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Reports of Practical Oncology and Radiotherapy

Vaitheeswaran Ranganathan, K Joseph Maria Das
AIM: An empirical scheme called "anatomy-guided segment counting (AGSC)" is proposed for automatic selection of maximum number of segments (NOS) for direct machine parameter optimization (DMPO). BACKGROUND: Direct machine parameter optimization (DMPO) requires the user to define the maximum number of segments (NOS) in order to proceed with an optimization process. Till date there is no established approach to arrive at an optimal and case-specific maximum NOS in DMPO, and this step is largely left to the planner's experience...
November 2016: Reports of Practical Oncology and Radiotherapy
Maree Wood, Amara Fonseca, David Sampson, Andrew Kovendy, Justin Westhuyzen, Thomas Shakespeare, Kirsty Turnbull
AIM: The aim of the retrospective study was to develop a planning class solution for prostate intensity-modulated radiotherapy (IMRT) that achieved target and organs-at-risk (OAR) doses within acceptable departmental protocol criteria using the Monaco treatment planning system (Elekta-CMS Software, MO, USA). BACKGROUND: Advances in radiation therapy technology have led to a re-evaluation of work practices. Class solutions have the potential to produce highly conformal plans in a time-efficient manner...
November 2016: Reports of Practical Oncology and Radiotherapy
Ritika R Harjani, Janaki Manur Gururajachar, Umamaheswari Krishnaswamy
AIM: The aim of this prospective study was to assess Somnolence Syndrome (SS) in patients undergoing radiation to the brain. BACKGROUND: SS is one of the sequelae of radiation to the brain, which is observed within three months of radiation. This is a self-limiting condition and a failure to diagnose leads to unnecessary investigations. This study was undertaken to objectively and subjectively analyze the occurrence, clinical presentation and severity of SS. MATERIALS AND METHODS: Thirty-three patients receiving radiation to the brain were included in the study...
November 2016: Reports of Practical Oncology and Radiotherapy
Giorgio Spatola, Laura Frosio, Marco Losa, Antonella Del Vecchio, Martina Piloni, Pietro Mortini
BACKGROUND: Gamma knife radiosurgery is an effective and safe treatment modality in the management of pituitary adenomas. Internal carotid occlusion is a rare but possible complication of Gamma Knife Radiosurgery for lesions within the cavernous sinus. AIM: To stress the importance of considering the Internal carotid artery as an organ at risk in cavernous sinus invading adenomas and reduce the dose delivered to this structure whenever possible. CASE DESCRIPTION: We report two cases of asymptomatic occlusion of the intracavernous segment of the internal carotid artery seven years after treatment in acromegalic patients...
November 2016: Reports of Practical Oncology and Radiotherapy
Milly Buwenge, Savino Cilla, Alessandra Guido, Lucia Giaccherini, Gabriella Macchia, Francesco Deodato, Silvia Cammelli, Francesco Cellini, Gian C Mattiucci, Vincenzo Valentini, Markus Stock, Alessio G Morganti
AIM: Aim of this study was to perform a planning feasibility analysis of a 3-level dose prescription using an IMRT-SIB technique. BACKGROUND: Radiation therapy of locally advanced pancreatic cancer should administer a minimum dose to the duodenum and a very high dose to the vascular infiltration areas to improve the possibility of a radical resection. MATERIALS AND METHODS: Fifteen patients with pancreatic head adenocarcinoma and vascular involvement were included...
November 2016: Reports of Practical Oncology and Radiotherapy
Zbigniew Szutkowski, Andrzej Kawecki, Andrzej Jarząbski, Zofia Laskus, Romuald Krajewski, Wojciech Michalski, Paweł Kukołowicz
AIM: The goal of this prospective study was to assess the effectiveness of a hypofractionated accelerated regime in treatment of the larynx cancer. BACKGROUND: Multiple radiotherapy delivery regimes are used for treatment of the larynx cancer. Hypofractionated regimes could provide similar results with reduced use of radiotherapy facilities. MATERIAL AND METHODS: 223 patients with squamous cell carcinoma of the upper or middle larynx have been treated with 63 Gy delivered in 28 fractions of 2...
November 2016: Reports of Practical Oncology and Radiotherapy
Heping Xu, Gillian Hatcher
AIM: This study aims to investigate whether there are dosimetric advantages to using VMAT (Volumetric Modulated Arc Therapy) for left-sided chest-wall patients over the three-dimensional conformal field-in-field (FinF) technique. BACKGROUND: There is a lack of dosimetric studies dedicated for chest-wall patients. Potential dosimetric advantage could be obtained using VMAT due to complex geometry of PTVs (Planning Target Volumes) and OARs (Organs at Risk) in chest-wall and lymph nodes...
