{
  "ptid_time": "037_S_6031_2019-10-08",
  "img_path": "/data/qiuhui/data/adni/images/037_S_6031/2019-10-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,557 mm³, 8.0% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; hippocampal volume measures 7,539 mm³, 1.9% below the reference mean. With a Z-score of -0.21 (41.6th percentile), this represents normal volume ; whole brain volume measures 1,058,250 mm³, 2.8% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,928 mm³, 26.6% above the reference mean. With a Z-score of 2.06 (98.0th percentile), this represents significant enlargement; fusiform gyrus volume measures 19,062 mm³, 4.7% above the reference mean. With a Z-score of 0.53 (70.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,107 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (42.9th percentile), this represents normal volume . ",
  "text_data": "Age is 69.2 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 20.0. APOEε4 alleles: 2.0. Biomarker levels: Florbetapir (AV45): 1.10 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with no significant atrophy in key regions like the hippocampus or ventricles. Cognitive scores (MMSE and MoCA) are perfect (30/30), and amyloid PET (AV45) is normal, despite the presence of two APOE4 alleles. The entorhinal cortex shows significant enlargement, which is unusual but not typical of Alzheimer's pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:52:55.071255"
}