{
  "ptid_time": "021_S_0343_2006-04-06",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0343/2006-04-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,544 mm³, 67.6% above the reference mean. With a Z-score of 1.62 (94.7th percentile), this represents moderate enlargement; hippocampal volume measures 5,337 mm³, 29.4% below the reference mean. With a Z-score of -2.87 (0.2th percentile), this represents significant atrophy; whole brain volume measures 1,002,330 mm³, 7.1% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,622 mm³, 11.7% below the reference mean. With a Z-score of -0.79 (21.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,183 mm³, 8.8% below the reference mean. With a Z-score of -0.75 (22.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,360 mm³, 18.6% below the reference mean. With a Z-score of -1.68 (4.7th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 71.8 years. Gender is Male. Education: 12 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Endocrine-Metabolic. MMSE: 22.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows significant hippocampal atrophy (Z-score -2.87, 0.2th percentile) and moderate ventricular enlargement, both strong indicators of neurodegeneration. The MMSE score of 22 suggests cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T01:30:34.925850"
}