{
  "ptid_time": "003_S_4900_2019-11-08",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4900/2019-11-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,872 mm³, 28.9% below the reference mean. With a Z-score of -0.72 (23.4th percentile), this represents normal volume ; hippocampal volume measures 7,163 mm³, 6.8% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume ; whole brain volume measures 978,687 mm³, 4.9% below the reference mean. With a Z-score of -0.61 (27.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,813 mm³, 2.1% below the reference mean. With a Z-score of -0.16 (43.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,383 mm³, 6.4% above the reference mean. With a Z-score of 0.73 (76.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,124 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.2th percentile), this represents normal volume . ",
  "text_data": "Age is 66.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive assessments (MMSE: 30, MoCA: 30) are intact, and amyloid PET (AV45) is normal. No genetic risk (APOE4 negative).  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T20:57:26.492119"
}