{
  "ptid_time": "002_S_2010_2011-01-22",
  "img_path": "/data/qiuhui/data/adni/images/002_S_2010/2011-01-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,208 mm³, 31.9% below the reference mean. With a Z-score of -0.80 (21.2th percentile), this represents normal volume ; hippocampal volume measures 7,929 mm³, 3.2% above the reference mean. With a Z-score of 0.36 (63.9th percentile), this represents normal volume ; whole brain volume measures 966,952 mm³, 6.0% below the reference mean. With a Z-score of -0.75 (22.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,427 mm³, 12.0% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,144 mm³, 11.3% below the reference mean. With a Z-score of -1.28 (10.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,851 mm³, 3.3% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume . ",
  "text_data": "Age is 63.4 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 24.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with only mild atrophy noted in the fusiform gyrus. Cognitive scores (MMSE 29, MoCA 24) suggest slight impairment on the MoCA but no significant functional decline. APOE4 carrier status increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (due to borderline MoCA and mild fusiform atrophy, but no clear dementia-level deficits)",
  "timestamp": "2025-07-25T20:17:57.061118"
}