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Radiotherapy and heart

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https://www.readbyqxmd.com/read/28743616/heart-position-variability-during-voluntary-moderate-deep-inspiration-breath-hold-radiotherapy-for-breast-cancer-determined-by-repeat-cbct-scans
#1
Paul van Haaren, Fiere Claassen-Janssen, Ingrid van de Sande, Liesbeth Boersma, Maurice van der Sangen, Coen Hurkmans
Voluntary moderate deep inspiration breath hold (vmDIBH) in left-sided breast cancer radiotherapy reduces cardiac dose. The aim of this study was to investigate heart position variability in vmDIBH using CBCT and to compare this variability with differences in heart position between vmDIBH and free breathing (FB). For 50 patients initial heart position with respect to the field edge (HP-FE) was measured on a vmDIBH planning CT scan. Breath-hold was monitored using an in-house developed vertical plastic stick...
July 22, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28740907/functional-imaging-equivalence-and-proof-of-concept-for-image-guided-adaptive-radiotherapy-with-fixed-gantry-and-rotating-couch
#2
Ilana Feain, Chun-Chien Shieh, Paul White, Ricky O'Brien, Sandra Fisher, William Counter, Peter Lazarakis, David Stewart, Simon Downes, Michael Jackson, Siddhartha Baxi, Brendan Whelan, Kuldeep Makhija, Chen-Yu Huang, Michael Barton, Paul Keall
PURPOSE: The purpose of this article is to present the first imaging experiments to demonstrate the functional equivalence between a conventional rotational gantry and a fixed-beam imaging geometry, and the feasibility of an iterative image-reconstruction technique under gravitational deformation. METHODS AND MATERIALS: Experiments were performed using an Elekta Axesse with Agility MLC and XVI, a custom-built rotating phantom stage, a Catphan QA phantom, and a porcine heart...
October 2016: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740794/tissue-expanders-and-proton-beam-radiotherapy-what-you-need-to-know
#3
Ashley L Howarth, Joshua R Niska, Kenneth Brooks, Aman Anand, Martin Bues, Carlos E Vargas, Raman C Mahabir
Proton beam radiotherapy (PBR) has gained acceptance for the treatment of breast cancer because of unique beam characteristics that allow superior dose distributions with optimal dose to the target and limited collateral damage to adjacent normal tissue, especially to the heart and lungs. To determine the compatibility of breast tissue expanders (TEs) with PBR, we evaluated the structural and dosimetric properties of 2 ex vivo models: 1 model with internal struts and another model without an internal structure...
June 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28711186/megavoltage-2d-topographic-imaging-an-attractive-alternative-to-megavoltage-ct-for-the-localization-of-breast-cancer-patients-treated-with-tomodirect
#4
Philippe Meyer, Fabien Le Pennec, Susanta K Hui, Nicolas Dehaynin, Delphine Jarnet, Matthieu Gantier, Claudine Niederst, Christophe Mazzara, Etienne Baudrier, Vincent Noblet
PURPOSE: To show the usefulness of topographic 2D megavoltage images (MV2D) for the localization of breast cancer patients treated with TomoDirect (TD), a radiotherapy treatment technique with fixed-angle beams performed on a TomoTherapy system. METHODS: A method was developed to quickly localize breast cancer patients treated with TD by registering the MV2D images produced before a TD treatment with reference images reconstructed from a kilovoltage CT simulation scanner and by using the projection of the beam-eye-view TD treatment field...
July 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28708228/clinical-and-subclinical-cardiac-late-effects-in-pediatric-hodgkin-s-lymphoma-survivors
#5
Carlo Materazzo, Maura Massimino, Elisabetta Schiavello, Marta Podda, Lorenza Gandola, Graziella Cefalo, Serena Catania, Cristina Meazza, Ivan Moschetti, Monica Terenziani
PURPOSE: Cardiac late effects are responsible for a significant burden of mortality and morbidity among pediatric Hodgkin's lymphoma (HL) survivors (HLS). The aim of our study was to assess clinical and subclinical cardiac sequelae in a cohort of childhood HLS treated in the 1980s with doxorubicin, bleomycin, vinblastine, and dacarbazine (the ABVD regimen) and limited-field radiotherapy (RT). METHODS: We retrospectively examined a series of HLS treated from 1979 to 1989...
