51
|
Kokuryo D, Aoki I, Yuba E, Kono K, Aoshima S, Kershaw J, Saga T. Evaluation of a combination tumor treatment using thermo-triggered liposomal drug delivery and carbon ion irradiation. Transl Res 2017; 185:24-33. [PMID: 28482173 DOI: 10.1016/j.trsl.2017.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 02/03/2023]
Abstract
The combination of radiotherapy with chemotherapy is one of the most promising strategies for cancer treatment. Here, a novel combination strategy utilizing carbon ion irradiation as a high-linear energy transfer (LET) radiotherapy and a thermo-triggered nanodevice is proposed, and drug accumulation in the tumor and treatment effects are evaluated using magnetic resonance imaging relaxometry and immunohistology (Ki-67, n = 15). The thermo-triggered liposomal anticancer nanodevice was administered into colon-26 tumor-grafted mice, and drug accumulation and efficacy was compared for 6 groups (n = 32) that received or did not receive the radiotherapy and thermo trigger. In vivo quantitative R1 maps visually demonstrated that the multimodal thermosensitive polymer-modified liposomes (MTPLs) can accumulate in the tumor tissue regardless of whether the region was irradiated by carbon ions or not. The tumor volume after combination treatment with carbon ion irradiation and MTPLs with thermo-triggering was significantly smaller than all the control groups at 8 days after treatment. The proposed strategy of combining high-LET irradiation and the nanodevice provides an effective approach for minimally invasive cancer treatment.
Collapse
Affiliation(s)
- Daisuke Kokuryo
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan; Graduate School of System Informatics, Kobe University, Kobe, Hyogo, Japan
| | - Ichio Aoki
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan.
| | - Eiji Yuba
- Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Kenji Kono
- Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka, Japan
| | | | - Jeff Kershaw
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Tsuneo Saga
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| |
Collapse
|
52
|
Individualized Selection of Beam Angles and Treatment Isocenter in Tangential Breast Intensity Modulated Radiation Therapy. Int J Radiat Oncol Biol Phys 2017; 98:447-453. [DOI: 10.1016/j.ijrobp.2017.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 01/31/2017] [Accepted: 02/07/2017] [Indexed: 11/22/2022]
|
53
|
Dosimetric study of three-dimensional conformal radiotherapy, electronic compensator technique, intensity-modulated radiation therapy and volumetric-modulated arc therapy in whole breast irradiation. JOURNAL OF RADIOTHERAPY IN PRACTICE 2017. [DOI: 10.1017/s1460396917000243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AbstractBackgroundWhole breast irradiation is an essential treatment after breast-conserving surgery (BCS). However, there are some adverse effects from inhomogeneity and dose to adjacent normal tissues.ObjectiveAim of this study was to compare dosimetry among standard technique, three-dimensional conformal radiotherapy (3D-CRT), and advanced techniques, electronic compensator (ECOMP), inverse intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT).MethodsWhole breast irradiation treatment plans of patients who had underwent BCS and whole breast irradiation were re-planned with all four techniques. Clinical target volume was contoured according to the Radiation Therapy Oncology Group atlas for breast only in patients who had negative node or ductal carcinoma in situ and breast with chest wall for patients with positive node. Planning target volume was non-uniformly expanded. Dose prescription was 50 Gy in 25 fractions with 6 MV photon energy.ResultsIn total, 25 patients underwent whole breast irradiation with computed tomography simulation from November 2013 to November 2014 were included. Six patients with positive nodes were re-planned for breast with chest wall irradiation and 19 patients with negative nodes were re-planned for breast only irradiation. Primary outcome, radical dose homogeneity index (HI) of 3D-CRT, ECOMP, IMRT and VMAT were 0·865, 0·889, 0·890 and 0·866, respectively. ECOMP and IMRT showed significant higher HI than 3D-CRT (p-value<0·001). Secondary outcome, conformity index (CI) of advanced technique were significantly better than 3D-CRT. Lung V20, mean ipsilateral lung dose (MILD), mean heart dose (MHD), heart V25, heart V30 of advanced techniques were also lower than 3D-CRT. ECOMP had better mean lung dose (MLD), mean contralateral lung dose (MCLD) and mean contralateral breast dose (MCBD) when compared with 3D-CRT. Monitor units of advanced techniques were significantly higher than 3D-CRT.ConclusionsHI of ECOMP and IMRT were significantly higher than 3D-CRT technique. All advanced techniques showed statistically better in CI. Lung V20, MILD, heart V25 and heart V30 of advanced techniques were lower than 3D-CRT. However, only ECOMP showed decreased MLD, MHD, MCLD and MCBD when compared with 3D-CRT.
Collapse
|
54
|
Aoulad N, Massabeau C, de Lafontan B, Vieillevigne L, Hangard G, Ciprian C, Chaltiel L, Moyal É, Izar F. Toxicité aiguë de la tomothérapie des cancers mammaires. Cancer Radiother 2017; 21:180-189. [DOI: 10.1016/j.canrad.2016.11.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 11/19/2016] [Accepted: 11/25/2016] [Indexed: 11/29/2022]
|
55
|
Chan TY, Tan PW, Tang JI. Intensity-modulated radiation therapy for early-stage breast cancer: is it ready for prime time? BREAST CANCER-TARGETS AND THERAPY 2017; 9:177-183. [PMID: 28360536 PMCID: PMC5365280 DOI: 10.2147/bctt.s127583] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Whole breast external beam radiotherapy (WBEBRT) is commonly used as an essential arm in the treatment management of women with early-stage breast cancer. Dosimetry planning for conventional WBEBRT typically involves a pair of tangential fields. Advancement in radiation technology and techniques has the potential to improve treatment outcomes with clinically meaningful long-term benefits. However, this advancement must be balanced with safety and improved efficacy. Intensity-modulated radiation therapy (IMRT) is an advanced technique that shows promise in improving the planning process and radiation delivery. Early data on utilizing IMRT for WBEBRT demonstrate more homogenous dose distribution with reduction in organs at risk doses. This translates to toxicities reduction. The two common descriptors for IMRT are forward-planning "fields in field" and inverse planning. Unlike IMRT for other organs, the aim of IMRT for breast planning is to achieve dose homogeneity and not organ conformality. The aim of this paper was to evaluate whether IMRT is ready for prime time based on these three points: 1) workload impact, 2) the clinical impact on the patient's quality of life, and 3) the appropriateness and applicability to clinical practice.
Collapse
Affiliation(s)
- Tabitha Y Chan
- Department of Radiation Oncology, National University Cancer Institute, Singapore, Singapore
| | - Poh Wee Tan
- Department of Radiation Oncology, National University Cancer Institute, Singapore, Singapore
| | - Johann I Tang
- Department of Radiation Oncology, National University Cancer Institute, Singapore, Singapore
| |
Collapse
|
56
|
Mitchell RA, Wai P, Colgan R, Kirby AM, Donovan EM. Improving the efficiency of breast radiotherapy treatment planning using a semi-automated approach. J Appl Clin Med Phys 2017; 18:18-24. [PMID: 28291912 PMCID: PMC5689888 DOI: 10.1002/acm2.12006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/05/2016] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES To reduce treatment planning times while maintaining plan quality through the introduction of semi-automated planning techniques for breast radiotherapy. METHODS Automatic critical structure delineation was examined using the Smart Probabilistic Image Contouring Engine (SPICE) commercial autosegmentation software (Philips Radiation Oncology Systems, Fitchburg, WI) for a cohort of ten patients. Semiautomated planning was investigated by employing scripting in the treatment planning system to automate segment creation for breast step-and-shoot planning and create objectives for segment weight optimization; considerations were made for three different multileaf collimator (MLC) configurations. Forty patients were retrospectively planned using the script and a planning time comparison performed. RESULTS The SPICE heart and lung outlines agreed closely with clinician-defined outlines (median Dice Similarity Coefficient > 0.9); median difference in mean heart dose was 0.0 cGy (range -10.8 to 5.4 cGy). Scripted treatment plans demonstrated equivalence with their clinical counterparts. No statistically significant differences were found for target parameters. Minimal ipsilateral lung dose increases were also observed. Statistically significant (P < 0.01) time reductions were achievable for MLCi and Agility MLC (Elekta Ltd, Crawley, UK) plans (median 4.9 and 5.9 min, respectively). CONCLUSIONS The use of commercial autosegmentation software enables breast plan adjustment based on doses to organs at risk. Semi-automated techniques for breast radiotherapy planning offer modest reductions in planning times. However, in the context of a typical department's breast radiotherapy workload, minor savings per plan translate into greater efficiencies overall.
Collapse
Affiliation(s)
- Robert A Mitchell
- Joint Department of PhysicsThe Royal Marsden NHS Foundation Trust/Institute of Cancer ResearchSuttonSurreyUK
| | - Philip Wai
- Joint Department of PhysicsThe Royal Marsden NHS Foundation Trust/Institute of Cancer ResearchSuttonSurreyUK
| | - Ruth Colgan
- Joint Department of PhysicsThe Royal Marsden NHS Foundation Trust/Institute of Cancer ResearchSuttonSurreyUK
| | - Anna M Kirby
- Department of RadiotherapyThe Royal Marsden NHS Foundation TrustSuttonSurreyUK
| | - Ellen M Donovan
- Joint Department of PhysicsThe Royal Marsden NHS Foundation Trust/Institute of Cancer ResearchSuttonSurreyUK
| |
Collapse
|
57
|
[Respiratory synchronization and breast radiotherapy]. Cancer Radiother 2016; 20:576-82. [PMID: 27592267 DOI: 10.1016/j.canrad.2016.07.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 07/04/2016] [Indexed: 11/21/2022]
Abstract
Adjuvant radiation therapy following breast cancer surgery continues to improve locoregional control and overall survival. But the success of highly targeted-conformal radiotherapy such as intensity-modulated techniques, can be compromised by respiratory motion. The intrafraction motion can potentially result in significant under- or overdose, and also expose organs at risk. This article summarizes the respiratory motion and its effects on imaging, dose calculation and dose delivery by radiotherapy for breast cancer. We will review the methods of respiratory synchronization available for breast radiotherapy to minimize the respiratory impact and to spare organs such as heart and lung.
Collapse
|
58
|
Multibeam inverse intensity-modulated radiotherapy (IMRT) for whole breast irradiation: a single center experience in China. Oncotarget 2016; 6:35063-72. [PMID: 26393681 PMCID: PMC4741509 DOI: 10.18632/oncotarget.5278] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 09/04/2015] [Indexed: 11/25/2022] Open
Abstract
Purpose To present the clinical experience in our cancer center with multibeam inverse intensity-modulated radiotherapy (IMRT) for early stage breast cancer (BC) patients with whole breast irradiation (WBI). Methods We retrospectively analyzed 622 patients with Stage 0 to III BC treated from 2008 to 2011 with wide local excision and WBI, using an inverse IMRT technique. All of the patients were prescribed a total dose of 50 Gy to the whole breast in 2-Gy fractions, followed by a tumor bed boost of 10 Gy in 5 fractions using an electron beam. Results Of all of the patients, 132 (21.2%) received whole breast plus regional lymph node (RLN) irradiation. 438 of 622 patients had records of acute skin toxicity based on common terminology criteria (CTC) for adverse events. Two hundred eighty (64%) patients had Grade 0/1 toxicity, 153 (35%) had Grade 2 and only 4 patients experienced grade 3 toxicity. Seventy patients (16%) had moist desquamation. Univariate analysis revealed that breast planning target volume was the only predictive factor for Grade ≥2 acute dermatitis (P = 0.002). After 4 years, 170 patients reported cosmetic results by self-assessment, of whom 151 (89%) patients reported good/excellent cosmetic results, and 17 (11%) patients reported fair assessments. For invasive cancer, the four-year rate of freedom from locoregional recurrence survival was 98.3%. Regarding carcinoma in situ, no patients experienced recurrence. Conclusion BC patients who underwent conservative surgery followed by inverse IMRT plan exhibited acceptable acute toxicities and clinical outcomes. Longer follow-up is needed.
