{
  "ptid_time": "135_S_6359_2018-05-10",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6359/2018-05-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,628 mm³, 3.2% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; hippocampal volume measures 7,644 mm³, 0.5% below the reference mean. With a Z-score of -0.06 (47.6th percentile), this represents normal volume ; whole brain volume measures 933,478 mm³, 9.3% below the reference mean. With a Z-score of -1.16 (12.4th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,156 mm³, 6.8% above the reference mean. With a Z-score of 0.52 (70.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,302 mm³, 6.0% above the reference mean. With a Z-score of 0.68 (75.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,283 mm³, 1.2% below the reference mean. With a Z-score of -0.10 (45.9th percentile), this represents normal volume . ",
  "text_data": "Age is 67.4 years. Gender is Female. Education: 20 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 30.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.16 SUVR (mild elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild whole-brain atrophy (Z-score -1.16, 12.4th percentile), but all other regions (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within normal ranges. Cognitive scores (MMSE 30, MoCA 30) are intact, and there is no clinical evidence of impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild whole-brain atrophy could warrant monitoring, but no other red flags)",
  "timestamp": "2025-07-26T15:50:04.032889"
}