{
  "ptid_time": "002_S_1280_2015-05-04",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1280/2015-05-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,801 mm³, 1.0% below the reference mean. With a Z-score of -0.02 (49.1th percentile), this represents normal volume ; hippocampal volume measures 6,291 mm³, 11.6% below the reference mean. With a Z-score of -1.06 (14.4th percentile), this represents mild atrophy; whole brain volume measures 934,988 mm³, 4.1% below the reference mean. With a Z-score of -0.51 (30.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,346 mm³, 8.9% below the reference mean. With a Z-score of -0.55 (29.2th percentile), this represents normal volume ; fusiform gyrus volume measures 15,476 mm³, 9.0% below the reference mean. With a Z-score of -0.82 (20.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,890 mm³, 11.9% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.7 years. Gender is Female. Education: 14 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and middle temporal gyrus volumes show mild atrophy (Z-scores -1.06 and -1.03, respectively), which are early indicators of neurodegeneration. However, cognitive scores (MMSE 28, MoCA 26) remain within normal limits, suggesting no significant functional impairment.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to structural changes without overt cognitive decline, but APOE4 and age increase risk of progression)",
  "timestamp": "2025-07-25T20:17:24.305072"
}