{
  "ptid_time": "033_S_5013_2013-06-07",
  "img_path": "/data/qiuhui/data/adni/images/033_S_5013/2013-06-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,948 mm³, 25.1% above the reference mean. With a Z-score of 0.63 (73.5th percentile), this represents normal volume ; hippocampal volume measures 6,655 mm³, 13.4% below the reference mean. With a Z-score of -1.50 (6.6th percentile), this represents moderate atrophy; whole brain volume measures 1,025,720 mm³, 0.3% below the reference mean. With a Z-score of -0.04 (48.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,167 mm³, 18.6% below the reference mean. With a Z-score of -1.45 (7.4th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,647 mm³, 14.1% below the reference mean. With a Z-score of -1.58 (5.6th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 21,386 mm³, 4.2% above the reference mean. With a Z-score of 0.38 (64.6th percentile), this represents normal volume . ",
  "text_data": "Age is 68.8 years. Gender is Female. Education: 18 years. MMSE: 23.0. MoCA: 22.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate hippocampal atrophy and mild-to-moderate atrophy in the entorhinal cortex and fusiform gyrus, which are key regions affected in Alzheimer's disease. Cognitive testing (MMSE 23, MoCA 22) indicates mild impairment, but the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to structural atrophy but no APOE4 and only mild cognitive decline)",
  "timestamp": "2025-07-26T05:37:30.825358"
}