{
  "ptid_time": "114_S_0173_2006-02-10",
  "img_path": "/data/qiuhui/data/adni/images/114_S_0173/2006-02-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,186 mm³, 27.7% above the reference mean. With a Z-score of 0.66 (74.7th percentile), this represents normal volume ; hippocampal volume measures 6,951 mm³, 8.0% below the reference mean. With a Z-score of -0.78 (21.6th percentile), this represents normal volume ; whole brain volume measures 1,055,560 mm³, 2.2% below the reference mean. With a Z-score of -0.29 (38.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,521 mm³, 14.1% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; fusiform gyrus volume measures 17,074 mm³, 9.4% below the reference mean. With a Z-score of -0.80 (21.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,001 mm³, 7.8% above the reference mean. With a Z-score of 0.70 (75.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.2 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Gastrointestinal. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 991.30 pg/mL (normal ); Total tau: 305.60 pg/mL (normal ); Phosphorylated tau: 29.30 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volumes (including hippocampal, entorhinal cortex, and fusiform gyrus) are slightly below the reference mean but still within the normal range (Z-scores between -0.96 and 0.70). The MMSE score is perfect (30/30), and CSF biomarkers (Aβ, T-tau) are normal, with only mild elevation in P-tau. No significant cognitive or structural abnormalities are present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:37:57.407210"
}