{
  "ptid_time": "003_S_4644_2012-12-18",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4644/2012-12-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,200 mm³, 5.1% below the reference mean. With a Z-score of -0.13 (44.9th percentile), this represents normal volume ; hippocampal volume measures 7,706 mm³, 0.3% above the reference mean. With a Z-score of 0.03 (51.3th percentile), this represents normal volume ; whole brain volume measures 1,006,620 mm³, 2.2% below the reference mean. With a Z-score of -0.27 (39.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,172 mm³, 7.2% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,041 mm³, 6.4% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,978 mm³, 2.2% above the reference mean. With a Z-score of 0.20 (57.9th percentile), this represents normal volume . ",
  "text_data": "Age is 68.1 years. Gender is Female. Education: 14 years. MMSE: 27.0. MoCA: 30.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 27, MoCA 30) are also within normal limits for age. The presence of one APOE4 allele does not override the absence of structural or cognitive deficits.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T20:55:14.683262"
}