{
  "ptid_time": "041_S_1260_2008-03-03",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1260/2008-03-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,140 mm³, 26.9% below the reference mean. With a Z-score of -0.65 (25.9th percentile), this represents normal volume ; hippocampal volume measures 7,069 mm³, 6.5% below the reference mean. With a Z-score of -0.63 (26.4th percentile), this represents normal volume ; whole brain volume measures 1,021,460 mm³, 5.4% below the reference mean. With a Z-score of -0.70 (24.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,233 mm³, 3.2% above the reference mean. With a Z-score of 0.22 (58.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,826 mm³, 5.4% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,230 mm³, 14.6% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy. ",
  "text_data": "Age is 72.2 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 5.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.34 SUVR (normal ); Amyloid beta: 1056.00 pg/mL (normal ); Total tau: 182.50 pg/mL (normal ); Phosphorylated tau: 17.07 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges except for mild atrophy in the middle temporal gyrus. Cognitive testing (MMSE 28) and biomarkers (Aβ, T-tau, P-tau) are normal, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:04:11.741760"
}