Collapse
|
59
|
Yang Y, Cameron J, Humphris G. The relationship between cancer patient's fear of recurrence and radiotherapy: a systematic review and meta-analysis. Psychooncology 2016; 26:738-746. [DOI: 10.1002/pon.4224] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/05/2016] [Accepted: 07/12/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Yuan Yang
- School of Medicine; University of St Andrews; St Andrews UK
| | - Josie Cameron
- Edinburgh Cancer Centre; Western General Hospital; Edinburgh UK
| | - Gerry Humphris
- School of Medicine; University of St Andrews; St Andrews UK
- Edinburgh Cancer Centre; Western General Hospital; Edinburgh UK
| |
Collapse
|
60
|
Rudat V, Nour A, Ghaida SA, Alaradi A. Impact of hypofractionation and tangential beam IMRT on the acute skin reaction in adjuvant breast cancer radiotherapy. Radiat Oncol 2016; 11:100. [PMID: 27473272 PMCID: PMC4967307 DOI: 10.1186/s13014-016-0674-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/22/2016] [Indexed: 02/08/2023] Open
Abstract
Background The purpose of the study was to evaluate the impact of multiple prognostic factors on the acute skin reaction in adjuvant breast cancer radiotherapy, in particular the impact of hypofractionation (HF) compared to conventional fractionation (CF) and tangential beam (TB) IMRT compared to three-dimensional conformal radiotherapy (3DCRT). Methods Two-hundred and sixty-six breast cancer patients with postoperative radiotherapy after breast conserving surgery or mastectomy were retrospectively evaluated. Patients were treated with HF (15 fractions of 2.67 Gy; n = 121) or CF (28 fractions of 1.8 Gy or 25 fractions of 2.0 Gy; n = 145) and TB-IMRT (n = 151) or 3DCRT (n = 115). The acute skin reactions were prospectively assessed using the CTCAE v4 grading scale. Ordinal regression analysis was used to assess the impact of possible prognostic factors on the maximal acute skin reaction. Results Grade 2 skin reactions were observed in 19 % of the patients treated with CF compared to 2 % treated with HF. On univariate analysis, the fractionation regimen, the PTV (breast versus chest wall), the volume of the PTV and the body mass index were significant prognostic factors for the maximum acute skin reaction. On multivariate analysis, the fractionation regimen (p < 0.00001) and the volume of the PTV (p = 0.0002) remained as independent significant factors. Conclusions Our data suggest that HF is associated with a significantly reduced maximal acute skin reaction compared to CF.
Collapse
Affiliation(s)
- Volker Rudat
- Department of Radiation Oncology, Saad Specialist Hospital, Al Khobar, 31952, Saudi Arabia.
| | - Alaa Nour
- Department of Radiation Oncology, Saad Specialist Hospital, Al Khobar, 31952, Saudi Arabia
| | - Salam Abou Ghaida
- Department of Radiation Oncology, Saad Specialist Hospital, Al Khobar, 31952, Saudi Arabia
| | - Aziz Alaradi
- Department of Radiation Oncology, Saad Specialist Hospital, Al Khobar, 31952, Saudi Arabia
| |
Collapse
|
61
|
Dean J, Hansen CJ, Westhuyzen J, Waller B, Turnbull K, Wood M, Last A. Tangential intensity modulated radiation therapy (IMRT) to the intact breast. J Med Radiat Sci 2016; 63:217-223. [PMID: 27741382 PMCID: PMC5167335 DOI: 10.1002/jmrs.185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 04/06/2016] [Accepted: 04/11/2016] [Indexed: 11/07/2022] Open
Abstract
INTRODUCTION Inverse-planned intensity modulated radiation therapy (IP-IMRT) has potential benefits over other techniques for tangential intact breast radiotherapy. Possible benefits include increased homogeneity, faster planning time, less inter-planner variability and lower doses to organs at risk (OAR). We therefore conducted a pilot study of previously treated intact breast patients to compare the current forward-planned 'field-in-field' technique (FP-IMRT) with an IP-IMRT alternative. METHODS The IP-IMRT plans of 20 patients were generated from a template created for the planning system. All patients were prescribed adjuvant whole breast radiotherapy using a hypofractionated regimen of 40.05 Gy in 15 fractions over 3 weeks. Plans were assessed based on visual inspection of coverage as well as statistical analysis and compared to the clinically acceptable FP-IMRT plans. Patients were planned retrospectively in Monaco 3.2® using a laterality-specific, tangential planning template. Minor adjustments were made as necessary to meet the planning criteria in the protocol. Dose coverage, maximums, homogeneity indices and doses to OAR were recorded. RESULTS The IP-IMRT plans provided more consistent coverage (38.18 Gy vs. 36.08 Gy of D95; P = 0.005), a comparable though higher average maximum (D2 = 42.52 Gy vs. 42.08 Gy; P = 0.0001), more homogeneous plans (homogeneity index = 0.908 vs. 0.861; P = 0.01) and somewhat lower V20 heart and lung doses (0.11% vs. 0.89% for heart; 5.4% vs. 7.52% for lung) than FP-IMRT (P > 0.05). CONCLUSION Clinically acceptable plans have been generated using the IP-IMRT templates in Monaco. Improvements in consistency and quality were seen when compared to the FP-IMRT plans. The template-based process is an efficient method to inversely plan IMRT for breast patients.
Collapse
Affiliation(s)
- Jenna Dean
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Port Macquarie Base Hospital, Port Macquarie, New South Wales, Australia
| | - Carmen J Hansen
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Port Macquarie Base Hospital, Port Macquarie, New South Wales, Australia
| | - Justin Westhuyzen
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Coffs Harbour Health Campus, Coffs Harbour, New South Wales, Australia
| | - Brett Waller
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Port Macquarie Base Hospital, Port Macquarie, New South Wales, Australia
| | - Kirsty Turnbull
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Coffs Harbour Health Campus, Coffs Harbour, New South Wales, Australia
| | - Maree Wood
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Coffs Harbour Health Campus, Coffs Harbour, New South Wales, Australia
| | - Andrew Last
- Department of Radiation Oncology, Mid North Coast Cancer Institute, Port Macquarie Base Hospital, Port Macquarie, New South Wales, Australia
| |
Collapse
|
62
|
Sanghani M, Mignano J. Intensity Modulated Radiation Therapy: A Review of Current Practice and Future Directions. Technol Cancer Res Treat 2016; 5:447-50. [PMID: 16981787 DOI: 10.1177/153303460600500501] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of intensity modulated radiation therapy (IMRT) has been rapidly growing in the United States. This technology is now being used in a multitude of academic and community centers throughout the country and is being incorporated into the treatment of cancers in almost every anatomical site, most commonly head and neck cancer, central nervous system tumors, and prostate cancer. In addition, current protocols are investigating the use of IMRT for the treatment of breast cancer, lung cancer, abdominal/retroperitoneal malignancies, and gynecological diseases. This article presents a brief technical review of IMRT and addresses specific clinical concerns and caveats that radiation oncologists should be aware of when utilizing this technology.
Collapse
Affiliation(s)
- Mona Sanghani
- Department of Radiation Oncology, Tufts-New England Medical Center, 750 Washington St., Box #359, Boston, MA 02111, USA.
| | | |
Collapse
|
63
|
Hui SK, Das RK, Kapatoes J, Oliviera G, Becker S, Odau H, Fenwick JD, Patel R, Kuske R, Mehta M, Paliwal B, Mackie TR, Fowler JF, Welsh JS. Helical Tomotherapy as a Means of Delivering Accelerated Partial Breast Irradiation. Technol Cancer Res Treat 2016; 3:639-46. [PMID: 15560722 DOI: 10.1177/153303460400300614] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A novel treatment approach utilizing helical tomotherapy for partial breast irradiation for patients with early-stage breast cancer is described. This technique may serve as an alternative to high dose-rate (HDR) interstitial brachytherapy and standard linac-based approaches. Through helical tomotherapy, highly conformal irradiation of target volumes and avoidance of normal sensitive structures can be achieved. Unlike HDR brachytherapy, it is noninvasive. Unlike other linac-based techniques, it provides image-guided adaptive radiotherapy along with intensity modulation. A treatment planning CT scan was obtained as usual on a post-lumpectomy patient undergoing HDR interstitial breast brachytherapy. The patient underwent catheter placement for HDR treatment and was positioned prone on a specially designed position-supporting mattress during C T. The planning target volume (PTV) was defined as the lumpectomy bed plus a 20 mm margin. The prescription dose was 34 Gy (10 fx of 3.4 Gy) in both the CT based HDR and on the tomotherapy plan. Cumulative dose-volume histograms (DVHs) were generated and analyzed for the target, lung, heart, skin, pectoralis muscle, and chest wall for both HDR brachytherapy and helical tomotherapy. Dosimetric coverage of the target with helical tomotherapy was conformal and homogeneous. “Hot spots” (≥150% isodose line) were present around implanted dwell positions in brachytherapy plan whereas no isodose lines higher than 109% were present in the helical tomotherapy plan. Similar dose coverage was achieved for lung, pectoralis muscle, heart, chest wall and breast skin with the two methods. We also compared our results to that obtained using conventional linac-based three dimensional (3D) conformal accelerated partial breast irradiation. Dose homogeneity is excellent with 3D conformal irradiation, and lung, heart and chest wall dose is less than for either HDR brachytherapy or helical tomotherapy but skin and pectoral muscle doses were higher than with the other techniques. Our results suggest that helical tomotherapy can serve as an effective means of delivering accelerated partial breast irradiation and may offer superior dose homogeneity compared to HDR brachytherapy.
