{
  "ptid_time": "128_S_0205_2007-09-05",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0205/2007-09-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,220 mm³, 21.9% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; hippocampal volume measures 7,915 mm³, 3.0% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; whole brain volume measures 1,180,240 mm³, 14.7% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,353 mm³, 11.8% above the reference mean. With a Z-score of 0.92 (82.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,146 mm³, 5.1% above the reference mean. With a Z-score of 0.58 (71.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,271 mm³, 3.7% above the reference mean. With a Z-score of 0.33 (62.8th percentile), this represents normal volume . ",
  "text_data": "Age is 68.0 years. Gender is Female. Education: 18 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or even slightly above the reference mean. The MMSE score of 30 is optimal, and there is no APOE4 risk allele. No structural or cognitive indicators of impairment are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:37:07.837135"
}