{
  "ptid_time": "135_S_6446_2018-06-21",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6446/2018-06-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,230 mm³, 39.3% below the reference mean. With a Z-score of -0.93 (17.5th percentile), this represents normal volume ; hippocampal volume measures 7,638 mm³, 4.8% below the reference mean. With a Z-score of -0.48 (31.4th percentile), this represents normal volume ; whole brain volume measures 1,058,390 mm³, 6.7% below the reference mean. With a Z-score of -0.95 (17.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,624 mm³, 15.0% below the reference mean. With a Z-score of -1.04 (15.0th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,714 mm³, 16.0% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 22,550 mm³, 0.6% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume . ",
  "text_data": "Age is 61.5 years. Gender is Male. Education: 12 years. Handedness: Left. Race: White. MMSE: 27.0. MoCA: 27.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show mild atrophy in the entorhinal cortex and fusiform gyrus, which are regions often affected in early Alzheimer's disease. However, hippocampal and whole brain volumes are within normal ranges, and cognitive scores (MMSE, MoCA) are intact, with no APOE4 risk allele present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy in key regions raises some concern, but cognitive performance and lack of APOE4 suggest no significant impairment).",
  "timestamp": "2025-07-26T15:51:29.016431"
}