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Lung SBRT

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https://www.readbyqxmd.com/read/28638802/target-migration-from-re-inflation-of-adjacent-atelectasis-during-lung-stereotactic-body-radiotherapy
#1
Bijing Mao, Vivek Verma, Dandan Zheng, Xiaofeng Zhu, Nathan R Bennion, Abhijeet R Bhirud, Maria A Poole, Weining Zhen
Stereotactic body radiotherapy (SBRT) is a widely accepted option for the treatment of medically inoperable early-stage non-small cell lung cancer (NSCLC). Herein, we highlight the importance of interfraction image guidance during SBRT. We describe a case of early-stage NSCLC associated with segmental atelectasis that translocated 15 mm anteroinferiorly due to re-expansion of the adjacent segmental atelectasis following the first fraction. The case exemplifies the importance of cross-sectional image-guided radiotherapy that shows the intended target, as opposed to aligning based on rigid anatomy alone, especially in cases associated with potentially "volatile" anatomic areas...
June 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28637480/institutional-analysis-of-stereotactic-body-radiotherapy-sbrt-for-oligometastatic-lymph-node-metastases
#2
Rosanna Yeung, Jeremy Hamm, Mitchell Liu, Devin Schellenberg
BACKGROUND: In limited metastatic burden of disease, stereotactic body radiotherapy (SBRT) has been shown to achieve high local control rates. It has been hypothesized that SBRT may translate to a better quality of life by delaying the need for systemic chemotherapy and possibly increasing survival. There is limited published literature on the efficacy of SBRT in limited nodal metastases. The primary aim is to review institutional outcomes of patients with solitary or oligometastatic lymph nodes treated with SBRT...
June 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28626632/synchronous-mucinous-and-non-mucinous-lung-adenocarcinomas-with-different-epidermal-growth-mutational-status
#3
Rita Linhas, David Tente, Margarida Dias, Ana Barroso
In recent years, the spread of more-sensitive diagnostic methods has resulted in an increase of synchronous multiple primary lung cancer diagnosis. Nevertheless, its occurrence is still rare. Distinction between synchronous lesions from second independent primary tumors is a problem when dealing with multiple lung tumors, particularly if the histological type is the same. We present a case report of a 78-year-old female patient referred to our institution due to pneumonia. A subsequent thoracic computed tomography (CT) was performed showing two suspicious lesions, one in the right upper lobe and the other in the right inferior lobe...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28624021/assessment-of-treatment-response-after-lung-stereotactic-body-radiotherapy-using-diffusion-weighted-magnetic-resonance-imaging-and-positron-emission-tomography-a-pilot-study
#4
Takashi Shintani, Yukinori Matsuo, Yusuke Iizuka, Takamasa Mitsuyoshi, Shigeaki Umeoka, Yuji Nakamoto, Takashi Mizowaki, Kaori Togashi, Masahiro Hiraoka
BACKGROUND AND PURPOSE: There is no early predictor of treatment response after lung stereotactic body radiotherapy (SBRT). We conducted this pilot study to evaluate whether serial diffusion weighted magnetic resonance imaging (DW-MRI) or positron emission tomography (PET) could predict response after SBRT. MATERIAL AND METHODS: Early stage non-small cell lung cancer patients who received SBRT were eligible. DW-MRI and PET were undertaken pretreatment and every 3 months after SBRT in the first year...
July 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28623121/radiomics-based-assessment-of-radiation-induced-lung-injury-after-stereotactic-body-radiotherapy
#5
Angel Moran, Megan E Daly, Stephen S F Yip, Tokihiro Yamamoto
BACKGROUND: Over 50% of patients who receive stereotactic body radiotherapy (SBRT) develop radiographic evidence of radiation-induced lung injury. Radiomics is an emerging approach that extracts quantitative features from image data, which may provide greater value and a better understanding of pulmonary toxicity than conventional approaches. We aimed to investigate the potential of computed tomography-based radiomics in characterizing post-SBRT lung injury. METHODS: A total of 48 diagnostic thoracic computed tomography scans (acquired prior to SBRT and at 3, 6, and 9 months post-SBRT) from 14 patients were analyzed...
