{
  "ptid_time": "023_S_0926_2006-09-27",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0926/2006-09-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,673 mm³, 5.0% below the reference mean. With a Z-score of -0.11 (45.5th percentile), this represents normal volume ; hippocampal volume measures 7,143 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; whole brain volume measures 1,033,150 mm³, 6.0% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,623 mm³, 1.4% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,149 mm³, 12.6% above the reference mean. With a Z-score of 1.14 (87.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 17,580 mm³, 8.3% below the reference mean. With a Z-score of -0.72 (23.6th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Neurologic; Cardiovascular; Malignancy. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1351.00 pg/mL (normal ); Total tau: 151.70 pg/mL (mild reduced); Phosphorylated tau: 14.22 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or show only mild deviations without pathological significance. Cognitive testing (MMSE 29/30) is intact, and biomarkers (Aβ normal, T-tau mildly reduced, P-tau normal) do not suggest Alzheimer’s pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:49:45.575288"
}