Collapse
Affiliation(s)
- Susanta K Hui
- Department of Human Oncology, University of Wisconsin-Madison, 600 Highland Avenue, Madison WI 53792, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
64
|
Finkel MA, Cooper BT, Li X, Fenton-Kerimian M, Goldberg JD, Formenti SC. Quality of Life in Women Undergoing Breast Irradiation in a Randomized, Controlled Clinical Trial Evaluating Different Tumor Bed Boost Fractionations. Int J Radiat Oncol Biol Phys 2016; 95:579-89. [DOI: 10.1016/j.ijrobp.2016.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 12/09/2015] [Accepted: 02/01/2016] [Indexed: 01/22/2023]
|
65
|
Batumalai V, Phan P, Choong C, Holloway L, Delaney GP. Comparison of setup accuracy of three different image assessment methods for tangential breast radiotherapy. J Med Radiat Sci 2016; 63:224-231. [PMID: 27741383 PMCID: PMC5167282 DOI: 10.1002/jmrs.180] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/29/2016] [Indexed: 11/28/2022] Open
Abstract
Introduction To compare the differences in setup errors measured with electronic portal image (EPI) and cone‐beam computed tomography (CBCT) in patients undergoing tangential breast radiotherapy (RT). Relationship between setup errors, body mass index (BMI) and breast size was assessed. Methods Twenty‐five patients undergoing postoperative RT to the breast were consented for this study. Weekly CBCT scans were acquired and retrospectively registered to the planning CT in three dimensions, first using bony anatomy for bony registration (CBCT‐B) and again using breast tissue outline for soft tissue registration (CBCT‐S). Digitally reconstructed radiographs (DRR) generated from CBCT to simulate EPI were compared to the planning DRR using bony anatomy in the V (parallel to the cranio‐caudal axis) and U (perpendicular to V) planes. The systematic (Σ) and random (σ) errors were calculated and correlated with BMI and breast size. Results The systematic and random errors for EPI (ΣV = 3.7 mm, ΣU = 2.8 mm and σV = 2.9 mm, σU = 2.5) and CBCT‐B (ΣV = 3.5 mm, ΣU = 3.4 mm and σV = 2.8 mm, σU = 2.8) were of similar magnitude in the V and U planes. Similarly, the differences in setup errors for CBCT‐B and CBCT‐S in three dimensions were less than 1 mm. Only CBCT‐S setup error correlated with BMI and breast size. Conclusions CBCT and EPI show insignificant variation in their ability to detect setup error. These findings suggest no significant differences that would make one modality considered superior over the other and EPI should remain the standard of care for most patients. However, there is a correlation with breast size, BMI and setup error as detected by CBCT‐S, justifying the use of CBCT‐S for larger patients.
Collapse
Affiliation(s)
- Vikneswary Batumalai
- Liverpool Cancer Therapy Centre, Liverpool, New South Wales, Australia.,Ingham Institute for Applied Medical Research, Liverpool, New South Wales, Australia.,South Western Clinical School, University of New South Wales, Liverpool, New South Wales, Australia
| | - Penny Phan
- Liverpool Cancer Therapy Centre, Liverpool, New South Wales, Australia
| | - Callie Choong
- Liverpool Cancer Therapy Centre, Liverpool, New South Wales, Australia
| | - Lois Holloway
- Liverpool Cancer Therapy Centre, Liverpool, New South Wales, Australia.,Ingham Institute for Applied Medical Research, Liverpool, New South Wales, Australia.,South Western Clinical School, University of New South Wales, Liverpool, New South Wales, Australia.,Centre for Medical Radiation Physics, University of Wollongong, Sydney, New South Wales, Australia.,School of Physics, University of Sydney, Liverpool, New South Wales, Australia
| | - Geoff P Delaney
- Liverpool Cancer Therapy Centre, Liverpool, New South Wales, Australia.,Ingham Institute for Applied Medical Research, Liverpool, New South Wales, Australia.,South Western Clinical School, University of New South Wales, Liverpool, New South Wales, Australia.,School of Medicine, University of Western Sydney, New South Wales, Australia
| |
Collapse
|
66
|
Meyer P, Niederst C, Scius M, Jarnet D, Dehaynin N, Gantier M, Waissi W, Poulin N, Karamanoukian D. Is the lack of respiratory gating prejudicial for left breast TomoDirect treatments? Phys Med 2016; 32:644-50. [DOI: 10.1016/j.ejmp.2016.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 04/01/2016] [Accepted: 04/04/2016] [Indexed: 10/21/2022] Open
|
67
|
Zhao LR, Zhou YB, Sun JG. Comparison of plan optimization for single and dual volumetric-modulated arc therapy versus intensity-modulated radiation therapy during post-mastectomy regional irradiation. Oncol Lett 2016; 11:3389-3394. [PMID: 27123122 DOI: 10.3892/ol.2016.4376] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 07/28/2015] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate volumetric-modulated arc therapy (VMAT) with single arc (1ARC) and dual arc (2ARC), and intensity-modulated radiation therapy (IMRT), and to evaluate the quality and delivery efficiency of post-mastectomy regional irradiation. A total of 24 female patients who required post-mastectomy regional irradiation were enrolled into the current study, and 1ARC, 2ARC and IMRT plans were designed for each individual patient. The quality of these plans was evaluated by calculating the homogeneity index (HI), conformity index (CI) and specific volume dose to the ipsilateral lung, double lungs, contralateral breast, heart and spinal cord. For the delivery efficiency of these plans, the total treatment time (TTT) and the number of monitor units (MUs) were evaluated. The 1ARC and 2ARC VMAT plans exhibited significantly better HIs and CIs than IMRT. For dose-volume histogram analysis, 1ARC and 2ARC VMAT spared a more specific volume dose to the ipsilateral lung, double lungs, contralateral breast, heart and spinal cord than IMRT (P<0.05). A lower MU per 2.0-Gy fraction was required for 1ARC (539 MU) and 2ARC (608 MU) than for IMRT (1,051 MU). Thus, TTT was correspondingly reduced in 1ARC and 2ARC compared to IMRT (P<0.05). There was no significant dose-volume difference in all the organs at risk (OARs) between the 1ARC and 2ARC plans (P>0.05), and 2ARC VMAT displayed a better HI and CI than 1ARC VMAT (P<0.05). By contrast, 1ARC VMAT was superior to 2ARC VAMT with regard to MU and TTT (P<0.05). The 1ARC and 2ARC VMAT plans demonstrated significantly better dose distribution in a shorter treatment time than IMRT for post-mastectomy regional irradiation, and spared the majority of OARs without compromising target coverage. The results of the present study suggest that 2ARC VMAT may be an alternative to 1ARC in order to obtain a more optimal HI and CI.
Collapse
Affiliation(s)
- Li-Rong Zhao
- Cancer Institute of the People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Yi-Bing Zhou
- Cancer Institute of the People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Jian-Guo Sun
- Cancer Institute of the People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| |
Collapse
|
68
|
Hybrid intensity-modulated radiation therapy (IMRT) simultaneous integrated boost (SIB) technique versus three-dimensional (3D) conformal radiotherapy with SIB for breast radiotherapy: a planning comparison. JOURNAL OF RADIOTHERAPY IN PRACTICE 2016. [DOI: 10.1017/s146039691600008x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AbstractAimThis study aims to compare conventional simultaneous integrated boost (SIB) planning technique with a hybrid SIB intensity-modulated radiation therapy (IMRT) technique with varying open tangent to IMRT field dose ratios. Furthermore, we investigated which of the dose ratios proves the most favourable as a class solution across a sample.MethodsIn total, 15 patients with conventional SIB treatment plans were re-planned with hybrid SIB IMRT technique using three differing open field:IMRT dose ratios, that is, 80:20, 70:30 and 60:40. Plans were compared using dosimetric comparison of organs at risk (OARs) and homogeneity and conformity indexes across target structures.ResultsAll hybrid plans reduced dose maximums and showed a reduction of high doses to both lungs but increased lower doses, that is, V5, with similar results discovered for the heart. Contralateral breast dose was shown to decrease V5 and V1 measures by hybrid arms, whereas increasing the V2. Left anterior descending artery dose and non-irradiated structures were reduced by all hybrid arms. The homogeneity and conformity increased across all hybrid arms. Qualitative assessment of all plans also favoured hybrid plans.FindingsHybrid plans produced superior dose conformity, homogeneity, reduced dose maximums and showed an improvement in most OAR parameters. The 70:30 hybrid technique exhibited greater benefits as a class solution to the sample than conventional plans due to superior dose conformity and homogeneity to target volumes.
Collapse
|
69
|
Bian X, Liu B, Yang Y. Pathological complete response following neoadjuvant radiotherapy and intraperitoneal perfusion chemotherapy for recurrent colon carcinoma: A case report and literature review. Oncol Lett 2016; 11:2747-2750. [PMID: 27073546 PMCID: PMC4812294 DOI: 10.3892/ol.2016.4299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 02/04/2016] [Indexed: 01/09/2023] Open
Abstract
The present study reports the case of a 28-year-old male who was diagnosed with sigmoid colon carcinoma and exhibited local recurrence following radical surgery and 6 cycles of adjuvant chemotherapy. The primary surgery consisted of a partial sigmoidectomy and bladder repair. At 8 months post-chemotherapy, the patient was referred to Nanjing Drum Tower Hospital (Nanjing, China) due to local recurrence at the anastomotic site, which was confirmed by colonoscopy and total abdominal computed tomography. Synchronous intensity modulation radiation therapy and intraperitoneal (IP) perfusion chemotherapy with irinotecan (100 mg/m2) was administered. Following treatment, the object efficacy evaluation revealed a complete response and a second resection of the remaining sigmoid colon was performed. The post-operative results showed a pathological complete response. This case indicated that a combination of therapies, including radiotherapy, IP perfusion chemotherapy and surgery, may be beneficial and effective in patients with recurrent colon cancer.
Collapse
Affiliation(s)
- Xinyu Bian
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University and Clinical Cancer Institute of Nanjing University, Nanjing, Jiangsu 210008, P.R. China
| | - Baorui Liu
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University and Clinical Cancer Institute of Nanjing University, Nanjing, Jiangsu 210008, P.R. China
| | - Yang Yang
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University and Clinical Cancer Institute of Nanjing University, Nanjing, Jiangsu 210008, P.R. China
| |
Collapse
|
70
|
Yang JF, Lee MS, Lin CS, Chao HL, Chen CM, Lo CH, Fan CY, Tsao CC, Huang WY. Long-Term Breast Cancer Patient Outcomes After Adjuvant Radiotherapy Using Intensity-Modulated Radiotherapy or Conventional Tangential Radiotherapy. Medicine (Baltimore) 2016; 95:e3113. [PMID: 26986158 PMCID: PMC4839939 DOI: 10.1097/md.0000000000003113] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The aim of the article is to analyze breast cancer patient clinical outcomes after long-term follow-up using intensity-modulated radiotherapy (IMRT) or conventional tangential radiotherapy (cRT). We retrospectively reviewed patients with stage 0-III breast cancer who received breast conserving therapy between April 2004 and December 2007. Of the 234 patients, 103 (44%) were treated with IMRT and 131 (56%) were treated with cRT. A total prescription dose of 45 to 50 Gy (1.8-2 Gy per fraction) was delivered to the whole breast. A 14 Gy boost dose was delivered in 7 fractions. The median follow-up was 8.2 years. Five of 131 (3.8%) cRT-treated patients and 2 of 103 (1.9%) IMRT-treated patients had loco-regional failure. The 8-year loco-regional failure-free survival rates were 96.7% and 97.6% (P = 0.393) in the cRT and IMRT groups, respectively, whereas the 8-year disease-free survival (DFS) rates were 91.2% and 93.1%, respectively (P = 0.243). Patients treated with IMRT developed ≥ grade 2 acute dermatitis less frequently than patients treated with cRT (40.8% vs 56.5%; P = 0.017). There were no differences in late toxicity. IMRT reduces ≥ grade 2 acute skin toxicity. Local control, DFS, and overall survival were equivalent with IMRT and cRT. IMRT can be considered a standard technique for breast cancer treatment.
