{
  "ptid_time": "127_S_6549_2020-10-29",
  "img_path": "/data/qiuhui/data/adni/images/127_S_6549/2020-10-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,760 mm³, 45.7% above the reference mean. With a Z-score of 1.09 (86.1th percentile), this represents mild enlargement; hippocampal volume measures 6,225 mm³, 22.5% below the reference mean. With a Z-score of -2.24 (1.2th percentile), this represents significant atrophy; whole brain volume measures 988,465 mm³, 12.9% below the reference mean. With a Z-score of -1.82 (3.4th percentile), this represents moderate atrophy; entorhinal cortex volume measures 3,454 mm³, 19.0% below the reference mean. With a Z-score of -1.31 (9.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,916 mm³, 15.0% below the reference mean. With a Z-score of -1.25 (10.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 15,893 mm³, 29.1% below the reference mean. With a Z-score of -2.40 (0.8th percentile), this represents significant atrophy. ",
  "text_data": "Age is 68.1 years. Gender is Male. Education: 20 years. MMSE: 17.0. APOEε4 alleles: 2.0. Biomarker levels: Flobetaben (FBB): 1.54 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The patient shows significant atrophy in the hippocampus and middle temporal gyrus, along with moderate whole-brain atrophy and mild atrophy in other regions. These findings, combined with a low MMSE score (17) and APOE4 homozygosity, strongly suggest neurodegenerative disease consistent with Alzheimer's pathology.  \nDiagnosis: Dementia (likely Alzheimer's disease)  \nConfidence: High",
  "timestamp": "2025-07-26T13:33:30.353467"
}