{
  "ptid_time": "136_S_0579_2008-01-21",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0579/2008-01-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,827 mm³, 24.6% above the reference mean. With a Z-score of 0.62 (73.1th percentile), this represents normal volume ; hippocampal volume measures 7,281 mm³, 5.3% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; whole brain volume measures 1,100,980 mm³, 7.0% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,373 mm³, 12.3% above the reference mean. With a Z-score of 0.96 (83.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,045 mm³, 0.9% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,144 mm³, 12.8% above the reference mean. With a Z-score of 1.14 (87.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 66.9 years. Gender is Female. Education: 18 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges or show mild enlargement, with no significant atrophy. The MMSE score of 28 is within the normal range (≥26), and the APOE4 status (heterozygous) does not strongly indicate elevated risk alone.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T16:02:54.847965"
}