{
  "ptid_time": "072_S_4465_2014-02-25",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4465/2014-02-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 8,029 mm³, 64.1% below the reference mean. With a Z-score of -1.60 (5.4th percentile), this represents moderate atrophy; hippocampal volume measures 8,142 mm³, 6.0% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume ; whole brain volume measures 1,068,170 mm³, 3.8% above the reference mean. With a Z-score of 0.47 (68.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,510 mm³, 9.8% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,169 mm³, 0.2% below the reference mean. With a Z-score of -0.03 (49.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,919 mm³, 11.7% above the reference mean. With a Z-score of 1.04 (85.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 63.1 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 19.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.05 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy, but hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges or even mildly enlarged. Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal. APOE4 carrier status alone does not indicate pathology without other biomarkers.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:23:23.179364"
}