Collapse
Affiliation(s)
- Jen-Fu Yang
- From the Department of Radiation Oncology (J-FY, C-SL, H-LC, C-MC, C-HL, C-YF, C-CT, W-YH), Tri-Service General Hospital; School of Public Health (M-SL), National Defense Medical Center; and Institute of Clinical Medicine (W-YH), National Yang-Ming University, Taipei, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
71
|
El-Sherif O, Yu E, Xhaferllari I, Gaede S. Assessment of Intrafraction Breathing Motion on Left Anterior Descending Artery Dose During Left-Sided Breast Radiation Therapy. Int J Radiat Oncol Biol Phys 2016; 95:1075-1082. [PMID: 27130788 DOI: 10.1016/j.ijrobp.2016.02.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 01/28/2016] [Accepted: 02/05/2016] [Indexed: 12/25/2022]
Abstract
PURPOSE To use 4-dimensional computed tomography (4D-CT) imaging to predict the level of uncertainty in cardiac dose estimates of the left anterior descending artery that arises due to breathing motion during radiation therapy for left-sided breast cancer. METHODS AND MATERIALS The fast helical CT (FH-CT) and 4D-CT of 30 left-sided breast cancer patients were retrospectively analyzed. Treatment plans were created on the FH-CT. The original treatment plan was then superimposed onto all 10 phases of the 4D-CT to quantify the dosimetric impact of respiratory motion through 4D dose accumulation (4D-dose). Dose-volume histograms for the heart, left ventricle (LV), and left anterior descending (LAD) artery obtained from the FH-CT were compared with those obtained from the 4D-dose. RESULTS The 95% confidence interval of 4D-dose and FH-CT differences in mean dose estimates for the heart, LV, and LAD were ±0.5 Gy, ±1.0 Gy, and ±8.7 Gy, respectively. CONCLUSION Fast helical CT is a good approximation for doses to the heart and LV; however, dose estimates for the LAD are susceptible to uncertainties that arise due to intrafraction breathing motion that cannot be ascertained without the additional information obtained from 4D-CT and dose accumulation. For future clinical studies, we suggest the use of 4D-CT-derived dose-volume histograms for estimating the dose to the LAD.
Collapse
Affiliation(s)
- Omar El-Sherif
- Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada; Department of Physics, London Regional Cancer Program, London, Ontario, Canada.
| | - Edward Yu
- Department of Radiation Oncology, London Regional Cancer Program, London, Ontario, Canada
| | - Ilma Xhaferllari
- Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada; Department of Physics, London Regional Cancer Program, London, Ontario, Canada
| | - Stewart Gaede
- Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada; Department of Physics, London Regional Cancer Program, London, Ontario, Canada; Department of Radiation Oncology, London Regional Cancer Program, London, Ontario, Canada
| |
Collapse
|
72
|
Guan H, Dong YL, Ding LJ, Zhang ZC, Huang W, Liu CX, Fu CR, Zhu J, Li HS, Li MM, Li BS. Morphological factors and cardiac doses in whole breast radiation for left-sided breast cancer. Asian Pac J Cancer Prev 2015; 16:2889-94. [PMID: 25854378 DOI: 10.7314/apjcp.2015.16.7.2889] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To investigate the impact of the breast size, shape, maximum heart depth (MDH), and chest wall hypotenuse (the distance connecting middle point of the sternum and the length of lung draw on the selected transverse CT slice) on the volumetric dose to heart with whole breast irradiation (WBI) of left-sided breast cancer patients. MATERIALS AND METHODS Fifty-three patients with left-sided breast cancer undergoing adjuvant intensity-modulated radiotherapy (IMRT) were enrolled in the study. The primary breast size and shape, MHD and DCWH (chest wall hypotenuse) were contoured on radiotherapy (RT) planning CT slices. The dose data of hearts were obtained from the dose-volume histograms (DVHs). Data were analyzed by one-way analysis of variance (ANOVA), Student's t-test and linear regression analysis. RESULTS Breast size was independent of heart dose, whereas breast shape, MHD and DCWH were correlated with heart dose. The shapes of breasts were divided into four types, as the flap type, hemisphere type, cone type and pendulous type with heart mean dose being 491.8±234.6 cGy, 752.7±219.0 cGy, 620.2±275.7 cGy, and 666.1±238.0 cGy, respectively. The flap type of breasts shows a strong statistically reduction in heart dose, compared to others (p=0.008 for V30 of heart). DCWH and MHD were found to be the most important parameters correlating with heart dose in WBI. CONCLUSIONS More attention should be paid to the heart dose of non-flap type patients. The MHD was found to be the most important parameter to correlate with heart dose in tangential WBI, closely followed by the DCWH, which could help radiation oncologists and physicsts evaluate heart dose and design RT plan in advance.
Collapse
Affiliation(s)
- Hui Guan
- Department of Radiation Oncology, Shandong's Key Laboratory of Radiation Oncology, Shandong Cancer Hospital, School of Medicine and Life Sciences, University of Jinan and Shandong Academy of Medical Sciences, Jinan, Shandong, China E-mail :
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
73
|
Tanaka H, Kajiura Y, Kitahara M, Matsuyama K, Kawaguchi M, Yamaguchi T, Okada S, Kanematsu M. Usefulness of the dual energy field-in-field technique in breast tangential radiotherapy. Radiol Med 2015; 121:323-6. [PMID: 26661953 DOI: 10.1007/s11547-015-0610-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 11/26/2015] [Indexed: 11/26/2022]
Abstract
PURPOSE In the field-in-field (FIF) technique in breast tangential radiotherapy, the energy of the subfield is usually the same as the energy of the main field. However, some studies have applied 10-18 MV to subfields in patients with large breasts. We compared two FIF plans in 66 breast cancer patients: in one, the energy of the subfield was the same as that of the main field (the mono energy plan); in the other, it was higher (the dual energy plan). MATERIALS AND METHODS The photon energy of the subfield was 6 MV in the mono energy plan and 10 MV in the dual energy plan. The percentage of the planning target volume (PTV) receiving at least 105, 100, and 95% of the prescribed dose (V105, V100, and V95, respectively) was calculated, as were the maximum and mean doses delivered to the PTV (Dmax and Dmean, respectively). Clinical target volumes (CTVs) and the thickness of the breast between the chest wall and skin surface at the level of the nipple were measured. RESULTS V95% was significantly higher in the dual energy plan than in the mono energy plan in patients with CTVs or breast thickness in the highest quartile. There were no significant differences in the other parameters of the two plans in these patients. CONCLUSION These findings demonstrate the usefulness of the dual energy FIF technique in patients with large breasts receiving breast tangential radiotherapy.
Collapse
Affiliation(s)
- Hidekazu Tanaka
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan.
| | - Yuichi Kajiura
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Masashi Kitahara
- Division of Radiation Oncology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Katsuya Matsuyama
- Division of Radiation Oncology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Masaya Kawaguchi
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Takahiro Yamaguchi
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Sunaho Okada
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| | - Masayuki Kanematsu
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu, 501-1194, Japan
| |
Collapse
|
74
|
Currey AD, Bergom C, Kelly TR, Wilson JF. Reducing the Human Burden of Breast Cancer: Advanced Radiation Therapy Yields Improved Treatment Outcomes. Breast J 2015; 21:610-20. [PMID: 26412023 DOI: 10.1111/tbj.12495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Radiation therapy is an important modality in the treatment of patients with breast cancer. While its efficacy in the treatment of breast cancer was known shortly after the discovery of x-rays, significant advances in radiation delivery over the past 20 years have resulted in improved patient outcomes. With the development of improved systemic therapy, optimizing local control has become increasingly important and has been shown to improve survival. Better understanding of the magnitude of treatment benefit, as well as patient and biological factors that confer an increased recurrence risk, have allowed radiation oncologists to better tailor treatment decisions to individual patients. Furthermore, significant technological advances have occurred that have reduced the acute and long-term toxicity of radiation treatment. These advances continue to reduce the human burden of breast cancer. It is important for radiation oncologists and nonradiation oncologists to understand these advances, so that patients are appropriately educated about the risks and benefits of this important treatment modality.
Collapse
Affiliation(s)
- Adam D Currey
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Carmen Bergom
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Tracy R Kelly
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - J Frank Wilson
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin
| |
Collapse
|
75
|
Lee HH, Hou MF, Chuang HY, Huang MY, Tsuei LP, Chen FM, Ou-Yang F, Huang CJ. Intensity modulated radiotherapy with simultaneous integrated boost vs. conventional radiotherapy with sequential boost for breast cancer - A preliminary result. Breast 2015; 24:656-60. [PMID: 26371691 DOI: 10.1016/j.breast.2015.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/19/2015] [Accepted: 08/05/2015] [Indexed: 10/23/2022] Open
Abstract
PURPOSE This study was aimed to assess the acute dermatological adverse effect from two distinct RT techniques for breast cancer patients. We compared intensity-modulated radiotherapy with simultaneous integrated boost (IMRT-SIB) and conventional radiotherapy followed by sequential boost (CRT-SB). METHODS The study population was composed of 126 consecutive female breast cancer patients treated with breast conserving surgery. Sixty-six patients received IMRT-SIB to 2 dose levels simultaneously. They received 50.4 Gy at 1.8 Gy per fraction to the whole breast and 60.2 Gy at 2.15 Gy per fraction to the tumor bed by integral boost. Sixty patients in the CRT-SB group received 50 Gy in 25 fractions to the whole breast followed by a boost irradiation to tumor bed in 5-7 fractions to a total dose of 60-64 Gy. Acute skin toxicities were documented in agreement with the Common Terminology Criteria for Adverse Events version 3 (CTCAE v.3.0). RESULTS Ninety-eight patients had grade 1 radiation dermatitis while 14 patients had grade 2. Among those with grade 2, there were 3 patients in IMRT-SIB group (4.5%) while 11 in CRT-SB group (18.3%). (P = 0.048) There was no patient with higher than grade 2 toxicity. Three year local control was 99.2%, 3-year disease free survival was 97.5% and 3-year overall survival was 99.2%. CONCLUSIONS A significant reduction in the severity of acute radiation dermatitis from IMRT-SIB comparing with CRT-SB is demonstrated.
