Study of the Dosimetric Differences Between AXB and AAA Algorithms in
IMRT for After Left Radical Mastectomy by Patient 3D Verified
JIANG Shewei1, WANG Yanxia1, WANG Lu2, WEI Ke3
1. Department of Radiotherapy, Xinyang People's Hospital, Xinyang Henan 464000, China;
2. Department of Radiotherapy, Anshan Cancer Hospitai, Anshan Liaoning 114000, China;
3. Department of Radiotherapy, Xinxiang First People's Hospital, Xinxiang Henan 453000, China
Abstract：Objective To study the dosimetric differences of Acuros XB (AXB) and (anisotropic analytical algorithm) AAA
algorithms in intensity modulated radiation therapy (IMRT) after left radical mastectomy bases on patient 3D. Methods A total
of 26 patients with after left radical mastectomy and radiotherapy were selected. Eclipse 15.5 treatment planning system (TPS)
was used to design the fixed field dynamic intensity modulation plan, AAA algorithm and AXB algorithm were used to calculate
the dose deposition, imported to the Patient 3D module of the IBA compass software system and independently calculated the
reconstructed dose using two algorithms. The dosimetric parameters and verification results of each structure were compared.
Results The result of TPS calculation showed that the V5 and Dmean of the left lung of AXB algorithm was significantly lower than
those of AAA algorithm (P<0.05). Patient 3D results showed that the two algorithms had their own advantages and disadvantages. Dmean
and D1 of right lung, left lung, heart and healthy mammary gland, as well as the V5 of the left lung, the consistency of AXB algorithm
and TPS optimization results were better than that of the AAA algorithm. Compared with the cross-sectional dose-reconstruction γ
analysis of the two algorithms, AAA algorithm had a large dose deviation in the left lung. Conclusion In the planning of after left radical
mastectomy IMRT, both AAA algorithm and AXB algorithm meet the clinical requirements. AXB algorithm significantly reduces the
percentage volume of V5 in the left lung, which is more in line with the actual optimized dose of TPS in the low dose area of the left lung.
蒋社伟1，王艳霞1，王璐2，韦珂3. Patient 3D验证乳腺癌根治术后调强放疗中AXB和AAA算法的剂量学差异[J]. 中国医疗设备, 2023, 38(2): 57-62.
JIANG Shewei1, WANG Yanxia1, WANG Lu2, WEI Ke3. Study of the Dosimetric Differences Between AXB and AAA Algorithms in
IMRT for After Left Radical Mastectomy by Patient 3D Verified. China Medical Devices, 2023, 38(2): 57-62.
