{
  "ptid_time": "135_S_4598_2019-08-09",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4598/2019-08-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,737 mm³, 9.5% above the reference mean. With a Z-score of 0.22 (58.6th percentile), this represents normal volume ; hippocampal volume measures 6,923 mm³, 2.7% below the reference mean. With a Z-score of -0.25 (40.3th percentile), this represents normal volume ; whole brain volume measures 1,037,190 mm³, 6.4% above the reference mean. With a Z-score of 0.81 (79.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,568 mm³, 2.9% below the reference mean. With a Z-score of -0.18 (43.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,004 mm³, 5.8% above the reference mean. With a Z-score of 0.53 (70.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,058 mm³, 35.9% above the reference mean. With a Z-score of 3.12 (99.9th percentile), this represents profound enlargement. ",
  "text_data": "Age is 72.6 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) fall within normal ranges except for the middle temporal gyrus, which shows profound enlargement (Z-score 3.12). Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:39:18.944370"
}