Collapse
Affiliation(s)
- Hsin-Hua Lee
- Division of Radiation Oncology, Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Radiation Oncology, Antai Tian-Sheng Memorial Hospital, Pingtung, Taiwan
| | - Ming-Feng Hou
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of General Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; National Sun Yat-Sen University-Kaohsiung Medical University Joint Research Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Hung-Yi Chuang
- Faculty of Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Yii Huang
- Division of Radiation Oncology, Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Le-Ping Tsuei
- Division of Radiation Oncology, Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Radiation Oncology, Antai Tian-Sheng Memorial Hospital, Pingtung, Taiwan
| | - Fang-Ming Chen
- Department of General Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Fu Ou-Yang
- Department of General Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Chih-Jen Huang
- Division of Radiation Oncology, Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| |
Collapse
|
76
|
Kodiyan J, Amber KT. Topical antioxidants in radiodermatitis: a clinical review. Int J Palliat Nurs 2015; 21:446-52. [DOI: 10.12968/ijpn.2015.21.9.446] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Joyson Kodiyan
- Joyson Kodiyan Medical Student, University of Miami Miller School of Medicine, Department of Radiation Oncology
| | - Kyle T Amber
- Physican, University of California Irvine, Department of Dermatology, Irvine, California
| |
Collapse
|
77
|
Yim J, Suttie C, Bromley R, Morgia M, Lamoury G. Intensity modulated radiotherapy and 3D conformal radiotherapy for whole breast irradiation: a comparative dosimetric study and introduction of a novel qualitative index for plan evaluation, the normal tissue index. J Med Radiat Sci 2015; 62:184-91. [PMID: 26451240 PMCID: PMC4592672 DOI: 10.1002/jmrs.126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 05/08/2015] [Accepted: 07/10/2015] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION We report on a retrospective dosimetric study, comparing 3D conformal radiotherapy (3DCRT) and hybrid intensity modulated radiotherapy (hIMRT). We evaluated plans based on their planning target volume coverage, dose homogeneity, dose to organs at risk (OARs) and exposure of normal tissue to radiation. The Homogeneity Index (HI) was used to assess the dose homogeneity in the target region, and we describe a new index, the normal tissue index (NTI), to assess the dose in the normal tissue inside the tangent treatment portal. METHODS Plans were generated for 25 early-stage breast cancer patients, using a hIMRT technique. These were compared with the 3DCRT plans of the treatment previously received by the patients. Plan quality was evaluated using the HI, NTI and dose to OARs. RESULTS The hIMRT technique was significantly more homogenous than the 3DCRT technique, while maintaining target coverage. The hIMRT technique was also superior at minimising the amount of tissue receiving D 105% and above (P < 0.0001). The ipsilateral lung and contralateral breast maximum were significantly lower in the hIMRT plans (P < 0.05 and P < 0.005), but the 3DCRT technique achieved a lower mean heart dose in left-sided breast cancer patients (P < 0.05). CONCLUSION Hybrid intensity modulated radiotherapy plans achieved improved dose homogeneity compared to the 3DCRT plans and superior outcome with regard to dose to normal tissues. We propose that the addition of both HI and NTI in evaluating the quality of intensity modulated radiotherapy (IMRT) breast plans provides clinically relevant comparators which more accurately reflect the new paradigm of treatment goals and outcomes in the era of breast IMRT.
Collapse
Affiliation(s)
- Jackie Yim
- Department of Radiation Oncology, Royal North Shore Hospital St Leonards, New South Wales, Australia
| | - Clare Suttie
- Department of Radiation Oncology, Royal North Shore Hospital St Leonards, New South Wales, Australia
| | - Regina Bromley
- Department of Radiation Oncology, Royal North Shore Hospital St Leonards, New South Wales, Australia
| | - Marita Morgia
- Department of Radiation Oncology, Royal North Shore Hospital St Leonards, New South Wales, Australia
| | - Gillian Lamoury
- Department of Radiation Oncology, Royal North Shore Hospital St Leonards, New South Wales, Australia
| |
Collapse
|
78
|
Fiorentino A, Mazzola R, Ricchetti F, Giaj Levra N, Fersino S, Naccarato S, Sicignano G, Ruggieri R, Di Paola G, Massocco A, Gori S, Alongi F. Intensity modulated radiation therapy with simultaneous integrated boost in early breast cancer irradiation. Report of feasibility and preliminary toxicity. Cancer Radiother 2015. [PMID: 26206732 DOI: 10.1016/j.canrad.2015.02.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
PURPOSE To investigate the feasibility and tolerance in the use of adjuvant intensity modulated radiation therapy (IMRT) and simultaneous integrated boost in patients with a diagnosis of breast cancer after breast-conserving surgery. PATIENTS AND METHODS Between September 2011 to February 2013, 112 women with a diagnosis of early breast cancer (T1-2, N0-1, M0) were treated with IMRT and simultaneous integrated boost after breast-conserving surgery in our institution. A dose of 50Gy in 25 fractions was prescribed to the whole breast and an additional dose of radiation was prescribed on the tumour bed. A dose prescription of 60Gy in 25 fractions to the tumour bed was used in patients with negative margins after surgery, whereas if the margins were close (<1mm) or positive (without a new surgical resection) a dose of 64Gy was prescribed. All patients were followed with periodic clinical evaluation. Acute and late toxicity were scored using the EORTC/RTOG radiation morbidity score system. Both patient and physician recorded cosmetic outcome evaluation with a subjective judgment scale at the time of scheduled follow-up. RESULTS The median follow-up was 28 months (range 24-40 months). The acute skin grade toxicity during the treatment was grade 0 in 8 patients (7%), grade 1 in 80 (72%), grade 2 in 24 cases (21%). No grade 3 or higher acute skin toxicity was observed. At 12 months, skin toxicity was grade 0 in 78 patients (70%), grade 1 in 34 patients (30%). No toxicity grade 2 or higher was registered. At 24 months, skin toxicity was grade 0 in 79 patients (71%), grade 1 in 33 patients (29%). No case of grade 2 toxicity or higher was registered. The pretreatment variables correlated with skin grade 2 acute toxicity were adjuvant chemotherapy (P=0.01) and breast volume ≥700cm(3) (P=0.001). Patients with an acute skin toxicity grade 2 had a higher probability to develop late skin toxicity (P<0.0001). In the 98% of cases, patients were judged to have a good or excellent cosmetic outcome. The 2-year-overall survival and 2-year-local control were 100%. CONCLUSION These data support the feasibility and safety of IMRT with simultaneous integrated boost in patients with a diagnosis of early breast cancer following breast-conserving surgery with acceptable acute and late treatment-related toxicity. A longer follow-up is needed to define the efficacy on outcomes.
Collapse
MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Breast Neoplasms/therapy
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/therapy
- Carcinoma, Lobular/mortality
- Carcinoma, Lobular/pathology
- Carcinoma, Lobular/therapy
- Esthetics
- Feasibility Studies
- Female
- Follow-Up Studies
- Humans
- Mastectomy, Segmental
- Middle Aged
- Radiodermatitis/etiology
- Radiotherapy Dosage
- Radiotherapy, Adjuvant
- Radiotherapy, Intensity-Modulated
- Severity of Illness Index
Collapse
Affiliation(s)
- A Fiorentino
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - R Mazzola
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy; Radiation oncology school, university of Palermo, Palermo, Italy.
| | - F Ricchetti
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - N Giaj Levra
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - S Fersino
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - S Naccarato
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - G Sicignano
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - R Ruggieri
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - G Di Paola
- Statistic science faculty, university of Palermo, Palermo, Italy
| | - A Massocco
- Breast surgery, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - S Gori
- Medical oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| | - F Alongi
- Radiation oncology, Sacro Cuore-Don Calabria hospital, Negrar, Verona, Italy
| |
Collapse
|
79
|
Osei E, Darko J, Fleck A, White J, Kiciak A, Redekop R, Gopaul D. Dosimetric evaluation of whole-breast radiation therapy: clinical experience. Med Dosim 2015; 40:355-65. [PMID: 26119108 DOI: 10.1016/j.meddos.2015.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 04/15/2015] [Accepted: 05/09/2015] [Indexed: 01/28/2023]
Abstract
Radiation therapy of the intact breast is the standard therapy for preventing local recurrence of early-stage breast cancer following breast conservation surgery. To improve patient standard of care, there is a need to define a consistent and transparent treatment path for all patients that reduces significance variations in the acceptability of treatment plans. There is lack of consistency among institutions or individuals about what is considered an acceptable treatment plan: target coverage vis-à-vis dose to organs at risk (OAR). Clinical trials usually resolve these issues, as the criteria for an acceptable plan within the trial (target coverage and doses to OAR) are well defined. We developed an institutional criterion for accepting breast treatment plans in 2006 after analyzing treatment data of approximately 200 patients. The purpose of this article is to report on the dosimetric review of 623 patients treated in the last 18 months to evaluate the effectiveness of the previously developed plan acceptability criteria and any possible changes necessary to further improve patient care. The mean patient age is 61.6 years (range: 25.2 to 93.0 years). The mean breast separation for all the patients is 21.0cm (range: 12.4 to 34.9cm), and the mean planning target volume (PTV_eval) (breast volume for evaluation) is 884.0cm(3) (range: 73.6 to 3684.6cm(3)). Overall, 314 (50.4%) patients had the disease in the left breast and 309 (49.6%) had it in the right breast. A total of 147 (23.6%) patients were treated using the deep inspiration breath-hold (DIBH) technique. The mean normalized PTV_eval receiving at least 92% (V92% PD) and 95% (V95% PD) of the prescribed dose (PD) are more than 99% and 97%, respectively, for all patients. The mean normalized PTV_eval receiving at least 105% (V105% PD) of the PD is less than 1% for all groups. The mean homogeneity index (HI), uniformity index (UI), and conformity index (CI) for the PTV_eval are 0.09 (range: 0.05 to 0.15), 1.07 (range: 0.46 to 1.11), and 0.98 (range: 0.92 to 1.0), respectively. Our data confirm the significant advantage of using DIBH to reduce heart dose when compared with the free-breathing technique. The p values analyses of the results for the V5Gy, V10Gy, V15Gy, V20Gy, and V30Gy for the heart comparing DIBH and free-breathing techniques are well less than 0.05 (i.e., p < 0.05). However, similar analyses for the lung give values greater than 0.05 (i.e., p > 0.05), indicating that there is no significant difference in lung dose comparing the 2 treatment techniques.
Collapse
Affiliation(s)
- Ernest Osei
- Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, Ontario, Canada; Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada; Department of Systems Design, University of Waterloo, Waterloo, Ontario, Canada.
| | - Johnson Darko
- Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, Ontario, Canada; Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Andre Fleck
- Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, Ontario, Canada
| | - Jana White
- Department of Radiation Therapy, Grand River Regional Cancer Centre, Kitchener, Ontario, Canada
| | - Alexander Kiciak
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Rachel Redekop
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Darin Gopaul
- Department of Radiation Oncology, Grand River Regional Cancer Centre, Kitchener, Ontario, Canada
| |
Collapse
|
80
|
Fenoglietto P, Bourgier C, Riou O, Lemanski C, Azria D. Impact de la modulation d’intensité dans l’irradiation des aires ganglionnaires du cancer du sein. Cancer Radiother 2015; 19:265-70. [DOI: 10.1016/j.canrad.2015.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 02/11/2015] [Indexed: 01/18/2023]
|
81
|
Toxicité aiguë cutanée de l’irradiation mammaire avec modulation d’intensité avec technique de champ dans le champ (optimisation avec pré-segmentation). Cancer Radiother 2015; 19:82-8. [DOI: 10.1016/j.canrad.2014.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 09/14/2014] [Accepted: 10/06/2014] [Indexed: 11/22/2022]
|
82
|
Impact of breathing on post-mastectomy radiotherapy: a dosimetric comparison between intensity-modulated radiotherapy and 3D tangential radiotherapy. JOURNAL OF RADIOTHERAPY IN PRACTICE 2015. [DOI: 10.1017/s1460396915000096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AbstractPurposeTo quantify the effect of breathing motion on post-mastectomy radiotherapy with three-dimensional (3D) tangents and intensity-modulated radiotherapy (IMRT)Materials and methodsPatients trained for breath-hold underwent routine free breathing (FB) computed tomography (CT) simulation for radiotherapy as well as additional CT scans with breath held at the end of normal inspiration (NI scan) and expiration (NE scan) for study. The FB scan was used to develop both tangents and IMRT plans. To simulate breathing, each plan was copied and applied on NI and NE scans. The respiratory parameters of the patients as well as the dosimetric data with both the plans were analysed.ResultsBreathing motion resulted in mean fall in target coverage (V95) with IMRT by more than 5% when compared with tangents, and this effect significantly correlated with higher tidal volume. There was also a decrease in the mean target minimal dose by 20–25% with IMRT when compared with 10–12% with tangents, attributable to breathing motion. However, the cardiac dose crossed the limit (V25<10%) with breathing in the 3D tangents plan.ConclusionsDosimetric coverage of the chest wall is sensitive to breathing motion for the IMRT technique when compared with standard tangents, especially in patients with large tidal volume.
