{
  "ptid_time": "035_S_4785_2015-08-19",
  "img_path": "/data/qiuhui/data/adni/images/035_S_4785/2015-08-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,254 mm³, 0.4% below the reference mean. With a Z-score of -0.01 (49.6th percentile), this represents normal volume ; hippocampal volume measures 6,449 mm³, 16.1% below the reference mean. With a Z-score of -1.80 (3.6th percentile), this represents moderate atrophy; whole brain volume measures 1,030,290 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,623 mm³, 6.9% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; fusiform gyrus volume measures 16,453 mm³, 9.6% below the reference mean. With a Z-score of -1.09 (13.9th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,710 mm³, 0.9% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume . ",
  "text_data": "Age is 68.7 years. Gender is Female. Education: 13 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows moderate atrophy (Z-score -1.80, 3.6th percentile), which is a strong biomarker for Alzheimer's pathology. The fusiform gyrus also shows mild atrophy, further supporting neurodegenerative changes. However, cognitive scores (MMSE 29, MoCA 26) are within normal limits, and there is no APOE4 risk allele.  \n\nDiagnosis: **Mild Cognitive Impairment (MCI)**  \nConfidence: **Medium** (Cognitive scores are borderline, but hippocampal atrophy suggests early neurodegeneration.)",
  "timestamp": "2025-07-26T05:59:08.985513"
}