{
  "ptid_time": "020_S_6504_2018-07-26",
  "img_path": "/data/qiuhui/data/adni/images/020_S_6504/2018-07-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,182 mm³, 2.8% below the reference mean. With a Z-score of -0.07 (47.3th percentile), this represents normal volume ; hippocampal volume measures 8,523 mm³, 6.2% above the reference mean. With a Z-score of 0.62 (73.1th percentile), this represents normal volume ; whole brain volume measures 1,248,270 mm³, 10.0% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,663 mm³, 32.8% above the reference mean. With a Z-score of 2.27 (98.8th percentile), this represents significant enlargement; fusiform gyrus volume measures 20,305 mm³, 2.0% above the reference mean. With a Z-score of 0.17 (56.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,271 mm³, 17.2% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 68.8 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.99 SUVR (normal ). ",
  "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 even enlarged compared to reference means. Cognitive scores (MMSE 30, MoCA 28) are intact, and there is no APOE4 genetic risk factor. No structural or functional deficits suggestive of neurodegeneration are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:19:06.252262"
}