نتایج جستجو برای: imaging radiotherapy planning
تعداد نتایج: 700763 فیلتر نتایج به سال:
The aim of this study was to evaluate the impact of integrated positron emission tomography (PET)/computed tomography (CT) imaging on staging and radiotherapy treatment volume definition of non-small cell lung cancer (NSCLC). Thirty-nine patients with NSCLC referred to the Department of Radiation Oncology of Gulhane Military Medical Academy, for radical radiotherapy between June 2011 and Decemb...
INTRODUCTION Glomus tumors are benign, slow growing tumors originating from paraganglionic tissue, mostly located at the carotid bifurcation, jugular foramen, cervical portion vagus nerve, and middle ear cavity. Radiotherapy is treatment of choice for patients with intracranial extension, and patients with bilateral and multiple tumors, or patients who are inoperable. CASE PRESENTATION We pre...
Introduction: Recently, magnetic resonance spectroscopic imaging (MRSI), as a functional imaging method, has been used for clinical target volume definition. In this study, we used this method to define the target volume in prostate radiotherapy. Material and Method: In this study, we used images of 20 prostate cancer cases. MRSI and MRI images were fused with CT images. Then, treatment plannin...
Effective treatment for carcinoma of the lung remains one of the biggest challenges in oncology. Radical radiotherapy may be a curative option for patients who are unsuitable for radical surgery either because of disease stage or because of co-morbidity. Long-term disease control with radical radiotherapy is disappointing with only about 6% of patients treated being alive at 5 years. Technologi...
BACKGROUND PET-CT is becoming more and more important in various aspects of oncology. Until recently it was used mainly as part of diagnostic procedures and for evaluation of treatment results. With development of personalized radiotherapy, volumetric and radiobiological characteristics of individual tumour have become integrated in the multistep radiotherapy (RT) planning process. Standard ana...
Radiotherapy for esophageal cancer relies on cross-sectional imaging to identify the entire extent of tumor. Rarely, the exact limits of the tumor may be radiologically occult. Lipiodol is a contrast agent which has been used successfully to mark cancers of the bladder and lung for radiotherapy and surgical resection. We report a patient with an adenocarcinoma of the gastroesophageal junction w...
Imaging techniques are increasingly integrated into modern radiotherapy (RT). Multimodal imaging is used to define the target for RT planning and imaging technology is also being integrated into linear accelerators, with the purpose to ensure delivery of radiation with high geometric accuracy. The integration of imaging in RT calls for a stronger collaboration between diagnostic radiologists an...
112 http://oncology.thelancet.com Vol 6 February 2005 Diagnostic imaging, from radiographs to CT, has been used throughout the history of radiotherapy to define the site to which the radiation should be delivered for patients with cancer. Theragnostic imaging is a method by which the radiation dose can be delivered in the four dimensions of space and time to achieve the optimum outcome after ra...
Developments in radiotherapy during the past 10– 15 years, which have been driven largely by technological advances, have been nothing short of remarkable. Significant advances in tumour imaging, in radiotherapy treatment planning, and in dose delivery techniques have all contributed to improved treatment outcomes and have, in some situations, led to important changes in overall therapeutic app...
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