July 8, 2017: Tumori
https://www.readbyqxmd.com/read/28701900/selection-of-patients-with-left-breast-cancer-for-deep-inspiration-breath-hold-radiotherapy-technique-results-of-a-prospective-study
#6
Beata Czeremszyńska, Stanisław Drozda, Michał Górzyński, Lucyna Kępka
AIM: To assess prospectively which patients with left breast cancer have the dosimetric benefit from the use of deep-inspiration breath-hold radiotherapy (DIBH-RT). BACKGROUND: Improvement in selection of patients for DIBH-RT would spare time of radiotherapy staff by removing the need for preparation of two comparative treatment plans. MATERIALS AND METHODS: Thirty-one patients qualified for whole left breast irradiation underwent breath-hold training and their free-breathing (FB) and DIBH planning-CT were included in the analysis of dosimetric outcome...
September 2017: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/28679064/implication-of-micrornas-in-the-development-and-potential-treatment-of-radiation-induced-heart-disease
#7
Branislav Kura, Pavel Babal, Jan Slezak
Radiotherapy is the most commonly used methodology to treat oncological disease that is one of the most widespread cause of death worldwide. Oncological patients cured by radiotherapy applied to the mediastinal area have been shown to suffer from cardiovascular disease. The increase in the prevalence of radiation-induced heart disease has emphasized the need to seek new therapeutic targets to mitigate the negative impact of radiation on the heart. In this regard microRNAs (miRNAs) have received considerable interest...
July 5, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28678434/prospective-study-of-proton-beam-radiation-therapy-for-limited-stage-small-cell-lung-cancer
#8
Jean-Claude M Rwigema, Vivek Verma, Liyong Lin, Abigail T Berman, William P Levin, Tracey L Evans, Charu Aggarwal, Ramesh Rengan, Corey Langer, Roger B Cohen, Charles B Simone
BACKGROUND: Existing data supporting the use of proton-beam therapy (PBT) for limited-stage small cell lung cancer (LS-SCLC) are limited to a single 6-patient case series. This is the first prospective study to evaluate clinical outcomes and toxicities of PBT for LS-SCLC. METHODS: This study prospectively analyzed patients with primary, nonrecurrent LS-SCLC definitively treated with PBT and concurrent chemotherapy from 2011 to 2016. Clinical backup intensity-modulated radiotherapy (IMRT) plans were generated for each patient and were compared with PBT plans...
July 5, 2017: Cancer
https://www.readbyqxmd.com/read/28674678/tangential-field-radiotherapy-for-breast-cancer-the-dose-to-the-heart-and-heart-subvolumes-what-structures-must-be-contoured-in-future-clinical-trials
#9
Marciana Nona Duma, Anne-Claire Herr, Kai Joachim Borm, Klaus Rüdiger Trott, Michael Molls, Markus Oechsner, Stephanie Elisabeth Combs
BACKGROUND AND PURPOSE: The aim of the present study was to evaluate if it is feasible for experienced radiation oncologists to visually sort out patients with a large dose to the heart. This would facilitate large retrospective data evaluations. And in case of an insufficient visual assessment, to define which structures should be contoured and which structures can be skipped as their dose can be derived from other easily contoured structures for future clinical trials. MATERIAL AND METHODS: Planning CTs of left-sided breast cancer patients treated with 3D-conformal radiotherapy by tangential fields were visually divided into two groups: with an estimated high dose (HiD) and with an estimated low dose (LoD) to the heart...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28664175/ct-images-and-radiotherapy-treatment-planning-of-patients-with-breast-cancer-a-dataset
#10
Mohammad Rezaei, Ahmad Mohammadbeigi, Karim Khoshgard, Abbas Haghparast
The data presented here were originally collected for the research project "CT-Scan processing and analysis in patient with breast cancer after radiotherapy". Also, it reported in our study "Prediction of Lung Tissue Damage by Evaluating Clinical and Dosimetric Parameters in Breast Cancer Patients" (Hasanabdali et al., 2016) [1]. This article describes and directly links to 52 subjects referred to Mahdieh Oncology and Radiotherapy Center from February to August 2015. Treatment planning was done for delivering 50 Gy dose to PTV in 25 fractions...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28663003/postoperative-radiotherapy-after-dcis-useful-for-whom
