{
  "ptid_time": "041_S_4874_2017-08-04",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4874/2017-08-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,448 mm³, 12.9% below the reference mean. With a Z-score of -0.32 (37.3th percentile), this represents normal volume ; hippocampal volume measures 8,169 mm³, 6.3% above the reference mean. With a Z-score of 0.71 (76.1th percentile), this represents normal volume ; whole brain volume measures 1,018,830 mm³, 1.0% below the reference mean. With a Z-score of -0.12 (45.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,360 mm³, 12.0% above the reference mean. With a Z-score of 0.93 (82.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,318 mm³, 4.9% below the reference mean. With a Z-score of -0.55 (29.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,526 mm³, 4.8% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume . ",
  "text_data": "Age is 62.7 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 29, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. The presence of one APOE4 allele does not override the absence of structural or biomarker abnormalities.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:20:36.377043"
}