{
  "ptid_time": "029_S_1038_2006-11-21",
  "img_path": "/data/qiuhui/data/adni/images/029_S_1038/2006-11-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,547 mm³, 20.1% below the reference mean. With a Z-score of -0.58 (27.9th percentile), this represents normal volume ; hippocampal volume measures 6,217 mm³, 10.8% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume ; whole brain volume measures 1,020,360 mm³, 0.9% below the reference mean. With a Z-score of -0.11 (45.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,668 mm³, 7.6% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,239 mm³, 4.6% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,679 mm³, 12.4% below the reference mean. With a Z-score of -1.11 (13.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 83.2 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Allergies or Drug Sensitivities. MMSE: 24.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with only mild atrophy noted in the middle temporal gyrus. The MMSE score of 24 is slightly below the typical cutoff of 26 for cognitive normality but is not strongly indicative of dementia. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (due to borderline MMSE and mild temporal atrophy, but other volumes are normal)",
  "timestamp": "2025-07-26T04:21:05.295900"
}