{
  "ptid_time": "116_S_4453_2012-08-09",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4453/2012-08-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,279 mm³, 14.2% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; hippocampal volume measures 7,808 mm³, 2.7% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume ; whole brain volume measures 1,072,300 mm³, 5.5% below the reference mean. With a Z-score of -0.78 (21.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,407 mm³, 3.4% above the reference mean. With a Z-score of 0.23 (59.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,356 mm³, 2.2% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,059 mm³, 15.0% below the reference mean. With a Z-score of -1.23 (10.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 66.4 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with only mild atrophy in the middle temporal gyrus. Cognitive scores (MMSE 29, MoCA 26) are within normal ranges, and there is no APOE4 genetic risk factor. No significant hippocampal or entorhinal cortex atrophy is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:11:16.297848"
}