{
  "ptid_time": "126_S_5243_2013-07-16",
  "img_path": "/data/qiuhui/data/adni/images/126_S_5243/2013-07-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,050 mm³, 40.2% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; whole brain volume measures 1,058,480 mm³, 1.9% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,206 mm³, 2.6% above the reference mean. With a Z-score of 0.17 (56.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,864 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,420 mm³, 9.0% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume . ",
  "text_data": "Age is 71.0 years. Gender is Male. Education: 12 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ); Amyloid beta: 1528.00 pg/mL (mild elevated); Total tau: 162.20 pg/mL (normal ); Phosphorylated tau: 14.20 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal ranges, with no significant atrophy in key regions like the entorhinal cortex or fusiform gyrus. Cognitive scores (MMSE 30, MoCA 27) are normal, and while Aβ is mildly elevated, tau markers and AV45 are normal, suggesting no strong evidence of Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mildly elevated Aβ, but otherwise normal biomarkers and cognitive performance)",
  "timestamp": "2025-07-26T12:53:14.997875"
}