{
  "ptid_time": "137_S_0443_2009-08-12",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0443/2009-08-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 7,352 mm³, 75.5% below the reference mean. With a Z-score of -1.79 (3.6th percentile), this represents moderate atrophy; hippocampal volume measures 7,763 mm³, 3.3% below the reference mean. With a Z-score of -0.33 (37.1th percentile), this represents normal volume ; whole brain volume measures 1,061,330 mm³, 6.5% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,795 mm³, 11.0% below the reference mean. With a Z-score of -0.76 (22.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,094 mm³, 9.1% below the reference mean. With a Z-score of -0.76 (22.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,435 mm³, 4.6% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume . ",
  "text_data": "Age is 66.0 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy, but all other brain regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges. The MMSE score is perfect (30/30), and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T16:10:33.226076"
}