{
  "ptid_time": "007_S_4387_2019-10-15",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4387/2019-10-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,788 mm³, 29.3% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; hippocampal volume measures 6,190 mm³, 4.7% below the reference mean. With a Z-score of -0.38 (35.3th percentile), this represents normal volume ; whole brain volume measures 950,286 mm³, 2.4% above the reference mean. With a Z-score of 0.29 (61.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,631 mm³, 4.9% above the reference mean. With a Z-score of 0.26 (60.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,282 mm³, 7.3% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,469 mm³, 8.0% above the reference mean. With a Z-score of 0.71 (76.1th percentile), this represents normal volume . ",
  "text_data": "Age is 84.1 years. Gender is Female. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are all within normal ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE score of 29 is within the normal range, and AV45 (amyloid PET) is normal, suggesting no significant amyloid pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:00:17.362588"
}