{
  "ptid_time": "135_S_4446_2014-01-27",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4446/2014-01-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,313 mm³, 38.3% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; hippocampal volume measures 7,212 mm³, 1.4% above the reference mean. With a Z-score of 0.13 (55.0th percentile), this represents normal volume ; whole brain volume measures 977,364 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,194 mm³, 14.2% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,575 mm³, 26.8% above the reference mean. With a Z-score of 2.44 (99.3th percentile), this represents significant enlargement; middle temporal gyrus volume measures 18,017 mm³, 6.0% below the reference mean. With a Z-score of -0.52 (30.1th percentile), this represents normal volume . ",
  "text_data": "Age is 70.4 years. Gender is Female. Education: 15 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or even above average, with only the fusiform gyrus showing significant enlargement (likely incidental). Cognitive scores (MMSE 29, MoCA 26) are normal for age, and amyloid PET (AV45) is negative. No APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:36:19.803059"
}