May 25, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28620905/stereotactic-body-radiation-therapy-as-an-alternative-to-surgery-in-early-stage-non-small-cell-lung-cancer
#6
REVIEW
Kenneth Rosenzweig
Stereotactic body radiation therapy (SBRT) is a novel radiation technique that allows a high dose of radiation to be delivered to a tumor with relatively low dose to the surrounding normal tissue. SBRT has achieved extraordinary clinical success in patients with inoperable early-stage non-small-cell lung cancer (NSCLC). Local control of approximately 90% at 2 to 5 years has been demonstrated in multiple trials. In comparisons with surgical resection (in patients who are fit candidates for surgery), SBRT has provided similar local control, but was associated with worse survival, probably due to differences in the underlying patient populations...
June 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28612018/treatment-options-in-oligometastatic-disease-stereotactic-body-radiation-therapy-focus-on-colorectal-cancer
#7
REVIEW
Aaron T Wild, Yoshiya Yamada
BACKGROUND: Improvements in systemic therapy for metastatic colorectal cancer (CRC) have markedly extended survival, rendering local control of metastases to critical organs of increasing importance, especially in the oligometastatic setting where the disease may not yet have acquired the ability to widely disseminate. While surgical resection remains the gold standard for oligometastases in many organs, stereotactic body radiation therapy (SBRT) presents a non-invasive alternative for achieving local control...
March 2017: Visceral Medicine
https://www.readbyqxmd.com/read/28610704/variation-of-the-prescription-dose-using-the-analytical-anisotropic-algorithm-in-lung-stereotactic-body-radiation-therapy
#8
Daisuke Kawai, Ryo Takahashi, Tatsuya Kamima, Hiromi Baba, Toshijiro Yamamoto, Yoko Kubo, Satoru Ishibashi, Yoshihiro Higuchi, Kensuke Tani, Norifumi Mizuno, Shunta Jinno, Hidenobu Tachibana
PURPOSE: The aim of the present investigation was to evaluate the dosimetric variation regarding the analytical anisotropic algorithm (AAA) relative to other algorithms in lung stereotactic body radiation therapy (SBRT). We conducted a multi-institutional study involving six institutions using a secondary check program and compared the AAA to the Acuros XB (AXB) in two institutions. METHODS: All lung SBRT plans (128 patients) were generated using the AAA, pencil beam convolution with the Batho (PBC-B) and adaptive convolve (AC)...
June 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28608966/next-generation-sequencing-and-clinical-outcomes-of-patients-with-lung-adenocarcinoma-treated-with-stereotactic-body-radiotherapy
#9
Richard J Cassidy, Xinyan Zhang, Pretesh R Patel, Joseph W Shelton, Chase E Escott, Gabriel L Sica, Michael R Rossi, Charles E Hill, Conor E Steuer, Rathi N Pillai, Suresh S Ramalingam, Taofeek K Owonikoko, Madhusmita Behera, Seth D Force, Felix G Fernandez, Walter J Curran, Kristin A Higgins
BACKGROUND: Genetic aberrations are well characterized in lung adenocarcinomas (LACs) and clinical outcomes have been influenced by targeted therapies in the advanced setting. Stereotactic body radiotherapy (SBRT) is the standard-of-care therapy for patients with nonoperable, early-stage LAC, but to the authors' knowledge, no information is available regarding the impact of genomic changes in these patients. The current study sought to determine the frequency and clinical impact of genetic aberrations in this population...
