  "timestamp": "2025-07-26T13:57:01.813917"
}