{
  "ptid_time": "072_S_4226_2013-10-04",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4226/2013-10-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 6,189 mm³, 72.3% below the reference mean. With a Z-score of -1.81 (3.5th percentile), this represents moderate atrophy; hippocampal volume measures 7,657 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; whole brain volume measures 936,649 mm³, 9.0% below the reference mean. With a Z-score of -1.12 (13.2th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,204 mm³, 8.0% above the reference mean. With a Z-score of 0.62 (73.2th percentile), this represents normal volume ; fusiform gyrus volume measures 14,386 mm³, 21.0% below the reference mean. With a Z-score of -2.36 (0.9th percentile), this represents significant atrophy; middle temporal gyrus volume measures 20,144 mm³, 1.8% below the reference mean. With a Z-score of -0.16 (43.5th percentile), this represents normal volume . ",
  "text_data": "Age is 64.9 years. Gender is Female. Education: 17 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.15 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The imaging shows moderate ventricular enlargement and mild whole-brain atrophy, with significant atrophy in the fusiform gyrus, but hippocampal and entorhinal cortex volumes are normal. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to fusiform gyrus atrophy, but preserved cognition and no amyloid pathology suggest non-AD etiology or early non-progressive changes)",
  "timestamp": "2025-07-26T09:19:33.970540"
}