{
  "ptid_time": "127_S_5228_2017-10-23",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5228/2017-10-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,856 mm³, 3.0% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; hippocampal volume measures 7,194 mm³, 10.8% above the reference mean. With a Z-score of 0.86 (80.6th percentile), this represents normal volume ; whole brain volume measures 973,664 mm³, 4.9% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,299 mm³, 4.7% below the reference mean. With a Z-score of -0.26 (39.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,029 mm³, 11.9% above the reference mean. With a Z-score of 0.90 (81.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,424 mm³, 18.8% above the reference mean. With a Z-score of 1.68 (95.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 81.8 years. Gender is Female. Education: 15 years. MMSE: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures are within normal ranges or show enlargement, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE score of 30/30 indicates intact cognitive function, and the absence of APOE4 and normal AV45 further reduce Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:28:53.017553"
}