{
  "ptid_time": "016_S_0538_2006-08-02",
  "img_path": "/data/qiuhui/data/adni/images/016_S_0538/2006-08-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 56,351 mm³, 19.9% above the reference mean. With a Z-score of 0.58 (71.8th percentile), this represents normal volume ; hippocampal volume measures 7,992 mm³, 14.7% above the reference mean. With a Z-score of 1.27 (89.8th percentile), this represents mild enlargement; whole brain volume measures 1,091,440 mm³, 6.1% above the reference mean. With a Z-score of 0.79 (78.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,486 mm³, 13.0% above the reference mean. With a Z-score of 0.85 (80.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,374 mm³, 3.8% below the reference mean. With a Z-score of -0.33 (37.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,402 mm³, 6.1% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume . ",
  "text_data": "Age is 82.7 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. The MMSE score of 29/30 is well within the normal range, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T00:02:32.778002"
}