Collapse
|
83
|
Chung MJ, Lee GJ, Suh YJ, Lee HC, Lee SW, Jeong S, Lee JW, Kim SH, Kang DG, Lee JH. Setup Error and Effectiveness of Weekly Image-Guided Radiation Therapy of TomoDirect for Early Breast Cancer. Cancer Res Treat 2015; 47:774-80. [PMID: 25687857 PMCID: PMC4614198 DOI: 10.4143/crt.2014.189] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/05/2014] [Indexed: 12/16/2022] Open
Abstract
PURPOSE This study investigated setup error and effectiveness of weekly image-guided radiotherapy (IGRT) of TomoDirect for early breast cancer. MATERIALS AND METHODS One hundred and fifty-one breasts of 147 consecutive patients who underwent breast conserving surgery followed by whole breast irradiation using TomoDirect in 2012 and 2013 were evaluated. All patients received weekly IGRT. The weekly setup errors from simulation to each treatment in reference to chest wall and surgical clips were measured. Random, systemic, and 3-dimensional setup errors were assessed. Extensive setup error was defined as 5 mm above the margin in any directions. RESULTS All mean errors were within 3 mm of all directions. The mean angle of gantry shifts was 0.6°. The mean value of absolute 3-dimensional setup error was 4.67 mm. In multivariate analysis, breast size (odds ratio, 2.82; 95% confidence interval, 1.00 to 7.90) was a significant factor for extensive error. The largest significant deviation of setup error was observed in the first week of radiotherapy (p < 0.001) and the deviations gradually decreased with time. The deviation of setup error was 5.68 mm in the first week and within 5 mm after the second week. CONCLUSION In this study, there was a significant association between breast size and significant setup error in breast cancer patients who received TomoDirect. The largest deviation occurred in the first week of treatment. Therefore, patients with large breasts should be closely observed on every fraction and fastidious attention is required in the first fraction of IGRT.
Collapse
Affiliation(s)
- Mi Joo Chung
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Guk Jin Lee
- Department of Internal Medicine, Seoul, St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young Jin Suh
- Department of Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyo Chun Lee
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sea-Won Lee
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Songmi Jeong
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jeong Won Lee
- Department of Radiation Oncology, Kyungpook National University, Daegu, Korea
| | - Sung Hwan Kim
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dae Gyu Kang
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong Hoon Lee
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| |
Collapse
|
84
|
Lin Y, Wang B. Dosimetric absorption of intensity-modulated radiotherapy compared with conventional radiotherapy in breast-conserving surgery. Oncol Lett 2014; 9:9-14. [PMID: 25435927 PMCID: PMC4246647 DOI: 10.3892/ol.2014.2704] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 07/01/2014] [Indexed: 01/29/2023] Open
Abstract
The aim of this study was to investigate the dosimetric benefits between intensity-modulated radiotherapy (IMRT) and conventional radiotherapy (CR) among patients receiving breast-conserving surgery. A dosimetric comparison of IMRT and CR was evaluated in 20 patients with early-stage breast cancer using a three-dimensional treatment planning system. The prescribed mammary gland dose was completed in 25 fractions with a total dose of 5,000 cGy. Homogeneity of the planning target volume (PTV), irradiation dose and volume of organs at risk (OARs) were evaluated through a dose-volume histogram. For the homogeneity of PTV, the average volume receiving 95% of the prescribed dose in the IMRT plan was similar to that in the CR plan (97 vs. 96%, respectively). With regard to normal tissue sparing in OARs, the ipsilateral lung V20 in the IMRT and CR plans was 27.8 and 20.8%, respectively. The mean dose and V30 of the heart for five patients were 598.4 versus 348.3 cGy and 10.06 versus 5.3%, respectively. The mean dose sparing the heart or lung was markedly reduced in the IMRT plan compared with the CR plan. The results of the current study demonstrated that whole breast IMRT improves PTV dose distribution and improves normal tissue sparing in OARs.
Collapse
Affiliation(s)
- Yang Lin
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Benzhong Wang
- Department of Breast Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| |
Collapse
|
85
|
Automation and Intensity Modulated Radiation Therapy for Individualized High-Quality Tangent Breast Treatment Plans. Int J Radiat Oncol Biol Phys 2014; 90:688-95. [DOI: 10.1016/j.ijrobp.2014.06.056] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 06/09/2014] [Accepted: 06/20/2014] [Indexed: 11/18/2022]
|
86
|
Constituent components of out-of-field scatter dose for 18-MV intensity modulated radiation therapy versus 3-dimensional conformal radiation therapy: a comparison with 6-MV and implications for carcinogenesis. Int J Radiat Oncol Biol Phys 2014; 90:645-53. [PMID: 25084609 DOI: 10.1016/j.ijrobp.2014.05.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 05/09/2014] [Accepted: 05/27/2014] [Indexed: 11/21/2022]
Abstract
PURPOSE To characterize and compare the components of out-of-field dose for 18-MV intensity modulated radiation therapy (IMRT) versus 3-dimensional conformal radiation therapy (3D-CRT) and their 6-MV counterparts and consider implications for second cancer induction. METHODS AND MATERIALS Comparable plans for each technique/energy were delivered to a water phantom with a sloping wall; under full scatter conditions; with field edge abutting but outside the bath to prevent internal/phantom scatter; and with shielding below the linear accelerator head to attenuate head leakage. Neutron measurements were obtained from published studies. RESULTS Eighteen-megavolt IMRT produces 1.7 times more out-of-field scatter than 18-MV 3D-CRT. In absolute terms, however, differences are just approximately 0.1% of central axis dose. Eighteen-megavolt IMRT reduces internal/patient scatter by 13%, but collimator scatter (C) is 2.6 times greater than 18-MV 3D-CRT. Head leakage (L) is minimal. Increased out-of-field photon scatter from 18-MV IMRT carries out-of-field second cancer risks of approximately 0.2% over and above the 0.4% from 18-MV 3D-CRT. Greater photoneutron dose from 18-MV IMRT may result in further maximal, absolute increased risk to peripheral tissue of approximately 1.2% over 18-MV 3D-CRT. Out-of-field photon scatter remains comparable for the same modality irrespective of beam energy. Machine scatter (C+L) from 18 versus 6 MV is 1.2 times higher for IMRT and 1.8 times for 3D-CRT. It is 4 times higher for 6-MV IMRT versus 3D-CRT. Reduction in internal scatter with 18 MV versus 6 MV is 27% for 3D-CRT and 29% for IMRT. Compared with 6-MV 3D-CRT, 18-MV IMRT increases out-of-field second cancer risk by 0.2% from photons and adds 0.28-2.2% from neutrons. CONCLUSIONS Out-of-field photon dose seems to be independent of beam energy for both techniques. Eighteen-megavolt IMRT increases out-of-field scatter 1.7-fold over 3D-CRT because of greater collimator scatter despite reducing internal/patient scatter. Out-of-field carcinogenic risk is thus increased (but improved in-field dose conformity may offset this). Potentially increased carcinogenic risk should be weighed against any benefit 18-MV IMRT may provide.
Collapse
|
87
|
Jones S, Fitzgerald R, Owen R, Ramsay J. Quantifying intra- and inter-fractional motion in breast radiotherapy. J Med Radiat Sci 2014; 62:40-6. [PMID: 26229666 PMCID: PMC4364805 DOI: 10.1002/jmrs.61] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 12/20/2022] Open
Abstract
Introduction The magnitude of intra- and inter-fractional variation in the set up of breast cancer patients treated with tangential megavoltage photon beams was investigated using an electronic portal imaging device (EPID). Methods Daily cine-EPID images were captured during delivery of the tangential fields for ten breast cancer patients treated in the supine position. Measurements collected from each image included the central lung distance (CLD), central flash distance (CFD), superior axial measurement (SAM) and the inferior axial measurement (IAM). The variation of motion within a fraction (intra-fraction) and the variation between fractions (inter-fraction) was analysed to quantify set up variation and motion due to respiration. Results Altogether 3775 EPID images were collected from 10 patients. The effect of respiratory motion during treatment was <0.1 cm standard deviation (SD) in the anterior–posterior (AP) direction. The inter-fraction movement caused by variations in daily set up was larger at 0.28 cm SD in the AP direction. Superior–inferior (SI) variation was more difficult to summarise and proved unreliable as the measurements were taken to an ambiguous point on the images. It was difficult to discern true SI movement from that implicated by AP movement. Conclusion There is minimal intra-fractional chest wall motion due to respiration during treatment. Inter-fractional variation was larger, however, on average it remained within departmental tolerance (0.5 cm) for set up variations. This review of our current breast technique provides confidence in the feasibility of utilising advanced treatment techniques (field-in-field, intensity modulated radiotherapy or volumetric modulated arc therapy) following a review of the current imaging protocol.
Collapse
Affiliation(s)
- Scott Jones
- Division of Cancer Services, Radiation Oncology Mater Centre, Princess Alexandra Hospital Brisbane, Australia
| | - Rhys Fitzgerald
- Division of Cancer Services, Princess Alexandra Hospital Brisbane, Australia
| | - Rebecca Owen
- Division of Cancer Services, Radiation Oncology Mater Centre, Princess Alexandra Hospital Brisbane, Australia
| | - Jonathan Ramsay
- Division of Cancer Services, Radiation Oncology Mater Centre, Princess Alexandra Hospital Brisbane, Australia
| |
Collapse
|
88
|
Park YK, Park S, Wu HG, Kim S. A new plan quality index for dose painting radiotherapy. J Appl Clin Med Phys 2014; 15:4941. [PMID: 25207424 PMCID: PMC5875497 DOI: 10.1120/jacmp.v15i4.4941] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/09/2014] [Accepted: 03/31/2014] [Indexed: 12/02/2022] Open
Abstract
Dose painting radiotherapy is considered a promising radiotherapy technology that enables more targeted dose delivery to tumor rich regions while saving critical normal tissues. Obviously, dose painting planning would be more complicated and hard to be evaluated with current plan quality index systems that were developed under the paradigm of uniform dose prescription. In this study, we introduce a new plan quality index, named “index of achievement (IOA)” that assesses how close the planned dose distribution is to the prescribed one in a dose painting radiotherapy plan. By using voxel‐based comparison between planned and prescribed dose distributions in its formulation, the index allows for a single‐value evaluation regardless of the number of prescribed dose levels, which cannot be achieved with the conventional indices such as conventional homogeneity index. Benchmark calculations using patient data demonstrated feasibility of the index not only for contour‐based dose painting plans, but also for dose painting by numbers plans. Also, it was shown that there is strong correlation between the new index and conventional indices, which indicates a potential of the new index as an alternative to conventional ones in general radiotherapy plan evaluation. PACS number: 87.55.D‐
Collapse
|
89
|
Tanaka H, Hayashi S, Hoshi H. Determination of the optimal method for the field-in-field technique in breast tangential radiotherapy. JOURNAL OF RADIATION RESEARCH 2014; 55:769-773. [PMID: 24536020 PMCID: PMC4099991 DOI: 10.1093/jrr/rrt233] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 12/03/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
Several studies have reported the usefulness of the field-in-field (FIF) technique in breast radiotherapy. However, the methods for the FIF technique used in these studies vary. These methods were classified into three categories. We simulated a radiotherapy plan with each method and analyzed the outcomes. In the first method, a pair of subfields was added to each main field: the single pair of subfields method (SSM). In the second method, three pairs of subfields were added to each main field: the multiple pairs of subfields method (MSM). In the third method, subfields were alternately added: the alternate subfields method (ASM). A total of 51 patients were enrolled in this study. The maximum dose to the planning target volume (PTV) (Dmax) and the volumes of the PTV receiving 100% of the prescription dose (V100%) were calculated. The thickness of the breast between the chest wall and skin surface was measured, and patients were divided into two groups according to the median. In the overall series, the average V100% with ASM (60.3%) was significantly higher than with SSM (52.6%) and MSM (48.7%). In the thin breast group as well, the average V100% with ASM (57.3%) and SSM (54.2%) was significantly higher than that with MSM (43.3%). In the thick breast group, the average V100% with ASM (63.4%) was significantly higher than that with SSM (51.0%) and MSM (54.4%). ASM resulted in better dose distribution, regardless of the breast size. Moreover, planning for ASM required a relatively short time. ASM was considered the most preferred method.
