{
  "ptid_time": "153_S_5261_2013-07-25",
  "img_path": "/data/qiuhui/data/adni/images/153_S_5261/2013-07-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,476 mm³, 12.8% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; hippocampal volume measures 7,003 mm³, 1.6% below the reference mean. With a Z-score of -0.14 (44.3th percentile), this represents normal volume ; whole brain volume measures 1,029,490 mm³, 5.6% above the reference mean. With a Z-score of 0.71 (76.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,999 mm³, 8.9% above the reference mean. With a Z-score of 0.54 (70.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,313 mm³, 4.1% below the reference mean. With a Z-score of -0.37 (35.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,736 mm³, 7.5% below the reference mean. With a Z-score of -0.65 (25.8th percentile), this represents normal volume . ",
  "text_data": "Age is 78.1 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal. MMSE: 30.0. MoCA: 26.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.33 SUVR (moderate elevated); Amyloid beta: 568.50 pg/mL (mild reduced); Total tau: 196.40 pg/mL (normal ); Phosphorylated tau: 19.03 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 30, MoCA 26) are normal, though MoCA is borderline. Biomarkers show mild Aβ reduction and moderate AV45 elevation, suggesting early amyloid pathology, but tau markers are normal.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline MoCA and amyloid findings, but no significant structural or cognitive impairment)",
  "timestamp": "2025-07-26T17:16:10.956508"
}