{
  "ptid_time": "007_S_4516_2013-03-13",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4516/2013-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,926 mm³, 11.9% below the reference mean. With a Z-score of -0.29 (38.8th percentile), this represents normal volume ; hippocampal volume measures 7,759 mm³, 2.6% above the reference mean. With a Z-score of 0.26 (60.2th percentile), this represents normal volume ; whole brain volume measures 1,093,740 mm³, 1.3% above the reference mean. With a Z-score of 0.17 (56.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,092 mm³, 0.2% below the reference mean. With a Z-score of -0.01 (49.4th percentile), this represents normal volume ; fusiform gyrus volume measures 23,498 mm³, 24.7% above the reference mean. With a Z-score of 2.11 (98.2th percentile), this represents significant enlargement; middle temporal gyrus volume measures 22,983 mm³, 7.7% above the reference mean. With a Z-score of 0.69 (75.6th percentile), this represents normal volume . ",
  "text_data": "Age is 72.4 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 16.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or even above average (fusiform gyrus). Cognitive scores (MMSE 29, MoCA 26) are also within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:02:42.385091"
}