#11
Per Karlsson
The number of patients with ductal carcinoma in situ (DCIS) increases with more widely used screening mammography programs. DCIS accounts for approximately 20% of all new breast cancer diagnoses in these programs and the natural course of this heterogeneous group of pre-invasive lesions is not fully known. Better definition of subgroups benefitting from radiotherapy and knowledge on the natural course of DCIS are important issues for the future management of DCIS. Four large randomized trials have studied the effects of postoperative radiotherapy after breast conserving surgery in patients with wider spectrum of DCIS and all of them have shown radiotherapy to halve the risk of ipsilateral events, however, without any significant effect on breast cancer mortality...
June 26, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28655454/mlc-tracking-for-lung-sabr-reduces-planning-target-volumes-and-dose-to-organs-at-risk
#12
Vincent Caillet, Paul J Keall, Emma Colvill, Nicholas Hardcastle, Ricky O'Brien, Kathryn Szymura, Jeremy T Booth
PURPOSE: Assess the dosimetric impact of multi-leaf collimator (MLC) tracking and mid-ventilation (midV) planning compared with the internal target volume (ITV)-based planning approach for lung Stereotactic Ablative Body Radiotherapy (SABR). METHOD: Ten lung SABR patients originally treated with an ITV-based plan were re-planned according to MLC tracking and midV planning schemes. All plans were delivered on a linac to a motion phantom in a simulated treatment with real lung motions...
June 24, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28654022/recent-advances-in-the-management-of-gastroenteropancreatic-neuroendocrine-tumors-insights-from-the-2017-asco-gastrointestinal-cancers-symposium
#13
Renuka Iyer, Alexandria T Phan, J Philip Boudreaux
Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are rare malignancies that originate in the gastrointestinal system. GEP-NETs are typically indolent, but tumors known as "functional" secrete hormones that can lead to a complex of symptoms, including flushing, diarrhea, bronchospasm, and valvular heart disease. Management of patients with GEP-NETs requires a multidisciplinary approach, as treatment modalities include surgery, radiology, and pharmacotherapy. The available pharmacologic agents have increased in recently, and now include cytotoxic chemotherapies, somatostatin analogues, multitargeted tyrosine kinase inhibitors, mammalian target of rapamycin inhibitors, and radioisotopic radiotherapies...
April 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28652810/an-effective-deep-inspiration-breath-hold-radiotherapy-technique-for-left-breast-cancer-impact-of-post-mastectomy-treatment-nodal-coverage-and-dose-schedule-on-organs-at-risk
#14
Lynsey Rice, Christy Goldsmith, Melanie Ml Green, Susan Cleator, Patricia M Price
BACKGROUND: We developed, applied, and prospectively evaluated a novel deep-inspiration breath-hold (DIBH) screening and delivery technique to optimize cardiac sparing in left-breast radiotherapy (RT) at our clinic. The impact of set-up and dose variables upon organs at risk (OAR) dose in DIBH RT was investigated. METHODS AND MATERIALS: All patients with left-breast cancer referred between 2011 and 2014 - of all disease stages, set-up variations, and dose prescriptions - were included...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28651599/dosimetric-evaluation-of-synthetic-ct-for-magnetic-resonance-only-based-radiotherapy-planning-of-lung-cancer
#15
Hesheng Wang, Hersh Chandarana, Kai Tobias Block, Thomas Vahle, Matthias Fenchel, Indra J Das
BACKGROUND: Interest in MR-only treatment planning for radiation therapy is growing rapidly with the emergence of integrated MRI/linear accelerator technology. The purpose of this study was to evaluate the feasibility of using synthetic CT images generated from conventional Dixon-based MRI scans for radiation treatment planning of lung cancer. METHODS: Eleven patients who underwent whole-body PET/MR imaging following a PET/CT exam were randomly selected from an ongoing prospective IRB-approved study...
