{
  "ptid_time": "127_S_5266_2013-07-30",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5266/2013-07-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,686 mm³, 12.2% above the reference mean. With a Z-score of 0.29 (61.4th percentile), this represents normal volume ; hippocampal volume measures 9,192 mm³, 14.5% above the reference mean. With a Z-score of 1.45 (92.7th percentile), this represents mild enlargement; whole brain volume measures 1,114,540 mm³, 1.8% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,766 mm³, 11.8% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; fusiform gyrus volume measures 19,814 mm³, 0.5% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,400 mm³, 0.1% below the reference mean. With a Z-score of -0.00 (49.8th percentile), this represents normal volume . ",
  "text_data": "Age is 65.9 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Dermatologic-Connective Tissue; Musculoskeletal; Allergies or Drug Sensitivities; Malignancy; Major Surgical Procedures. MMSE: 28.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ); Total tau: 279.90 pg/mL (normal ); Phosphorylated tau: 24.28 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with mild hippocampal enlargement (Z-score 1.45, 92.7th percentile) but no significant atrophy in Alzheimer’s-related regions. Cognitive scores (MMSE 28, MoCA 26) are normal, and biomarkers (T-tau, P-tau, AV45) are unremarkable. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:29:05.759039"
}