{
  "ptid_time": "130_S_1200_2008-01-22",
  "img_path": "/data/qiuhui/data/adni/images/130_S_1200/2008-01-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 62,691 mm³, 33.3% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume ; hippocampal volume measures 7,496 mm³, 7.6% above the reference mean. With a Z-score of 0.65 (74.4th percentile), this represents normal volume ; whole brain volume measures 1,115,810 mm³, 8.4% above the reference mean. With a Z-score of 1.10 (86.5th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,912 mm³, 1.4% below the reference mean. With a Z-score of -0.09 (46.3th percentile), this represents normal volume ; fusiform gyrus volume measures 20,834 mm³, 15.3% above the reference mean. With a Z-score of 1.33 (90.8th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,811 mm³, 1.8% below the reference mean. With a Z-score of -0.16 (43.6th percentile), this represents normal volume . ",
  "text_data": "Age is 85.4 years. Gender is Male. Education: 16 years. Handedness: Unknown. Race: Unknown. MMSE: 27.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1285.00 pg/mL (normal ); Total tau: 182.30 pg/mL (normal ); Phosphorylated tau: 17.39 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or mildly enlarged, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE 27) is intact for age.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:34:28.747351"
}