{
  "ptid_time": "941_S_6054_2019-07-29",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6054/2019-07-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,848 mm³, 5.7% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume ; hippocampal volume measures 6,397 mm³, 1.5% below the reference mean. With a Z-score of -0.12 (45.2th percentile), this represents normal volume ; whole brain volume measures 989,620 mm³, 6.6% above the reference mean. With a Z-score of 0.79 (78.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,331 mm³, 3.8% below the reference mean. With a Z-score of -0.21 (41.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,742 mm³, 16.3% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,850 mm³, 21.2% above the reference mean. With a Z-score of 1.89 (97.0th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 80.6 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 22.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex) are within normal ranges, with some regions (fusiform gyrus, middle temporal gyrus) showing mild to moderate enlargement. Cognitive scores (MMSE 30, MoCA 27) are within normal limits for age, and there is no APOE4 risk allele. No significant atrophy or cognitive impairment is evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:45:09.624174"
}