{
  "ptid_time": "126_S_2405_2015-10-14",
  "img_path": "/data/qiuhui/data/adni/images/126_S_2405/2015-10-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,913 mm³, 13.7% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; hippocampal volume measures 7,013 mm³, 1.4% below the reference mean. With a Z-score of -0.13 (44.8th percentile), this represents normal volume ; whole brain volume measures 954,718 mm³, 2.0% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,135 mm³, 14.6% below the reference mean. With a Z-score of -0.90 (18.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,093 mm³, 12.2% above the reference mean. With a Z-score of 1.11 (86.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 18,675 mm³, 2.6% below the reference mean. With a Z-score of -0.22 (41.1th percentile), this represents normal volume . ",
  "text_data": "Age is 75.6 years. Gender is Female. Education: 13 years. MMSE: 25.0. MoCA: 27.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., entorhinal cortex slightly below mean but still normal, fusiform gyrus mildly enlarged). Cognitive scores (MMSE 25, MoCA 27) are borderline for MCI but still within normal limits for age. No APOE4 risk alleles or abnormal amyloid (AV45 normal) further reduce Alzheimer's likelihood.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline cognitive scores but otherwise unremarkable biomarkers)",
  "timestamp": "2025-07-26T12:44:33.190867"
}