{
  "ptid_time": "135_S_5113_2015-04-15",
  "img_path": "/data/qiuhui/data/adni/images/135_S_5113/2015-04-15/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 9,165 mm³, 14.2% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement; whole brain volume measures 1,189,020 mm³, 4.8% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,524 mm³, 6.1% above the reference mean. With a Z-score of 0.42 (66.4th percentile), this represents normal volume ; fusiform gyrus volume measures 23,629 mm³, 18.7% above the reference mean. With a Z-score of 1.55 (94.0th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,658 mm³, 1.1% above the reference mean. With a Z-score of 0.09 (53.6th percentile), this represents normal volume . ",
  "text_data": "Age is 67.1 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is mildly enlarged (Z-score 1.42), and the fusiform gyrus shows moderate enlargement (Z-score 1.55), while other brain regions are within normal ranges. Cognitive testing (MMSE 30, MoCA 25) suggests no significant impairment, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**  \n\n*(No structural atrophy or biomarker evidence of Alzheimer’s pathology, and cognitive scores are largely intact despite MoCA being slightly below the typical cutoff of 26, which may reflect normal variation or mild non-AD factors.)*",
  "timestamp": "2025-07-26T15:47:53.615954"
}