November 2016: Reports of Practical Oncology and Radiotherapy
Tiago Ventura, Maria do Carmo Lopes, Brigida Costa Ferreira, Leila Khouri
AIM: In this work, a graphical method for radiotherapy treatment plan assessment and comparison, named SPIDERplan, is proposed. It aims to support plan approval allowing independent and consistent comparisons of different treatment techniques, algorithms or treatment planning systems. BACKGROUND: Optimized plans from modern radiotherapy are not easy to evaluate and compare because of their inherent multicriterial nature. The clinical decision on the best treatment plan is mostly based on subjective options...
November 2016: Reports of Practical Oncology and Radiotherapy
Juan-Francisco Calvo-Ortega, Sandra Moragues, Miquel Pozo, Joan Casals
AIM: To investigate the viability of placing the treatment isocenter at the patient midline for breast cancer radiotherapy in order to avoid the risk of collisions during image-guided setup and treatment delivery. BACKGROUND: The use of kilovoltage orthogonal setup images has spread in last years in breast radiotherapy. There is a potential risk of an imaging system-patient collision when the isocenter is laterally placed. MATERIALS AND METHODS: Twenty IMRT plans designed by placing the isocenter within the breast volume ("plan_ref"), were retrospectively replanned by shifting the isocenter at the patient's midline ("plan_off-breast")...
November 2016: Reports of Practical Oncology and Radiotherapy
Fawzi Abu Hijla, Sameer Yaser, Kamal Al-Rabi, Akram Al-Ibraheem, Omar Khzouz, Laith Al Khairi, Hamza Ghatasheh, Ayat Al-Oqaily, Jamal Khader
A 37-year-old female with unusual presentation of metastatic non-small cell lung cancer (NSCLC), as she presented with symptoms related to clival bone metastases. This case highlights the unpredictable presentations and the variety of metastatic sites of which metastatic NSCLC could be presented.
November 2016: Reports of Practical Oncology and Radiotherapy
Ademar Caldeira, William Correia Trinca, Thais Pires Flores, Andrea Barleze Costa, Claudio de Sá Brito, Karen Loureiro Weigert, Maryana Schwartzhaupt Matos, Carmela Nicolini, Fernando Mariano Obst
Kindler syndrome1, 2 is a genetic disorder mainly characterized by increased skin fragility and photosensitivity,3, 4 making the use of treatments based on radiation difficult or even prohibited. Thus, cases reporting Kindler syndrome patients treated with radiotherapy are rare. In this study, we report clinical outcomes and care provided for a rare case of a Kindler syndrome patient submitted to radiotherapy. Diagnosed with squamous cell carcinoma involving the buccal mucosa, the patient was exclusively treated with radiotherapy, with 70 Gy delivered on the PTV with the Volumetric Modulated Arc technique...
November 2016: Reports of Practical Oncology and Radiotherapy
Mo Manji, Juanita Crook, Matt Schmid, Rasika Rajapakshe
AIM: We compare urethrogram delineation of the caudal aspect of the anastomosis to the recommended guidelines of post prostatectomy radiotherapy. BACKGROUND: Level one evidence has established the indications for, and importance of, adjuvant radiotherapy following radical prostatectomy. Several guidelines have recently addressed delineation of the prostate bed target volume including identification of the vesico-urethral anastomosis, taken as the first CT slice caudal to visible urine in the bladder neck...
November 2016: Reports of Practical Oncology and Radiotherapy
Osamu Tanaka, Masahiko Oguchi, Takayoshi Iida, Senji Kasahara, Hideko Goto, Takeshi Takahashi
AIM: To determine the efficacy of low-dose palliative radiotherapy in patients with refractory aggressive lymphoma. BACKGROUND: There are few reports on the administration of palliative radiotherapy to patients with aggressive lymphoma. MATERIALS AND METHODS: The present study included 11 patients with 30 sites of aggressive lymphoma (diffuse large cell lymphoma, n = 7; mantle cell lymphoma, n = 2; follicular large cell lymphoma, n = 1; and peripheral T cell lymphoma, n = 1)...
