{
  "ptid_time": "035_S_6551_2018-08-15",
  "img_path": "/data/qiuhui/data/adni/images/035_S_6551/2018-08-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,704 mm³, 2.3% above the reference mean. With a Z-score of 0.05 (52.1th percentile), this represents normal volume ; hippocampal volume measures 7,837 mm³, 10.2% above the reference mean. With a Z-score of 0.93 (82.4th percentile), this represents normal volume ; whole brain volume measures 1,047,030 mm³, 7.4% above the reference mean. With a Z-score of 0.93 (82.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,075 mm³, 10.9% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume ; fusiform gyrus volume measures 16,170 mm³, 5.0% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,949 mm³, 14.5% above the reference mean. With a Z-score of 1.26 (89.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.8 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 23.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.70 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges or even above average, with only the fusiform gyrus slightly below the mean but still within normal limits. The MMSE score of 30 is perfect, but the MoCA score of 23 suggests mild cognitive impairment (MCI), supported by the presence of one APOE4 allele and profoundly elevated AV45 (indicating amyloid pathology).  \nDiagnosis: **MCI**  \nConfidence: **Medium** (due to conflicting MMSE/MoCA scores but strong biomarker evidence)",
  "timestamp": "2025-07-26T06:00:21.213043"
}