{
  "ptid_time": "037_S_0454_2007-06-13",
  "img_path": "/data/qiuhui/data/adni/images/037_S_0454/2007-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,084 mm³, 10.5% below the reference mean. With a Z-score of -0.28 (38.8th percentile), this represents normal volume ; hippocampal volume measures 6,902 mm³, 6.3% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume ; whole brain volume measures 930,520 mm³, 0.3% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,118 mm³, 10.0% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; fusiform gyrus volume measures 13,374 mm³, 17.0% below the reference mean. With a Z-score of -1.28 (10.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,148 mm³, 10.4% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume . ",
  "text_data": "Age is 82.8 years. Gender is Female. Education: 13 years. MMSE: 29.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.36 SUVR (normal ); Amyloid beta: 1627.00 pg/mL (moderate elevated); Total tau: 324.40 pg/mL (mild elevated); Phosphorylated tau: 29.59 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mostly normal values, with only mild atrophy in the fusiform gyrus. The MMSE score of 29 is within the normal range, and while CSF biomarkers (Aβ, T-tau, P-tau) are mildly to moderately elevated, they are not strongly indicative of Alzheimer's pathology in isolation.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting biomarker data but preserved cognitive function and largely normal brain volumes)",
  "timestamp": "2025-07-26T06:28:29.427410"
}