{
  "ptid_time": "027_S_0403_2007-05-14",
  "img_path": "/data/qiuhui/data/adni/images/027_S_0403/2007-05-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,215 mm³, 19.0% below the reference mean. With a Z-score of -0.45 (32.5th percentile), this represents normal volume ; hippocampal volume measures 7,383 mm³, 2.3% below the reference mean. With a Z-score of -0.23 (41.0th percentile), this represents normal volume ; whole brain volume measures 1,025,490 mm³, 5.0% below the reference mean. With a Z-score of -0.65 (25.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,341 mm³, 5.9% above the reference mean. With a Z-score of 0.40 (65.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,514 mm³, 1.7% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,343 mm³, 14.0% below the reference mean. With a Z-score of -1.26 (10.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 77.3 years. Gender is Male. Education: 16 years. MMSE: 26.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 336.20 pg/mL (moderate reduced); Total tau: 359.20 pg/mL (moderate elevated); Phosphorylated tau: 39.69 pg/mL (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mostly normal values, with only mild atrophy in the middle temporal gyrus. The MMSE score of 26 is slightly below normal but not indicative of severe impairment. However, the biomarker profile (moderately reduced Aβ, moderately elevated T-tau, and significantly elevated P-tau) suggests underlying Alzheimer's pathology.  \n\nDiagnosis: MCI (Mild Cognitive Impairment)  \nConfidence: Medium",
  "timestamp": "2025-07-26T03:35:01.080600"
}