{
  "ptid_time": "009_S_4388_2017-07-27",
  "img_path": "/data/qiuhui/data/adni/images/009_S_4388/2017-07-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,850 mm³, 39.8% above the reference mean. With a Z-score of 0.95 (83.0th percentile), this represents normal volume ; hippocampal volume measures 8,118 mm³, 7.4% above the reference mean. With a Z-score of 0.72 (76.5th percentile), this represents normal volume ; whole brain volume measures 1,133,830 mm³, 5.0% above the reference mean. With a Z-score of 0.65 (74.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,787 mm³, 16.7% above the reference mean. With a Z-score of 1.14 (87.2th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,205 mm³, 3.4% below the reference mean. With a Z-score of -0.29 (38.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,905 mm³, 12.0% above the reference mean. With a Z-score of 1.08 (86.0th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.3 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 24.0. APOEε4 alleles: 2.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges or mildly enlarged, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal, despite the presence of two APOE4 alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:21:02.183354"
}