June 26, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28646251/cardiac-dose-sparing-effects-of-deep-inspiration-breath-hold-in-left-breast-irradiation-is-imrt-more-beneficial-than-vmat
#16
Mazen Sakka, Leonie Kunzelmann, Martin Metzger, Gerhard G Grabenbauer
BACKGROUND: Given the reduction in death from breast cancer, as well as improvements in overall survival, adjuvant radiotherapy is considered the standard treatment for breast cancer. However, left-sided breast irradiation was associated with an increased rate of fatal cardiovascular events due to incidental irradiation of the heart. Recently, considerable efforts have been made to minimize cardiac toxicity of left-sided breast irradiation by new treatment methods such as deep-inspiration breath-hold (DIBH) and new radiation techniques, particularly intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT)...
June 23, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28643731/cardiotoxic-effects-of-radiotherapy-and-strategies-to-reduce-them-in-patients-with-breast-cancer-an-overview
#17
REVIEW
Katarzyna Rygiel
Cardiotoxicity of various anticancer therapies, including radiotherapy (RT), can lead to cardiovascular (CV) complications, and their severity depends on many factors, including the site of action, the applied dose, the method of administration, the presence of pre-existing CV diseases, or CV risk factors, the individual patient characteristics, and the current or previous use of antineoplastic therapies. Cardiotoxicity can occur immediately upon administration of the anticancer therapy or it may have a delayed onset (months or years after the treatment)...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28620463/recent-advances-in-the-management-of-wilms-tumor
#18
REVIEW
Roberto I Lopes, Armando Lorenzo
The objective of this article is to present an overview of recent trends in the management of Wilms' tumor. With improved survival rates in the past few decades, critical long-term adverse therapy effects (such as renal insufficiency, secondary malignancies, and heart failure) and prevention measures (i.e. nephron-sparing surgery and minimizing the use of radiotherapy) have gained worldwide attention. Specific disease biomarkers that could help stratify high-risk from low-risk patients, and therefore fine-tune management, are in great demand...
2017: F1000Research
https://www.readbyqxmd.com/read/28618843/risk-of-cardiac-death-among-cancer-survivors-in-the-united-states-a-seer-database-analysis
#19
Omar Abdel-Rahman
 Background: Population-based data on the risk of cardiac death among cancer survivors are needed. This scenario was evaluated in cancer survivors (>5 years) registered within the Surveillance, Epidemiology and End Results (SEER) database. METHODS: The SEER database was queried using SEER*Stat to determine the frequency of cardiac death compared to other causes of death; and to determine heart disease-specific and cancer-specific survival rates in survivors of each of the 10 most common cancers in men and women in the SEER database...
June 21, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28610630/osteosarcoma-of-the-lower-limb-metastasized-to-the-septum-and-right-side-of-the-heart-a-case-report
#20
Elisha Osati, Alice Kaijage, Reuben Muta, Peter Muhoka, Merckris Mango, Peter Kisenge, Bashir Nyangasa, Pedro Pallangyo, Delillah Kimambo, Mohamed Janabi
BACKGROUND: Metastatic cardiac tumors are far more common than primary tumors. Although the hematogenous spread of osteosarcoma is well known, the imaging findings of cardiovascular involvement by osteosarcoma are seldom reported and can be difficult to recognize. CASE PRESENTATION: A 21-year-old man of African descent presented to our center complaining of shortness of breath, awareness of heart beats, easy fatigability, swelling of lower limbs, and left-side chest discomfort for the past 6 months getting worse for the last 3 months prior to his third readmission...
June 13, 2017: Journal of Medical Case Reports
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