{
  "ptid_time": "128_S_0272_2007-05-02",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0272/2007-05-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,951 mm³, 4.0% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; hippocampal volume measures 7,795 mm³, 9.6% above the reference mean. With a Z-score of 0.88 (81.0th percentile), this represents normal volume ; whole brain volume measures 1,112,120 mm³, 14.1% above the reference mean. With a Z-score of 1.78 (96.2th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,384 mm³, 19.4% above the reference mean. With a Z-score of 1.19 (88.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,709 mm³, 4.1% above the reference mean. With a Z-score of 0.37 (64.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,616 mm³, 28.4% above the reference mean. With a Z-score of 2.47 (99.3th percentile), this represents significant enlargement. ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 19 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.18 SUVR (mild reduced); Amyloid beta: 1206.00 pg/mL (normal ); Total tau: 240.10 pg/mL (normal ); Phosphorylated tau: 21.70 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, ventricular, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within or above normal ranges, with no atrophy. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive testing (MMSE: 30) is intact. No genetic risk (APOE4 negative).  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:43:49.988511"
}