{
  "ptid_time": "029_S_1073_2007-06-22",
  "img_path": "/data/qiuhui/data/adni/images/029_S_1073/2007-06-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,439 mm³, 8.5% below the reference mean. With a Z-score of -0.21 (41.6th percentile), this represents normal volume ; hippocampal volume measures 5,773 mm³, 24.9% below the reference mean. With a Z-score of -2.79 (0.3th percentile), this represents significant atrophy; whole brain volume measures 919,766 mm³, 10.6% below the reference mean. With a Z-score of -1.32 (9.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,881 mm³, 26.0% below the reference mean. With a Z-score of -2.01 (2.2th percentile), this represents significant atrophy; fusiform gyrus volume measures 14,538 mm³, 20.2% below the reference mean. With a Z-score of -2.27 (1.2th percentile), this represents significant atrophy; middle temporal gyrus volume measures 17,004 mm³, 17.1% below the reference mean. With a Z-score of -1.52 (6.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 66.2 years. Gender is Female. Education: 18 years. MMSE: 26.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in the hippocampus, entorhinal cortex, and fusiform gyrus—key regions affected in Alzheimer's disease. The MMSE score of 26 is borderline, but the structural changes strongly suggest neurodegeneration.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T04:21:41.767060"
}