{
  "ptid_time": "027_S_6842_2020-01-31",
  "img_path": "/data/qiuhui/data/adni/images/027_S_6842/2020-01-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,217 mm³, 21.9% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume ; hippocampal volume measures 7,748 mm³, 8.9% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; whole brain volume measures 1,068,140 mm³, 9.6% above the reference mean. With a Z-score of 1.21 (88.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,921 mm³, 34.0% above the reference mean. With a Z-score of 2.09 (98.1th percentile), this represents significant enlargement; fusiform gyrus volume measures 18,842 mm³, 10.8% above the reference mean. With a Z-score of 0.98 (83.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,386 mm³, 6.3% above the reference mean. With a Z-score of 0.55 (70.9th percentile), this represents normal volume . ",
  "text_data": "Age is 72.2 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 27.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal to above-normal volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. Cognitive scores (MMSE 29, MoCA 27) are within the normal range for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T04:14:53.038354"
}