{
  "ptid_time": "135_S_4723_2019-06-25",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4723/2019-06-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,712 mm³, 51.1% below the reference mean. With a Z-score of -1.17 (12.1th percentile), this represents mild atrophy; hippocampal volume measures 7,269 mm³, 2.2% above the reference mean. With a Z-score of 0.20 (57.9th percentile), this represents normal volume ; whole brain volume measures 1,000,050 mm³, 2.6% above the reference mean. With a Z-score of 0.33 (62.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,199 mm³, 14.3% above the reference mean. With a Z-score of 0.88 (81.0th percentile), this represents normal volume ; fusiform gyrus volume measures 15,980 mm³, 6.1% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,781 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (43.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, etc.). Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:46:08.164919"
}