{
  "ptid_time": "941_S_4365_2012-03-13",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4365/2012-03-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 58,076 mm³, 23.5% above the reference mean. With a Z-score of 0.68 (75.3th percentile), this represents normal volume ; hippocampal volume measures 7,223 mm³, 3.7% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume ; whole brain volume measures 1,081,780 mm³, 5.1% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,262 mm³, 7.4% above the reference mean. With a Z-score of 0.48 (68.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,527 mm³, 8.1% above the reference mean. With a Z-score of 0.70 (75.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,923 mm³, 6.2% below the reference mean. With a Z-score of -0.55 (28.9th percentile), this represents normal volume . ",
  "text_data": "Age is 80.3 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.22 SUVR (mild elevated); Amyloid beta: 1264.00 pg/mL (normal ); Total tau: 202.60 pg/mL (normal ); Phosphorylated tau: 17.29 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 29, MoCA 24) are borderline for MCI but not dementia, and biomarkers (Aβ, T-tau, P-tau) are normal despite mild AV45 elevation.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and mild AV45 elevation, but no structural or biomarker evidence of neurodegener",
  "timestamp": "2025-07-26T17:38:05.593269"
}