Collapse
Affiliation(s)
- Hidekazu Tanaka
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu 501-1194, Japan
| | - Shinya Hayashi
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu 501-1194, Japan
| | - Hiroaki Hoshi
- Department of Radiology, Gifu University Hospital, Yanagido 1-1, Gifu 501-1194, Japan
| |
Collapse
|
90
|
Xu M, Huang H, Xiong Y, Peng B, Zhou Z, Wang D, Yang X. Combined chemotherapy plus endostar with sequential stereotactic radiotherapy as salvage treatment for recurrent esophageal cancer with severe dyspnea: A case report and review of the literature. Oncol Lett 2014; 8:291-294. [PMID: 24959263 PMCID: PMC4063583 DOI: 10.3892/ol.2014.2087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 02/26/2014] [Indexed: 12/22/2022] Open
Abstract
For the majority of inoperable esophageal cancer cases, chemoradiotherapy is the most suitable treatment option. Cetuximab may provide certain benefits, however, this can be an expensive therapy. Additionally, stereotactic body radiation therapy (SBRT) is typically contraindicated for esophageal cancer due to the potential for esophageal perforation and stenosis. The use of combined chemotherapy plus endostar with sequential SBRT for the treatment of esophageal squamous cancer has not been reported. In the current study, the case of a 71-year-old female with esophageal squamous cancer diagnosed 2 years prior is presented. Surgery and four cycles of cisplatin plus 5-fluorouracil chemotherapy had been administered. The patient showed recurrence at the paratracheal lymph node, exhibited severe dyspnea (grade III) and required a semi-liquid diet. Four cycles of the docetaxel, 5-fluorouracil and nedaplatin regimen plus endostar (3 mg; days 1-14; intravenously) with sequential SBRT (3300 cGy in 10 fractions) was administered. Following treatment, the symptoms of the patient completely disappeared, and objective efficacy evaluation indicated complete remission. At the time of writing, the patient is living without discomfort and the progression-free survival is >8 months. In conclusion, the present case indicates that combined treatment of chemotherapy and endostar with sequential stereotactic radiotherapy is a safe and effective option for the management of esophageal cancer.
Collapse
Affiliation(s)
- Mingfang Xu
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Huan Huang
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Yanli Xiong
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Bo Peng
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Zejun Zhou
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Dong Wang
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| | - Xueqin Yang
- Cancer Center, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
| |
Collapse
|
91
|
Ciammella P, Podgornii A, Galeandro M, Micera R, Ramundo D, Palmieri T, Cagni E, Iotti C. Toxicity and cosmetic outcome of hypofractionated whole-breast radiotherapy: predictive clinical and dosimetric factors. Radiat Oncol 2014; 9:97. [PMID: 24762173 PMCID: PMC4029983 DOI: 10.1186/1748-717x-9-97] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 03/09/2014] [Indexed: 11/25/2022] Open
Abstract
Purpose The objective of this study is to evaluate toxicity and cosmetic outcome in breast cancer patients treated with adjuvant hypo fractionated radiotherapy to the whole breast, and to identify the risk factors for toxicity. Methods and materials Two hundred twelve women with early breast cancer underwent conserving surgery were enrolled in the study. The patients received 40.05 Gy in 15 daily fractions, 2.67 Gy per fraction. The boost to the tumor bed was administered with a total dose of 9 Gy in 3 consecutive fractions in 55 women. Physician-rated acute and late toxicity and cosmetic outcome (both subjective and objective) were prospectively assessed during and after radiotherapy. Results In our population study the mean age was 63 with the 17% (36 pts) of the women younger than 50 years. The median follow-up was 34 months. By the end of RT, 35 patients out of 212 (16%) no acute toxicity, according to the RTOG criteria, while 145 (68%) and 31 patients (15%) developed grade 1 and grade 2 acute skin toxicity, respectively. Late skin toxicity evaluation was available for all 212 patients with a minimum follow up of 8 months. The distribution of toxicity was: 39 pts (18%) with grade 1 and 2 pts (1%) with grade 2. No worse late skin toxicity was observed. Late subcutaneous grade 0-1 toxicity was recorded in 208 patients (98%) and grade 2 toxicity in 3 patients (2%), while grade 3 was observed in 1 patient only. At last follow up, a subjective and objective good or excellent cosmetic outcome was reported in 93% and 92% of the women, respectively. At univariate and multivariate analysis, the late skin toxicity was correlated with the additional boost delivery (p=0.007 and p=0.023). Regarding the late subcutaneous tissue, a correlation with diabetes was found (p=0.0283). Conclusion These results confirm the feasibility and safety of the hypofractionated radiotherapy in patients with early breast cancer. In our population the boost administration was resulted to be a significant adverse prognostic factor for acute and late toxicity. Long-term follow up is need to confirm this finding.
Collapse
Affiliation(s)
- Patrizia Ciammella
- Radiation Oncology Unit, Department of Advanced Technology, Arcispedale Santa Maria Nuova, Istituto di Ricovero e Cura a Carattere Scientifico, Viale Risorgimento 80, 42123 Reggio Emilia Italy.
| | | | | | | | | | | | | | | |
Collapse
|
92
|
Shaitelman SF, Khan AJ, Woodward WA, Arthur DW, Cuttino LW, Bloom ES, Shah C, Freedman GM, Wilkinson JB, Babiera GV, Julian TB, Vicini FA. Shortened radiation therapy schedules for early-stage breast cancer: a review of hypofractionated whole-breast irradiation and accelerated partial breast irradiation. Breast J 2014; 20:131-46. [PMID: 24479632 DOI: 10.1111/tbj.12232] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Breast-conserving therapy consisting of segmental mastectomy followed by whole-breast irradiation (WBI) has become widely accepted as an alternative to mastectomy as a treatment for women with early-stage breast cancer. WBI is typically delivered over the course of 5-6 weeks to the whole breast. Hypofractionated whole-breast irradiation and accelerated partial breast irradiation have developed as alternative radiation techniques for select patients with favorable early-stage breast cancer. These radiation regimens allow for greater patient convenience and the potential for decreased health care costs. We review here the scientific rationale behind delivering a shorter course of radiation therapy using these distinct treatment regimens in this setting as well as an overview of the published data and pending trials comparing these alternative treatment regimens to WBI.
Collapse
Affiliation(s)
- Simona F Shaitelman
- Department of Radiation Oncology, M.D. Anderson Cancer Center, Houston, Texas
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
93
|
Jagsi R. Progress and controversies: radiation therapy for invasive breast cancer. CA Cancer J Clin 2014; 64:135-52. [PMID: 24357525 DOI: 10.3322/caac.21209] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 09/27/2013] [Accepted: 09/30/2013] [Indexed: 01/29/2023] Open
Abstract
Radiation therapy is a critical component of the multidisciplinary management of invasive breast cancer. In appropriately selected patients, radiation not only improves local control, sparing patients the morbidity and distress of local recurrence, but it also improves survival by preventing seeding and reseeding of distant metastases from persistent reservoirs of locoregional disease. In recent years, considerable progress has been made toward improving our ability to select patients most likely to benefit from radiotherapy and to administer treatment in ways that maximize clinical benefit while minimizing toxicity and burden. This article reviews the role of radiation therapy in invasive breast cancer management, both after breast-conserving surgery and after mastectomy. It focuses particularly on emerging evidence that helps to define the clinical situations in which radiotherapy is indicated, the appropriate targets of treatment, and optimal approaches for minimizing both the toxicity and the burden of treatment, all in the context of the evolving surgical and systemic management of this common disease. It includes a discussion of new approaches in breast cancer radiotherapy, including hypofractionation and intensity modulation, as well as a discussion of promising avenues for future research.
Collapse
Affiliation(s)
- Reshma Jagsi
- Associate Professor, Department of Radiation Oncology, Research Investigator, Center for Bioethics and Social Science in Medicine, University of Michigan, Ann Arbor, MI
| |
Collapse
|
94
|
Abo-Madyan Y, Aziz MH, Aly MMOM, Schneider F, Sperk E, Clausen S, Giordano FA, Herskind C, Steil V, Wenz F, Glatting G. Second cancer risk after 3D-CRT, IMRT and VMAT for breast cancer. Radiother Oncol 2014; 110:471-6. [PMID: 24444525 DOI: 10.1016/j.radonc.2013.12.002] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 12/02/2013] [Accepted: 12/21/2013] [Indexed: 01/01/2023]
Abstract
PURPOSE Second cancer risk after breast conserving therapy is becoming more important due to improved long term survival rates. In this study, we estimate the risks for developing a solid second cancer after radiotherapy of breast cancer using the concept of organ equivalent dose (OED). MATERIALS AND METHODS Computer-tomography scans of 10 representative breast cancer patients were selected for this study. Three-dimensional conformal radiotherapy (3D-CRT), tangential intensity modulated radiotherapy (t-IMRT), multibeam intensity modulated radiotherapy (m-IMRT), and volumetric modulated arc therapy (VMAT) were planned to deliver a total dose of 50 Gy in 2 Gy fractions. Differential dose volume histograms (dDVHs) were created and the OEDs calculated. Second cancer risks of ipsilateral, contralateral lung and contralateral breast cancer were estimated using linear, linear-exponential and plateau models for second cancer risk. RESULTS Compared to 3D-CRT, cumulative excess absolute risks (EAR) for t-IMRT, m-IMRT and VMAT were increased by 2 ± 15%, 131 ± 85%, 123 ± 66% for the linear-exponential risk model, 9 ± 22%, 82 ± 96%, 71 ± 82% for the linear and 3 ± 14%, 123 ± 78%, 113 ± 61% for the plateau model, respectively. CONCLUSION Second cancer risk after 3D-CRT or t-IMRT is lower than for m-IMRT or VMAT by about 34% for the linear model and 50% for the linear-exponential and plateau models, respectively.
