{
  "ptid_time": "036_S_0672_2008-08-11",
  "img_path": "/data/qiuhui/data/adni/images/036_S_0672/2008-08-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 7,857 mm³, 64.8% below the reference mean. With a Z-score of -1.62 (5.2th percentile), this represents moderate atrophy; hippocampal volume measures 8,618 mm³, 12.1% above the reference mean. With a Z-score of 1.36 (91.4th percentile), this represents mild enlargement; whole brain volume measures 1,041,920 mm³, 1.2% above the reference mean. With a Z-score of 0.15 (56.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,062 mm³, 4.3% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; fusiform gyrus volume measures 17,645 mm³, 3.1% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,255 mm³, 1.3% below the reference mean. With a Z-score of -0.11 (45.4th percentile), this represents normal volume . ",
  "text_data": "Age is 64.0 years. Gender is Female. Education: 12 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement (indicating possible atrophy) but otherwise normal or even slightly enlarged hippocampal and whole brain volumes. The MMSE score of 30 is optimal, and there are no APOE4 risk alleles. No significant atrophy is seen in key Alzheimer’s-related regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus).  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:03:05.239498"
}