Comparison of whole-body MRI and 68Ga-DOTATATE PET-CT findings in patients with suspected peritoneal metastases from neuroendocrine tumors

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Introduction:

Aim(s): The aim of this study was to compare body MRI and 68Ga-DOTATATE PET/CT in detecting metastatic lesions from neuroendocrine tumors (NETs) suspected of peritoneal metastases.

Materials and methods: In this study, patients that have undergone a body MRI and a 68Ga-DOTATATE PET-CT with suspicion of peritoneal metastases from NET between 2016-2020 were included. The MRI consisted of diffusion-weighted, T2-weighted, and post-contrast T1-weighted imaging of the thorax, abdomen, and pelvis. The 68Ga-DOTATATE PET-CT acquisitions were made 45 minutes after the intravenous injection of the tracer. To identify all potentially malignant lesions, the MRI images and the PET-CT images were respectively evaluated by an abdominal radiologist and a nuclear medicine physician. The findings were compared for discrepancies.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author: Engbersen M

Authors: Engbersen M, Versleijen M, Lambregts D, Beets-Tan R, Tesselaar M,

Keywords: 68Ga-DOTATATE PET/CT, MRI, PET/CT, diffusion-weighted MRI, metastatic NET,