{
  "ptid_time": "013_S_5171_2013-05-30",
  "img_path": "/data/qiuhui/data/adni/images/013_S_5171/2013-05-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,455 mm³, 20.0% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; hippocampal volume measures 7,291 mm³, 2.5% above the reference mean. With a Z-score of 0.23 (59.0th percentile), this represents normal volume ; whole brain volume measures 1,010,170 mm³, 3.6% above the reference mean. With a Z-score of 0.46 (67.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,474 mm³, 5.4% below the reference mean. With a Z-score of -0.33 (37.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,055 mm³, 12.0% above the reference mean. With a Z-score of 1.09 (86.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,707 mm³, 8.0% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume . ",
  "text_data": "Age is 72.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ); Amyloid beta: 1596.00 pg/mL (mild elevated); Total tau: 220.90 pg/mL (normal ); Phosphorylated tau: 18.57 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with only mild enlargement noted in the fusiform gyrus. The MMSE score of 30 is intact, and biomarkers (Aβ mildly elevated but T-tau/P-tau normal) do not strongly suggest Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to mildly elevated Aβ, though other markers are reassuring)",
  "timestamp": "2025-07-25T23:37:33.794420"
}