{
  "ptid_time": "006_S_4449_2012-07-30",
  "img_path": "/data/qiuhui/data/adni/images/006_S_4449/2012-07-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,921 mm³, 34.0% above the reference mean. With a Z-score of 0.85 (80.2th percentile), this represents normal volume ; hippocampal volume measures 8,908 mm³, 15.9% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement; whole brain volume measures 1,234,600 mm³, 20.0% above the reference mean. With a Z-score of 2.49 (99.4th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,411 mm³, 12.4% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,687 mm³, 2.6% above the reference mean. With a Z-score of 0.29 (61.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,080 mm³, 7.6% above the reference mean. With a Z-score of 0.68 (75.0th percentile), this represents normal volume . ",
  "text_data": "Age is 67.4 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes show significant enlargement in whole brain and hippocampal volumes, with normal or above-average volumes in most regions except the entorhinal cortex, which is slightly below average. Cognitive scores (MMSE 30, MoCA 28) are within normal ranges, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:38:11.625265"
}