{
  "ptid_time": "137_S_4632_2014-07-09",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4632/2014-07-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,080 mm³, 60.1% above the reference mean. With a Z-score of 1.43 (92.3th percentile), this represents mild enlargement; hippocampal volume measures 7,744 mm³, 3.5% below the reference mean. With a Z-score of -0.35 (36.2th percentile), this represents normal volume ; whole brain volume measures 1,149,140 mm³, 1.3% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,738 mm³, 11.1% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,268 mm³, 1.8% above the reference mean. With a Z-score of 0.15 (56.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,756 mm³, 1.5% above the reference mean. With a Z-score of 0.13 (55.0th percentile), this represents normal volume . ",
  "text_data": "Age is 69.7 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (60.1% above reference mean, Z-score 1.43), but hippocampal volume is normal (3.5% below reference mean, Z-score -0.35). Cognitive scores (MMSE 29, MoCA 27) are within normal range, and amyloid PET (AV45) is negative. No significant atrophy in AD-vulnerable regions.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T16:40:31.842472"
}