{
  "ptid_time": "094_S_1314_2009-03-23",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1314/2009-03-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,235 mm³, 58.8% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; hippocampal volume measures 6,686 mm³, 2.9% above the reference mean. With a Z-score of 0.24 (59.3th percentile), this represents normal volume ; whole brain volume measures 953,860 mm³, 2.8% above the reference mean. With a Z-score of 0.33 (63.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,302 mm³, 4.6% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; fusiform gyrus volume measures 15,630 mm³, 3.0% below the reference mean. With a Z-score of -0.22 (41.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,018 mm³, 11.2% below the reference mean. With a Z-score of -0.99 (16.0th percentile), this represents normal volume . ",
  "text_data": "Age is 82.7 years. Gender is Female. Education: 16 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy (Z-score -1.59), but hippocampal, whole brain, and other regional volumes are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular enlargement could suggest early changes, but other markers and cognitive performance support normal cognition)",
  "timestamp": "2025-07-26T10:22:19.907752"
}