{
  "ptid_time": "941_S_6514_2018-07-24",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6514/2018-07-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,620 mm³, 23.0% below the reference mean. With a Z-score of -0.53 (29.9th percentile), this represents normal volume ; hippocampal volume measures 7,085 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.5th percentile), this represents normal volume ; whole brain volume measures 992,635 mm³, 1.8% above the reference mean. With a Z-score of 0.23 (59.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,604 mm³, 1.9% below the reference mean. With a Z-score of -0.12 (45.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,945 mm³, 11.4% above the reference mean. With a Z-score of 1.03 (84.9th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,058 mm³, 5.8% below the reference mean. With a Z-score of -0.50 (30.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.1 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 28.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges, with only mild enlargement in the fusiform gyrus. Cognitive scores (MMSE 30, MoCA 28) are intact, and there is no APOE4 genetic risk factor. No structural or clinical evidence of impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:49:06.662599"
}