{
  "ptid_time": "941_S_6454_2018-06-27",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6454/2018-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,774 mm³, 4.6% below the reference mean. With a Z-score of -0.11 (45.8th percentile), this represents normal volume ; hippocampal volume measures 7,432 mm³, 4.5% above the reference mean. With a Z-score of 0.41 (65.9th percentile), this represents normal volume ; whole brain volume measures 1,092,150 mm³, 12.1% above the reference mean. With a Z-score of 1.52 (93.5th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,524 mm³, 23.2% above the reference mean. With a Z-score of 1.42 (92.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,180 mm³, 6.9% above the reference mean. With a Z-score of 0.62 (73.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,912 mm³, 19.5% above the reference mean. With a Z-score of 1.69 (95.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. MMSE: 27.0. MoCA: 28.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges or even enlarged, particularly in the whole brain, entorhinal cortex, and middle temporal gyrus. Cognitive scores (MMSE 27, MoCA 28) are well within the typical range for normal cognition, and there is no indication of significant atrophy in regions typically affected in Alzheimer's (e.g., hippocampus is normal). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConf",
  "timestamp": "2025-07-26T17:48:10.115868"
}