{
  "ptid_time": "127_S_6436_2019-08-09",
  "img_path": "/data/qiuhui/data/adni/images/127_S_6436/2019-08-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,817 mm³, 41.9% above the reference mean. With a Z-score of 0.96 (83.1th percentile), this represents normal volume ; hippocampal volume measures 6,838 mm³, 3.9% below the reference mean. With a Z-score of -0.36 (36.1th percentile), this represents normal volume ; whole brain volume measures 989,197 mm³, 1.5% above the reference mean. With a Z-score of 0.19 (57.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,252 mm³, 15.8% above the reference mean. With a Z-score of 0.97 (83.3th percentile), this represents normal volume ; fusiform gyrus volume measures 16,664 mm³, 2.1% below the reference mean. With a Z-score of -0.19 (42.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,516 mm³, 3.4% below the reference mean. With a Z-score of -0.30 (38.4th percentile), this represents normal volume . ",
  "text_data": "Age is 70.8 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE and MoCA) are both at the maximum (30/30), indicating no cognitive impairment. APOE4 status (heterozygous) is a risk factor but does not indicate current pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:32:36.836151"
}