Keywords: Liver, Diffusion/other diffusion imaging techniques, oncologic imaging, rapid protocol, T2 weighted, neuroendocrine tumor, hepatic metastasis, multi-shot DWI, surveillance imaging, tumor assessment, Gadoxetate
Motivation: Liver metastasis detection without intravenous contrast has potential applications in MRI surveillance and whole-body imaging.
Goal(s): To compare multishot DWI (msDWI) and T2w imaging with fat suppression (T2w+FS) in detecting neuroendocrine tumor (NET) liver metastases.
Approach: We retrospectively determined the visibility of 114 lesions (35 patients) on msDWI and multiplanar T2w+FS. Sensitivities were calculated.
Results: msDWI outperforms T2w+FS, with sensitivity approaching 90% for lesions <=5mm.
Impact: HBP (Gadoxetate) imaging is the gold standard for detecting liver metastases, however rapid MRI without intravenous contrast is attractive from a cost and patient perspective. msDWI alone may prove sufficient for NET metastasis detection.
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