{
  "ptid_time": "100_S_5280_2013-08-16",
  "img_path": "/data/qiuhui/data/adni/images/100_S_5280/2013-08-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,185 mm³, 10.5% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; hippocampal volume measures 8,297 mm³, 3.4% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; whole brain volume measures 1,165,500 mm³, 2.7% above the reference mean. With a Z-score of 0.39 (65.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,946 mm³, 16.0% above the reference mean. With a Z-score of 1.11 (86.6th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,147 mm³, 1.2% above the reference mean. With a Z-score of 0.10 (54.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,194 mm³, 5.4% below the reference mean. With a Z-score of -0.45 (32.7th percentile), this represents normal volume . ",
  "text_data": "Age is 67.5 years. Gender is Male. Education: 16 years. Handedness: Right. Race: Black or African American. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ); Amyloid beta: 731.80 pg/mL (normal ); Total tau: 101.20 pg/mL (moderate reduced); Phosphorylated tau: 10.08 pg/mL (moderate reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and biomarkers (Aβ normal, T-tau/P-tau reduced) do not suggest Alzheimer's pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:27:26.133457"
}