{
  "ptid_time": "002_S_0413_2007-06-01",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0413/2007-06-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,853 mm³, 2.8% above the reference mean. With a Z-score of 0.06 (52.6th percentile), this represents normal volume ; hippocampal volume measures 6,995 mm³, 1.7% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume ; whole brain volume measures 1,089,420 mm³, 11.8% above the reference mean. With a Z-score of 1.48 (93.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,391 mm³, 19.6% above the reference mean. With a Z-score of 1.20 (88.5th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,775 mm³, 22.1% above the reference mean. With a Z-score of 2.01 (97.8th percentile), this represents significant enlargement; middle temporal gyrus volume measures 21,714 mm³, 13.3% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.3 years. Gender is Female. Education: 16 years. Handedness: Unknown. Race: Unknown. MMSE: 29.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 934.00 pg/mL (normal ); Total tau: 116.60 pg/mL (moderate reduced); Phosphorylated tau: 10.60 pg/mL (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or mildly enlarged volumes in key regions, including the hippocampus, which is only slightly below the reference mean. The MMSE score of 29 is within the normal range, and Aβ levels are normal, with reduced tau markers, which are not typical for Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:00:59.246558"
}