{
  "ptid_time": "073_S_0089_2007-02-07",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0089/2007-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,680 mm³, 27.8% below the reference mean. With a Z-score of -0.66 (25.4th percentile), this represents normal volume ; hippocampal volume measures 7,723 mm³, 3.8% below the reference mean. With a Z-score of -0.38 (35.2th percentile), this represents normal volume ; whole brain volume measures 1,084,360 mm³, 4.4% below the reference mean. With a Z-score of -0.63 (26.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,244 mm³, 0.4% below the reference mean. With a Z-score of -0.03 (48.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,400 mm³, 7.5% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,545 mm³, 5.1% above the reference mean. With a Z-score of 0.42 (66.2th percentile), this represents normal volume . ",
  "text_data": "Age is 66.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 1306.00 pg/mL (normal ); Total tau: 170.20 pg/mL (normal ); Phosphorylated tau: 15.52 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Biomarkers (Aβ, T-tau, P-tau) are normal, and cognitive performance (MMSE = 30) is intact. No significant atrophy or pathological markers are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:28:24.691342"
}