November 2016: Reports of Practical Oncology and Radiotherapy
Nithya Kanakavelu, E James Jebaseelan Samuel
AIM: To verify the accuracy of automatic image registration (IR) between the planning kilo voltage computed tomography (kV CT) and megavoltage cone beam computed tomography (MV CBCT) datasets using phantom and patient images. BACKGROUND: The automatic IR between MV CBCT and planning kV CT is a fast solution for performing online image guided radiotherapy (IGRT). The IR accuracy has to be verified periodically as it directly affects patient setup accuracy. MATERIALS AND METHODS: The automatic IR accuracy was evaluated using image quality phantom acquired with different kV CT slice thickness, different MV CBCT acquisition MUs and reconstruction slice size and thickness...
September 2016: Reports of Practical Oncology and Radiotherapy
Somayeh Gholami, Hamid Reza Mirzaei, Ali Jabbary Arfaee, Ramin Jaberi, Hassan Ali Nedaie, Seied Rabi Mahdavi, Eftekhar Rajab Bolookat, Ali S Meigooni
AIM: Verification of dose distributions for gynecological (GYN) brachytherapy implants using EBT Gafchromic film. BACKGROUND: One major challenge in brachytherapy is to verify the accuracy of dose distributions calculated by a treatment planning system. MATERIALS AND METHODS: A new phantom was designed and fabricated using 90 slabs of 18 cm × 16 cm × 0.2 cm Perspex to accommodate a tandem and Ovoid assembly, which is normally used for GYN brachytherapy treatment...
September 2016: Reports of Practical Oncology and Radiotherapy
Patricia Sebastian, Rajesh Balakrishnan, Bijesh Yadav, Subhashini John
AIM: The aim of this study was to analyze the outcome and toxicities and its correlation to patient related and treatment related factors. BACKGROUND: Pituitary adenomas are treated by radiation therapy (RT) as one of the modalities along with surgery and medical therapy. RT to pituitary adenomas is a challenge due to adjacent dose limiting structures such as optic apparatus and hypothalamus. MATERIALS AND METHODS: Between January 2004 and December 2010, 94 patients treated for pituitary adenoma with RT who had hospital records of a minimum follow-up of 1 year were included in the analysis...
September 2016: Reports of Practical Oncology and Radiotherapy
Daisuke Kawahara, Shuichi Ozawa, Yuji Murakami, Takeo Nakashima, Masamichi Aita, Shintaro Tsuda, Yusuke Ochi, Takuro Okumura, Hirokazu Masuda, Yoshimi Ohno, Yasushi Nagata
AIM: In high-precision radiation therapy, kilovoltage cone-beam computed tomography plays an important role in verifying the position of patient and localization of the target. However, the exposure dose is a problem with kilovoltage cone-beam computed tomography. Flux overlap region increases the patient dose around the center when the scan is performed in a full-scan mode. We assessed the influence of flux overlap region in a full-scan mode to understand the relationship between dose and image quality and investigated methods to achieve a dose reduction...
September 2016: Reports of Practical Oncology and Radiotherapy
Mourougan Sinnatamby, Vivekanandan Nagarajan, Reddy Kanipakam Sathyanarayana, Gunaseelan Karunanidhi, Vivekanandam Singhavajala
AIM: The study intends to compare (192)Ir source against the (60)Co source for interstitial breast metal implant in high dose rate brachytherapy. BACKGROUND: Few studies have been reported to compare (60)Co and (192)Ir on HDR brachytherapy in gynaecology and prostate cancer and very few with reference to breast cancer. MATERIALS AND METHODS: Twenty patients who had undergone interstitial template guided breast implant were treated in HDR (192)Ir brachytherapy unit...
September 2016: Reports of Practical Oncology and Radiotherapy
Waseem Raza, Sushma Agarwal, Koilpillai Joseph Maria Das, Sellepolyam Kaliyaperumal Senthil Kumar, Punita Lal
AIM: To quantify and compare setup errors between small and large breast patients undergoing intact breast radiotherapy. METHODS: 20 patients were inducted. 10 small/moderate size breast in arm I and 10 large breast in arm II. Two orthogonal and one lateral tangent portal images (PIs) were obtained and analyzed for systematic (Σ) and random (σ) errors. Effect of no action level (NAL) was also evaluated retrospectively. RESULTS: 142 PIs were analyzed...
September 2016: Reports of Practical Oncology and Radiotherapy
Sahel Heydarheydari, Negin Farshchian, Abbas Haghparast
AIM: The aim of the present study is to quantify differences in dose calculations caused by using CA and determine if the resulting differences are clinically significant. BACKGROUND: The influence of contrast agents (CA) on radiation dose calculations must be taken into account in treatment planning. MATERIALS AND METHODS: Eleven patients with pelvic cancers were included in this study and two sets of CTs were taken for each patient (without and with CA) in the same position and coordinates...
September 2016: Reports of Practical Oncology and Radiotherapy
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