Collapse
Affiliation(s)
- Yasser Abo-Madyan
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; Department of Radiation Oncology and Nuclear Medicine (NEMROCK), Faculty of Medicine, Cairo University, Egypt
| | - Muhammad Hammad Aziz
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; Department of Physics, COMSATS Institute of Information and Technology, Islamabad, Pakistan
| | - Moamen M O M Aly
- Medical Radiation Physics/Radiation Protection, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; Department of Radiotherapy and Nuclear Medicine, South Egypt Cancer Institute, Assiut University, Egypt
| | - Frank Schneider
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Elena Sperk
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Sven Clausen
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; Medical Radiation Physics/Radiation Protection, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Frank A Giordano
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Carsten Herskind
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Volker Steil
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Frederik Wenz
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Gerhard Glatting
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; Medical Radiation Physics/Radiation Protection, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany.
| |
Collapse
|
95
|
Cilla S, Digesù C, Macchia G, Deodato F, Morganti AG. Comment on “Field-in-field plan does not improve the dosimetric out come compared with the wedged beams plan for breast cancer radiotherapy” by Sun, L.-M.; et al. Med. Dosim. 39:79–82; 2014. Med Dosim 2014; 39:285. [DOI: 10.1016/j.meddos.2014.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/06/2014] [Indexed: 10/25/2022]
|
96
|
Ha B, Suh HS, Lee J, Lee KJ, Lee R, Moon BI. Long-term results of forward intensity-modulated radiation therapy for patients with early-stage breast cancer. Radiat Oncol J 2013; 31:191-8. [PMID: 24501706 PMCID: PMC3912232 DOI: 10.3857/roj.2013.31.4.191] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/10/2013] [Accepted: 10/16/2013] [Indexed: 11/08/2022] Open
Abstract
Purpose To observe long-term clinical outcomes for patients with early-stage breast cancer treated with forward intensity-modulated radiation therapy (IMRT), including local control and clinical toxicities. Materials and Methods We retrospectively analyzed a total of 214 patients with stage I-II breast cancer who were treated with breast conserving surgery followed by adjuvant breast radiation therapy between 2001 and 2008. All patients were treated using forward IMRT. The whole breast was irradiated to a dose of 50 to 50.4 Gy followed by an 8 to 12 Gy electron boost to the surgical bed. Results The median age was 46 years (range, 21 to 82 years) and the medial follow-up time was 7.3 years (range, 2.4 to 11.7 years). Stage T1 was 139 (65%) and T2 was 75 (35%), respectively. Ipsilateral breast recurrence was observed in 3 patients. The 5- and 10-year local control rates were 99.1% and 97.8%, respectively. The cosmetic outcome was evaluated according to the Harvard scale and 89.4% of patients were scored as excellent or good. Conclusion The whole breast radiation therapy as an adjuvant treatment using a forward IMRT technique showed excellent long-term local control as well as favorable outcomes of toxicity and cosmesis.
Collapse
Affiliation(s)
- Boram Ha
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Hyun Suk Suh
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Jihae Lee
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kyung-Ja Lee
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Rena Lee
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Byung In Moon
- Department of General Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| |
Collapse
|
97
|
Lamberth F, Guilbert P, Gaillot-Petit N, Champagne C, Looten-Vieren L, Nguyen TD. [Potential indications for helical tomotherapy in breast cancers]. Cancer Radiother 2013; 18:7-14. [PMID: 24314856 DOI: 10.1016/j.canrad.2013.07.148] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 07/17/2013] [Accepted: 07/23/2013] [Indexed: 12/21/2022]
Abstract
PURPOSE To evaluate the dosimetric gain obtained in either the planning target volume or organs at risk coverage by the use of intensity-modulated radiation therapy in some particular postoperative breast cancers. PATIENTS AND METHOD Prospective dosimetric comparison between monoisocentric conformal radiotherapy and intensity-modulated radiation therapy in nine patient files. RESULTS Using intensity-modulated radiation therapy was shown to improve in each case, at least one conformity, homogeneity, and coverage index either for planning target volumes or for organs at risk. Intensity-modulated radiation therapy was therefore always chosen rather than conformal monoisocentric radiotherapy. CONCLUSIONS Indications to retain intensity-modulated radiation therapy would consist of bilateral lesions, pectus excavatum, past thoracic irradiation (Hodgkin's disease) and complex volumes in obese or overweight patients.
Collapse
Affiliation(s)
- F Lamberth
- Département de radiothérapie, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France
| | - P Guilbert
- Département de radiothérapie, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France
| | - N Gaillot-Petit
- Unité de radiophysique médicale, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France
| | - C Champagne
- Unité de radiophysique médicale, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France
| | - L Looten-Vieren
- Unité de radiophysique médicale, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France
| | - T D Nguyen
- Département de radiothérapie, institut Jean-Godinot, rue du Général-Koenig, 51100 Reims, France.
| |
Collapse
|
98
|
Yao W. A two-point scheme for optimal breast IMRT treatment planning. J Appl Clin Med Phys 2013; 14:4525. [PMID: 24257291 PMCID: PMC5714625 DOI: 10.1120/jacmp.v14i6.4525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 07/17/2013] [Accepted: 07/15/2013] [Indexed: 12/25/2022] Open
Abstract
We propose an approach to determining optimal beam weights in breast/chest wall IMRT treatment plans. The goal is to decrease breathing effect and to maximize skin dose if the skin is included in the target or, otherwise, to minimize the skin dose. Two points in the target are utilized to calculate the optimal weights. The optimal plan (i.e., the plan with optimal beam weights) consists of high energy unblocked beams, low energy unblocked beams, and IMRT beams. Six breast and five chest wall cases were retrospectively planned with this scheme in Eclipse, including one breast case where CTV was contoured by the physician. Compared with 3D CRT plans composed of unblocked and field-in-field beams, the optimal plans demonstrated comparable or better dose uniformity, homogeneity, and conformity to the target, especially at beam junction when supraclavicular nodes are involved. Compared with nonoptimal plans (i.e., plans with nonoptimized weights), the optimal plans had better dose distributions at shallow depths close to the skin, especially in cases where breathing effect was taken into account. This was verified with experiments using a MapCHECK device attached to a motion simulation table (to mimic motion caused by breathing).
Collapse
|
99
|
Badakhshi H, Kaul D, Nadobny J, Wille B, Sehouli J, Budach V. Image-guided volumetric modulated arc therapy for breast cancer: a feasibility study and plan comparison with three-dimensional conformal and intensity-modulated radiotherapy. Br J Radiol 2013; 86:20130515. [PMID: 24167182 DOI: 10.1259/bjr.20130515] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To test the feasibility of volumetric modulated arc therapy (VMAT) in breast cancer and to compare it with three-dimensional conformal radiotherapy (3D-CRT) as conventional tangential field radiotheraphy (conTFRT). METHODS 12 patients (Stage I, 8: 6 left breast cancer and 2 right breast cancer; Stage II, 4: 2 on each side). Three plans were calculated for each case after breast-conserving surgery. Breast was treated with 50 Gy in four patients with supraclavicular lymph node inclusion, and in eight patients without the node inclusion. Multiple indices and dose parameters were measured. RESULTS V95% was not achieved by any modality. Heterogeneity index: 0.16 (VMAT), 0.13 [intensity-modulated radiotherapy (IMRT)] and 0.14 (conTFRT). Conformity index: 1.06 (VMAT), 1.15 (IMRT) and 1.69 (conTFRT). For both indices, IMRT was more effective than VMAT (p=0.009, p=0.002). Dmean and V20 for ipsilateral lung were lower for IMRT than VMAT (p=0.0001, p=0.003). Dmean, V2 and V5 of contralateral lung were lower for IMRT than VMAT (p>0.0001, p=0.005). Mean dose and V5 to the heart were lower for IMRT than for VMAT (p=0.015, p=0.002). CONCLUSION The hypothesis of equivalence of VMAT to IMRT was not confirmed for planning target volume parameter or dose distribution to organs at risk. VMAT was inferior to IMRT and 3D-CRT with regard to dose distribution to organs at risk, especially at the low dose level. ADVANCES IN KNOWLEDGE New technology VMAT is not superior to IMRT or conventional radiotherapy in breast cancer in any aspect.
Collapse
Affiliation(s)
- H Badakhshi
- Department of Radiation Oncology, Charité School of Medicine and University Hospital Berlin, Berlin, Germany
| | | | | | | | | | | |
Collapse
|
100
|
Mukesh MB, Barnett GC, Wilkinson JS, Moody AM, Wilson C, Dorling L, Chan Wah Hak C, Qian W, Twyman N, Burnet NG, Wishart GC, Coles CE. Randomized controlled trial of intensity-modulated radiotherapy for early breast cancer: 5-year results confirm superior overall cosmesis. J Clin Oncol 2013; 31:4488-95. [PMID: 24043742 DOI: 10.1200/jco.2013.49.7842] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE There are few randomized controlled trial data to confirm that improved homogeneity with simple intensity-modulated radiotherapy (IMRT) decreases late breast tissue toxicity. The Cambridge Breast IMRT trial investigated this hypothesis, and the 5-year results are reported. PATIENTS AND METHODS Standard tangential plans of 1,145 trial patients were analyzed; 815 patients had inhomogeneous plans (≥ 2 cm(3) receiving 107% of prescribed dose: 40 Gy in 15 fractions over 3 weeks) and were randomly assigned to standard radiotherapy (RT) or replanned with simple IMRT; 330 patients with satisfactory dose homogeneity were treated with standard RT and underwent the same follow-up as the randomly assigned patients. Breast tissue toxicities were assessed at 5 years using validated methods: photographic assessment (overall cosmesis and breast shrinkage compared with baseline pre-RT photographs) and clinical assessment (telangiectasia, induration, edema, and pigmentation). Comparisons between different groups were analyzed using polychotomous logistic regression. RESULTS On univariate analysis, compared with standard RT, fewer patients in the simple IMRT group developed suboptimal overall cosmesis (odds ratio [OR], 0.68; 95% CI, 0.48 to 0.96; P = .027) and skin telangiectasia (OR, 0.58; 95% CI, 0.36 to 0.92; P = .021). No evidence of difference was seen for breast shrinkage, breast edema, tumor bed induration, or pigmentation. The benefit of IMRT was maintained on multivariate analysis for both overall cosmesis (P = .038) and skin telangiectasia (P = .031). CONCLUSION Improved dose homogeneity with simple IMRT translates into superior overall cosmesis and reduces the risk of skin telangiectasia. These results are practice changing and should encourage centers still using two-dimensional RT to implement simple breast IMRT.
Collapse
Affiliation(s)
- Mukesh B Mukesh
- Mukesh B. Mukesh, Gillian C. Barnett, Jennifer S. Wilkinson, Anne M. Moody, Charles Wilson, Wendi Qian, Nicola Twyman, Neil G. Burnet, and Charlotte E. Coles, Cambridge University Hospitals National Health Service Foundation Trust; Gillian C. Barnett, Charleen Chan Wah Hak, and Neil G. Burnet, University of Cambridge; and Gordon C. Wishart, Anglia Ruskin University, Cambridge, United Kingdom
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|