{
  "ptid_time": "135_S_5269_2015-09-02",
  "img_path": "/data/qiuhui/data/adni/images/135_S_5269/2015-09-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,975 mm³, 33.5% below the reference mean. With a Z-score of -0.80 (21.3th percentile), this represents normal volume ; hippocampal volume measures 9,516 mm³, 18.5% above the reference mean. With a Z-score of 1.85 (96.8th percentile), this represents moderate enlargement; whole brain volume measures 1,147,730 mm³, 1.2% above the reference mean. With a Z-score of 0.16 (56.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,216 mm³, 1.1% below the reference mean. With a Z-score of -0.08 (47.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,494 mm³, 2.9% above the reference mean. With a Z-score of 0.24 (59.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,025 mm³, 2.7% above the reference mean. With a Z-score of 0.23 (58.9th percentile), this represents normal volume . ",
  "text_data": "Age is 66.9 years. Gender is Male. Education: 16 years. MMSE: 27.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average values in all regions, including the hippocampus (moderate enlargement). Cognitive scores (MMSE and MoCA) are within the normal range (27/30), and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:48:24.081893"
}