{
  "ptid_time": "011_S_4075_2011-12-14",
  "img_path": "/data/qiuhui/data/adni/images/011_S_4075/2011-12-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,226 mm³, 21.5% below the reference mean. With a Z-score of -0.52 (30.3th percentile), this represents normal volume ; hippocampal volume measures 7,163 mm³, 5.2% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; whole brain volume measures 1,098,660 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 4,881 mm³, 19.0% above the reference mean. With a Z-score of 1.29 (90.2th percentile), this represents mild enlargement; fusiform gyrus volume measures 19,365 mm³, 2.8% above the reference mean. With a Z-score of 0.24 (59.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,970 mm³, 1.7% below the reference mean. With a Z-score of -0.16 (43.8th percentile), this represents normal volume . ",
  "text_data": "Age is 73.9 years. Gender is Male. Education: 16 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges, with the entorhinal cortex showing mild enlargement. Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and APOE4 status (heterozygous) does not strongly indicate immediate risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to normal imaging and cognitive scores, but mild MoCA reduction could warrant monitoring)",
  "timestamp": "2025-07-25T22:52:57.335440"
}