{
  "ptid_time": "023_S_6400_2018-05-30",
  "img_path": "/data/qiuhui/data/adni/images/023_S_6400/2018-05-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,343 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.0th percentile), this represents normal volume ; hippocampal volume measures 7,289 mm³, 5.1% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume ; whole brain volume measures 1,020,880 mm³, 0.8% below the reference mean. With a Z-score of -0.10 (46.0th percentile), this represents normal volume ; entorhinal cortex volume measures 5,061 mm³, 30.0% above the reference mean. With a Z-score of 2.33 (99.0th percentile), this represents significant enlargement; fusiform gyrus volume measures 20,028 mm³, 10.0% above the reference mean. With a Z-score of 1.12 (87.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,759 mm³, 8.6% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume . ",
  "text_data": "Age is 64.3 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.05 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.58, 28.2th percentile). The entorhinal cortex shows significant enlargement (Z-score 2.33, 99th percentile), which is unusual but not typical of Alzheimer's pathology. Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to the atypical entorhinal enlargement, though cognitive and amyloid data support normalcy)",
  "timestamp": "2025-07-26T03:10:14.529128"
}