{
  "ptid_time": "020_S_6470_2018-07-16",
  "img_path": "/data/qiuhui/data/adni/images/020_S_6470/2018-07-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,343 mm³, 24.4% above the reference mean. With a Z-score of 0.58 (71.9th percentile), this represents normal volume ; hippocampal volume measures 8,106 mm³, 1.0% above the reference mean. With a Z-score of 0.10 (53.9th percentile), this represents normal volume ; whole brain volume measures 1,115,740 mm³, 1.7% below the reference mean. With a Z-score of -0.23 (40.7th percentile), this represents normal volume ; entorhinal cortex volume measures 5,626 mm³, 32.0% above the reference mean. With a Z-score of 2.21 (98.7th percentile), this represents significant enlargement; fusiform gyrus volume measures 23,529 mm³, 18.2% above the reference mean. With a Z-score of 1.51 (93.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,470 mm³, 0.3% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume . ",
  "text_data": "Age is 68.9 years. Gender is Male. Education: 19 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 27.0. Logical Memory: 20.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal ventricular, hippocampal, whole brain, and middle temporal gyrus volumes, with significant enlargement in the entorhinal cortex and moderate enlargement in the fusiform gyrus. Cognitive scores (MMSE 30, MoCA 27) are within normal ranges, and the presence of one APOE4 allele does not strongly indicate impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to the unusual enlargement in entorhinal cortex and fusiform gyrus, though cognitive scores remain intact)",
  "timestamp": "2025-07-26T01:18:57.205876"
}