{
  "ptid_time": "031_S_2018_2011-01-31",
  "img_path": "/data/qiuhui/data/adni/images/031_S_2018/2011-01-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,444 mm³, 61.9% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement; hippocampal volume measures 7,640 mm³, 7.4% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; whole brain volume measures 989,945 mm³, 1.6% above the reference mean. With a Z-score of 0.20 (57.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,062 mm³, 10.6% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; fusiform gyrus volume measures 15,946 mm³, 6.3% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,350 mm³, 0.9% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume . ",
  "text_data": "Age is 76.9 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, etc.). Cognitive scores (MMSE 29, MoCA 27) are within normal ranges for age, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T04:41:13.795262"
}