{
  "ptid_time": "010_S_0829_2008-03-11",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0829/2008-03-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,096 mm³, 1.1% below the reference mean. With a Z-score of -0.03 (48.9th percentile), this represents normal volume ; hippocampal volume measures 4,402 mm³, 42.7% below the reference mean. With a Z-score of -4.79 (0.0th percentile), this represents profound atrophy; whole brain volume measures 841,864 mm³, 18.2% below the reference mean. With a Z-score of -2.27 (1.2th percentile), this represents significant atrophy; entorhinal cortex volume measures 2,054 mm³, 47.2% below the reference mean. With a Z-score of -3.66 (0.0th percentile), this represents profound atrophy; fusiform gyrus volume measures 13,723 mm³, 24.6% below the reference mean. With a Z-score of -2.77 (0.3th percentile), this represents significant atrophy; middle temporal gyrus volume measures 13,381 mm³, 34.8% below the reference mean. With a Z-score of -3.09 (0.1th percentile), this represents profound atrophy. ",
  "text_data": "Age is 65.9 years. Gender is Female. Education: 15 years. MMSE: 26.0. Logical Memory: 0.0. Laboratory findings: . APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound atrophy in the hippocampus, entorhinal cortex, and middle temporal gyrus—key regions affected in Alzheimer's disease. The MMSE score of 26 is borderline, but the severe atrophy and APOE4 homozygosity strongly suggest neurodegeneration.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T22:34:01.383271"
}