{
  "ptid_time": "036_S_0759_2008-09-10",
  "img_path": "/data/qiuhui/data/adni/images/036_S_0759/2008-09-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,960 mm³, 35.2% above the reference mean. With a Z-score of 0.95 (82.9th percentile), this represents normal volume ; hippocampal volume measures 4,284 mm³, 34.0% below the reference mean. With a Z-score of -2.73 (0.3th percentile), this represents significant atrophy; whole brain volume measures 809,947 mm³, 12.7% below the reference mean. With a Z-score of -1.53 (6.3th percentile), this represents moderate atrophy; entorhinal cortex volume measures 1,512 mm³, 56.3% below the reference mean. With a Z-score of -3.04 (0.1th percentile), this represents profound atrophy; fusiform gyrus volume measures 12,538 mm³, 22.2% below the reference mean. With a Z-score of -1.67 (4.8th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 16,035 mm³, 11.1% below the reference mean. With a Z-score of -0.98 (16.2th percentile), this represents normal volume . ",
  "text_data": "Age is 83.8 years. Gender is Female. Education: 12 years. MMSE: 18.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient exhibits significant atrophy in the hippocampus and entorhinal cortex (both below the 1st percentile), along with moderate whole-brain and fusiform gyrus atrophy. These findings, combined with a low MMSE score (18/30) and APOE4 positivity, strongly suggest neurodegenerative pathology consistent with Alzheimer's disease.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T06:04:56.716742"
}