{
  "ptid_time": "035_S_4783_2012-07-02",
  "img_path": "/data/qiuhui/data/adni/images/035_S_4783/2012-07-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,168 mm³, 42.2% below the reference mean. With a Z-score of -1.23 (11.0th percentile), this represents mild atrophy; hippocampal volume measures 5,444 mm³, 21.9% below the reference mean. With a Z-score of -1.89 (2.9th percentile), this represents moderate atrophy; whole brain volume measures 1,005,120 mm³, 2.3% below the reference mean. With a Z-score of -0.31 (38.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,421 mm³, 13.8% below the reference mean. With a Z-score of -0.90 (18.3th percentile), this represents normal volume ; fusiform gyrus volume measures 19,382 mm³, 7.3% above the reference mean. With a Z-score of 0.63 (73.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,928 mm³, 11.1% below the reference mean. With a Z-score of -1.00 (15.9th percentile), this represents normal volume . ",
  "text_data": "Age is 83.2 years. Gender is Male. Education: 20 years. MMSE: 24.0. MoCA: 22.0. Logical Memory: 2.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.50 SUVR (profound elevated); Amyloid beta: 596.30 pg/mL (mild reduced); Total tau: 221.70 pg/mL (normal ); Phosphorylated tau: 22.07 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The imaging shows mild to moderate atrophy in the hippocampus and ventricles, which are key regions affected in Alzheimer's disease. The MMSE and MoCA scores indicate mild cognitive impairment, and the elevated AV45 (amyloid PET) with mildly reduced Aβ supports Alzheimer's pathology.  \nDiagnosis: Dementia (likely Alzheimer’s disease)  \nConfidence: High",
  "timestamp": "2025-07-26T05:58:10.211741"
}