{
  "ptid_time": "014_S_0519_2006-05-12",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0519/2006-05-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,667 mm³, 10.8% above the reference mean. With a Z-score of 0.26 (60.2th percentile), this represents normal volume ; hippocampal volume measures 7,749 mm³, 2.5% above the reference mean. With a Z-score of 0.25 (59.7th percentile), this represents normal volume ; whole brain volume measures 1,023,400 mm³, 5.2% below the reference mean. With a Z-score of -0.67 (25.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,851 mm³, 6.1% below the reference mean. With a Z-score of -0.41 (34.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,662 mm³, 0.9% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,669 mm³, 6.2% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Gastrointestinal; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1263.00 pg/mL (normal ); Total tau: 192.90 pg/mL (normal ); Phosphorylated tau: 15.07 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE 29/30) is intact. No significant atrophy or pathological markers are present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T23:40:14.607504"
}