{
  "ptid_time": "137_S_0158_2007-03-28",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0158/2007-03-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,656 mm³, 63.1% below the reference mean. With a Z-score of -1.70 (4.4th percentile), this represents moderate atrophy; hippocampal volume measures 6,030 mm³, 7.2% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume ; whole brain volume measures 858,788 mm³, 7.5% below the reference mean. With a Z-score of -0.90 (18.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,449 mm³, 0.4% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; fusiform gyrus volume measures 15,381 mm³, 4.5% below the reference mean. With a Z-score of -0.34 (36.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,171 mm³, 10.3% below the reference mean. With a Z-score of -0.92 (18.0th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Female. Education: 13 years. MMSE: 29.0. Logical Memory: 5.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate atrophy (Z-score -1.70), but hippocampal, whole brain, and other regional volumes are within normal ranges (Z-scores between -0.02 and -0.92). The MMSE score of 29 is normal, and there is no APOE4 genetic risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (ventricular atrophy could suggest early changes, but other markers and cognitive performance remain intact)",
  "timestamp": "2025-07-26T16:07:06.477651"
}