{
  "ptid_time": "073_S_4739_2012-11-14",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4739/2012-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,400 mm³, 27.9% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume ; hippocampal volume measures 7,795 mm³, 2.9% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume ; whole brain volume measures 1,105,280 mm³, 2.6% below the reference mean. With a Z-score of -0.36 (35.8th 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 17,277 mm³, 13.2% below the reference mean. With a Z-score of -1.10 (13.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,221 mm³, 9.8% below the reference mean. With a Z-score of -0.81 (21.0th percentile), this represents normal volume . ",
  "text_data": "Age is 65.7 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 27.0. 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 fusiform gyrus (Z-score -1.10, 13.6th percentile). Cognitive scores (MMSE 29, MoCA 27) are within normal ranges, and there is no APOE4 genetic risk factor. No significant hippocampal or entorhinal cortex atrophy is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:51:09.815789"
}