{
  "ptid_time": "126_S_0506_2006-06-14",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0506/2006-06-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,097 mm³, 21.5% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; hippocampal volume measures 7,470 mm³, 5.0% above the reference mean. With a Z-score of 0.46 (67.7th percentile), this represents normal volume ; whole brain volume measures 1,009,370 mm³, 3.6% above the reference mean. With a Z-score of 0.45 (67.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,939 mm³, 7.2% above the reference mean. With a Z-score of 0.44 (67.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,054 mm³, 6.1% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,850 mm³, 1.7% below the reference mean. With a Z-score of -0.14 (44.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 10 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Malignancy; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to the mean. The MMSE score of 29/30 indicates intact cognitive function, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:35:35.801149"
}