{
  "ptid_time": "041_S_6136_2019-12-17",
  "img_path": "/data/qiuhui/data/adni/images/041_S_6136/2019-12-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,697 mm³, 34.4% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume ; hippocampal volume measures 7,725 mm³, 3.8% below the reference mean. With a Z-score of -0.38 (35.3th percentile), this represents normal volume ; whole brain volume measures 1,096,320 mm³, 3.4% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; entorhinal cortex volume measures 7,062 mm³, 65.7% above the reference mean. With a Z-score of 4.54 (100.0th percentile), this represents profound enlargement; fusiform gyrus volume measures 20,340 mm³, 2.2% above the reference mean. With a Z-score of 0.18 (57.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,825 mm³, 16.0% below the reference mean. With a Z-score of -1.32 (9.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 63.1 years. Gender is Male. Education: 12 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with the exception of mild atrophy in the middle temporal gyrus and a profoundly enlarged entorhinal cortex (which is unusual and may warrant further investigation). Cognitive scores (MMSE 28, MoCA 25) are within normal limits, though the MoCA is slightly lower than expected for age. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to the atypical entorhinal enlargement and slightly reduced MoCA, though no clear cognitive impairment is present)",
  "timestamp": "2025-07-26T07:28:38.710313"
}