{
  "ptid_time": "116_S_6439_2018-06-29",
  "img_path": "/data/qiuhui/data/adni/images/116_S_6439/2018-06-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,909 mm³, 7.0% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; hippocampal volume measures 7,060 mm³, 8.1% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; whole brain volume measures 972,810 mm³, 5.5% below the reference mean. With a Z-score of -0.68 (24.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,144 mm³, 6.4% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,848 mm³, 7.5% below the reference mean. With a Z-score of -0.84 (20.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,255 mm³, 11.0% below the reference mean. With a Z-score of -0.98 (16.3th percentile), this represents normal volume . ",
  "text_data": "Age is 65.8 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.07 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within the normal range based on Z-scores and percentiles. Cognitive screening scores (MMSE 29, MoCA 30) are intact, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:18:49.627295"
}