June 13, 2017: Cancer
https://www.readbyqxmd.com/read/28596092/stereotactic-body-radiation-therapy-for-early-stage-non-small-cell-lung-cancer-executive-summary-of-an-astro-evidence-based-guideline
#10
Gregory M M Videtic, Jessica Donington, Meredith Giuliani, John Heinzerling, Tomer Z Karas, Chris R Kelsey, Brian E Lally, Karen Latzka, Simon S Lo, Drew Moghanaki, Benjamin Movsas, Andreas Rimner, Michael Roach, George Rodrigues, Shervin M Shirvani, Charles B Simone, Robert Timmerman, Megan E Daly
PURPOSE: This guideline presents evidence-based recommendations for stereotactic body radiation therapy (SBRT) in challenging clinical scenarios in early-stage non-small cell lung cancer (NSCLC). METHODS AND MATERIALS: The American Society for Radiation Oncology convened a task force to perform a systematic literature review on 4 key questions addressing: (1) application of SBRT to operable patients; (2) appropriate use of SBRT in tumors that are centrally located, large, multifocal, or unbiopsied; (3) individual tailoring of SBRT in "high-risk" clinical scenarios; and (4) SBRT as salvage therapy after recurrence...
June 5, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28595431/palliative-efficacy-and-local-control-of-conventional-radiotherapy-for-lung-metastases
#11
Christopher Fleming, Andreas Rimner, Amanda Foster, Kaitlin M Woo, Zhigang Zhang, Abraham J Wu
BACKGROUND: The lung is a common site of metastasis, and conventionally fractionated radiotherapy (CFRT) is commonly used to treat such metastases, usually to palliate symptoms. However, no data exists to quantify palliation or local control (LC) of CFRT for secondary lung tumors. We aimed to describe the palliative effect of CFRT for lung metastases at our institution, and compare its LC with that of stereotactic body radiation therapy (SBRT). METHODS: 182 patients received 190 courses of RT for lung metastases (99 CFRT, 91 SBRT)...
March 21, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28589432/comparative-efficacy-and-toxicity-of-induction-chemotherapy-with-concurrent-stereotactic-body-radiotherapy-and-stereotactic-body-radiotherapy-with-subsequent-chemotherapy-in-patients-with-clinical-stage-t1-3n0m0-non-small-cell-lung-carcinoma
#12
Y Sun, Q Duan, X Chen, W Chen, X Jin, R Wu
PURPOSE: We compared the clinical efficacy and toxicity of stereotactic body radiotherapy with induction chemotherapy and concurrent radiochemotherapy vs stereotactic body radiotherapy with subsequent chemotherapy in patients with clinical stage T1-3N0M0 non-small cell lung carcinoma. METHODS: We retrospectively analyzed 38 patients with c-stage T1-3N0M0 non-small cell lung carcinoma who received stereotactic body radiotherapy. All patients received six cycles of chemotherapy...
June 6, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28587027/what-to-do-when-that-unbiopsied-pet-avid-sbrt-treated-peripheral-lung-mass-recurs-in-the-mediastinum-as-small-cell-carcinoma
#13
J M Holland, J Walker, S Rhodes, M Kishore, D A Elliott
No abstract text is available yet for this article.
May 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28586983/igrt-for-lung-sbrt-mvct-versus-kv-cbct
#14
G Baran, T Bossenberger, J W Burmeister, P A Paximadis
No abstract text is available yet for this article.
May 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28577952/stereotactic-body-radiotherapy-for-operable-early-stage-non-small-cell-lung-cancer
#15
Takahisa Eriguchi, Atsuya Takeda, Naoko Sanuki, Yuichiro Tsurugai, Yousuke Aoki, Yohei Oku, Yu Hara, Takeshi Akiba, Naoyuki Shigematsu
PURPOSE: To analyze outcomes of stereotactic body radiotherapy (SBRT) for operable patients with early-stage non-small cell lung cancer (NSCLC) and to evaluate factors associated with outcomes. METHODS: We retrospectively analyzed operable patients with NSCLC, staged as cT1-2N0M0, treated with SBRT between 2006 and 2015. Both biopsy-proven and clinically diagnosed NSCLC were included. Local control and survival rates were calculated and compared between subsets of patients...
