{
  "ptid_time": "013_S_0502_2007-03-01",
  "img_path": "/data/qiuhui/data/adni/images/013_S_0502/2007-03-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,603 mm³, 38.7% below the reference mean. With a Z-score of -0.93 (17.7th percentile), this represents normal volume ; hippocampal volume measures 7,335 mm³, 3.0% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume ; whole brain volume measures 1,111,140 mm³, 2.9% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,281 mm³, 20.0% below the reference mean. With a Z-score of -1.36 (8.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,777 mm³, 5.6% below the reference mean. With a Z-score of -0.48 (31.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,844 mm³, 7.0% below the reference mean. With a Z-score of -0.63 (26.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.4 years. Gender is Male. Education: 18 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mostly normal measurements, with only mild atrophy in the entorhinal cortex (Z-score -1.36, 8.8th percentile). The MMSE score of 30 is perfect, and there is no APOE4 risk allele. No significant cognitive impairment is indicated.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T23:21:24.939185"
}