Diffusion-Weighted Imaging Techniques in Lymphoma Assessment
Summary
Diffusion-weighted imaging (DWI) has emerged as a pivotal magnetic resonance modality for non-invasive characterisation of lymphoid malignancies. By sensitising image contrast to the random motion of water molecules within tissues, DWI yields quantitative parameters—most notably the apparent diffusion coefficient (ADC)—that correlate inversely with cellular density and tumour viability. In lymphoma, DWI is applied both in whole-body protocols and as an adjunct to conventional MRI sequences to improve lesion detection, staging accuracy and early treatment response assessment. The absence of ionising radiation and intravenous contrast with DWI makes it especially attractive for paediatric, pregnant and surveillance settings. Advances in sequence design, including background body signal suppression and high b-value acquisitions, have enhanced lesion conspicuity in nodal and extranodal sites. Integration of ADC mapping with standard anatomical imaging permits more reliable differentiation between active disease, treatment-related changes and fibrotic tissue. As DWI techniques mature, they are increasingly incorporated into multiparametric frameworks alongside metabolic imaging, offering a comprehensive, radiation-free alternative for guiding clinical decision-making and long-term follow-up.
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Diffusion-Weighted Imaging Techniques in Lymphoma Assessment publication trend
The graph below shows the total number of articles in diffusion-weighted imaging techniques in lymphoma assessment across all publications each year (not limited to Nature Index journals).
Technical terms
Diffusion-weighted imaging (DWI): MRI technique that detects the microscopic movement of water molecules, providing contrast based on tissue cellularity.
Apparent diffusion coefficient (ADC): quantitative value calculated from DWI that reflects the degree of water diffusion, inversely related to cell density.
FDG-PET/CT: hybrid imaging modality combining 18F-fluorodeoxyglucose positron emission tomography with computed tomography to assess metabolic activity and anatomy.
Whole-body MRI (WB-MRI): comprehensive MRI protocol that acquires images of the entire body, often including DWI sequences for global disease evaluation.
Diffusion-weighted imaging with background body signal suppression (DWIBS): specialised DWI variant optimised for whole-body scanning by reducing background noise and enhancing lesion visibility.
References
- Whole body MRI with Diffusion Weighted Imaging versus 18F-fluorodeoxyglucose-PET/CT in the staging of lymphomas. La radiologia medica (2023).
- Assessment of naive indolent lymphoma using whole-body diffusion-weighted imaging and T2-weighted MRI: results of a prospective study in 30 patients. Cancer Imaging (2021).
- Whole-Body Magnetic Resonance Imaging: Current Role in Patients with Lymphoma. Diagnostics (2021).
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