{
  "ptid_time": "135_S_4723_2012-12-05",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4723/2012-12-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 9,664 mm³, 56.7% below the reference mean. With a Z-score of -1.42 (7.8th percentile), this represents mild atrophy; hippocampal volume measures 7,636 mm³, 0.6% below the reference mean. With a Z-score of -0.07 (47.2th percentile), this represents normal volume ; whole brain volume measures 1,047,430 mm³, 1.8% above the reference mean. With a Z-score of 0.22 (58.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,895 mm³, 0.1% above the reference mean. With a Z-score of 0.00 (50.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,763 mm³, 7.9% below the reference mean. With a Z-score of -0.89 (18.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,260 mm³, 11.0% below the reference mean. With a Z-score of -0.98 (16.4th percentile), this represents normal volume . ",
  "text_data": "Age is 69.9 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal structures. Cognitive scores (MMSE, MoCA) are intact, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:43:21.672628"
}