ArticleJournal of medical physics
Evaluation of Residual Liver Motion Using Multiphase Computed Tomography in Stereotactic Body Radiotherapy: A Comparison of Three Motion Management Techniques.
Article in Journal of medical physics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Introduction: The liver is highly susceptible to internal motion during stereotactic body radiotherapy, requiring effective motion management. This study used multiphase computed tomography (MPCT) to assess residual liver movement under deep inspiration breath hold (DIBH), abdominal compression (AC) and free breathing (FB), comparing patient-specific internal target volume (PSITV) and generalized internal target volume (GITV). Materials and Methods: A retrospective analysis of 57 patients with multiple hepatic targets was conducted, where motion management techniques included DIBH ( Results: Maximum motion occurred in the CC direction, highest in FB (6.73 ± 0.83 mm), followed by AC (5.91 ± 0.50 mm) and DIBH (5.36 ± 0.46 mm). ML and AP motions were similar across techniques: DIBH (2.92 ± 0.33 mm, 3.08 ± 0.38 mm), AC (3.02 ± 0.26 mm, 3.66 ± 0.51 mm), and FB (3.00 ± 0.31 mm, 3.37 ± 0.53 mm). Differences were not statistically significant ( Conclusion: MPCT identified residual hepatic motion across motion management techniques, highlighting PSITV's role in improving dosimetric precision and reducing radiation exposure to adjacent organs and normal liver.
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