{
  "ptid_time": "114_S_0410_2006-04-18",
  "img_path": "/data/qiuhui/data/adni/images/114_S_0410/2006-04-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,100 mm³, 10.0% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; hippocampal volume measures 9,104 mm³, 18.5% above the reference mean. With a Z-score of 2.07 (98.1th percentile), this represents significant enlargement; whole brain volume measures 1,074,320 mm³, 4.4% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,477 mm³, 10.7% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,355 mm³, 6.3% above the reference mean. With a Z-score of 0.71 (76.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,053 mm³, 2.3% below the reference mean. With a Z-score of -0.20 (42.0th percentile), this represents normal volume . ",
  "text_data": "Age is 61.3 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 1327.00 pg/mL (normal ); Total tau: 275.90 pg/mL (normal ); Phosphorylated tau: 25.42 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-normal values in most regions, including the hippocampus (significantly enlarged). The entorhinal cortex is slightly below the reference mean but still within normal range. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE 29) is intact.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:40:47.598455"
}