{
  "ptid_time": "011_S_4120_2013-07-25",
  "img_path": "/data/qiuhui/data/adni/images/011_S_4120/2013-07-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,787 mm³, 4.9% above the reference mean. With a Z-score of 0.13 (55.3th percentile), this represents normal volume ; hippocampal volume measures 6,596 mm³, 1.6% above the reference mean. With a Z-score of 0.12 (55.0th percentile), this represents normal volume ; whole brain volume measures 954,683 mm³, 2.9% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,220 mm³, 7.0% below the reference mean. With a Z-score of -0.38 (35.3th percentile), this represents normal volume ; fusiform gyrus volume measures 16,849 mm³, 4.6% above the reference mean. With a Z-score of 0.34 (63.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,540 mm³, 2.7% below the reference mean. With a Z-score of -0.24 (40.5th percentile), this represents normal volume . ",
  "text_data": "Age is 83.8 years. Gender is Female. Education: 17 years. MMSE: 27.0. MoCA: 22.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.40 SUVR (significant elevated); Amyloid beta: 624.80 pg/mL (mild reduced); Total tau: 273.60 pg/mL (normal ); Phosphorylated tau: 28.71 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild reductions in the entorhinal cortex and middle temporal gyrus. Cognitive testing shows a borderline MoCA score (22/30) but a normal MMSE (27/30). Biomarkers indicate mildly reduced Aβ and significantly elevated AV45 (suggesting amyloid pathology), but normal tau levels.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to borderline MoCA and amyloid pathology, but preserved MMSE and mostly normal brain volumes)",
  "timestamp": "2025-07-25T22:54:54.423875"
}