{
  "ptid_time": "126_S_0709_2006-07-26",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0709/2006-07-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 55,356 mm³, 17.7% above the reference mean. With a Z-score of 0.52 (69.7th percentile), this represents normal volume ; hippocampal volume measures 7,370 mm³, 5.8% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume ; whole brain volume measures 1,039,620 mm³, 1.0% above the reference mean. With a Z-score of 0.13 (55.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,180 mm³, 5.3% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume ; fusiform gyrus volume measures 16,065 mm³, 11.1% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,314 mm³, 9.2% below the reference mean. With a Z-score of -0.83 (20.5th percentile), this represents normal volume . ",
  "text_data": "Age is 83.8 years. Gender is Male. Education: 8 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and while APOE4 is a risk factor for Alzheimer’s, there are no structural or clinical signs of neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:39:14.198016"
}