July 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28577947/indications-for-invasive-mediastinal-staging-in-patients-with-early-non-small-cell-lung-cancer-staged-with-pet-ct
#16
Sarah J Gao, Anthony W Kim, Jonathan T Puchalski, Kyle Bramley, Frank C Detterbeck, Daniel J Boffa, Roy H Decker
PURPOSE/OBJECTIVE(S): Appropriate use of invasive mediastinal staging in patients with clinically node-negative NSCLC staged by PET-CT is critical in selecting patients for curative-intent therapy such as surgery or SBRT, but little data exists to guide this decision-making. We examined a large population of patients with clinical stage I NSCLC referred for mediastinoscopy or EBUS to find risk factors for occult N2 lymph nodes and determine which patients benefit from invasive staging...
July 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28577827/normal-tissue-constraints-for-abdominal-and-thoracic-stereotactic-body-radiotherapy
#17
REVIEW
Erqi L Pollom, Alexander L Chin, Maximilian Diehn, Billy W Loo, Daniel T Chang
Although stereotactic body radiotherapy (SBRT) or stereotactic ablative radiotherapy has become an established standard of care for the treatment of a variety of malignancies, our understanding of normal tissue dose tolerance with extreme hypofractionation remains immature. Since Timmerman initially proposed normal tissue dose constraints for SBRT in the 2008 issue of Seminars of Radiation Oncology, experience with SBRT has grown, and more long-term clinical outcome data have been reported. This article reviews the modern toxicity literature and provides updated clinically practical and useful recommendations of SBRT dose constraints for extracranial sites...
July 2017: Seminars in Radiation Oncology
https://www.readbyqxmd.com/read/28576581/in-vivo-dosimetry-for-lung-radiotherapy-including-sbrt
#18
REVIEW
Boyd M C McCurdy, Peter M McCowan
SBRT for lung cancer is being rapidly adopted as a treatment option in modern radiotherapy centres. This treatment is one of the most complex in common clinical use, requiring significant expertise and resources. It delivers a high dose per fraction (typically ∼6-30Gy/fraction) over few fractions. The complexity and high dose delivered in only a few fractions make powerful arguments for the application of in vivo dosimetry methods for these treatments to enhance patient safety. In vivo dosimetry is a group of techniques with a common objective - to estimate the dose delivered to the patient through a direct measurement of the treatment beam(s)...
May 30, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28574221/validation-of-a-method-for-in%C3%A2-vivo-3d-dose-reconstruction-in-sbrt-using-a-new-transmission-detector
#19
Yuji Nakaguchi, Takeshi Ono, Masato Maruyama, Yoshinobu Shimohigashi, Yudai Kai
Stereotactic body radiation therapy (SBRT) involves the delivery of substantially larger doses over fewer fractions than conventional therapy. Therefore, SBRT treatments will strongly benefit patients using vivo patient dose verification, because the impact of the fraction is large. For in vivo measurements, a commercially available quality assurance (QA) system is the COMPASS system (IBA Dosimetry, Germany). For measurements, the system uses a new transmission detector (Dolphin, IBA Dosimetry). In this study, we evaluated the method for in vivo 3D dose reconstruction for SBRT using this new transmission detector...
June 2, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28573929/potential-for-interfraction-motion-to-increase-esophageal-toxicity-in-lung-sbrt
#20
Anthony Hoai-Nam Pham, Ellen Yorke, Andreas Rimner, Abraham Jing-Ching Wu
PURPOSE: To characterize the effect of the relative motion of esophagus and tumor on radiation doses to the esophagus in patients treated with stereotactic body radiation therapy for central lung tumors. METHODS AND MATERIALS: Fifty fractions of stereotactic body radiation therapy in 10 patients with lung tumors within 2.5 cm of the esophagus were reviewed. The esophagus was delineated on each treatment's cone-beam computed tomography scan and compared to its position on the planning scan...
January 1, 2017: Technology in Cancer Research & Treatment
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