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PURPOSE Our objective was to conduct a systematic review and meta-analysis of studies assessing the diagnostic performance of (18)F-fluorodeoxyglucose positron emission tomography (FDG PET) with or without computed tomography (CT) in post-treatment response assessment and/or surveillance imaging of head and neck squamous cell carcinoma (HNSCC). METHODS A(More)
This study aimed to establish the feasibility of intensity-modulated radiation therapy (IMRT) in craniospinal irradiation (CSI) using conventional linear accelerator (IMRT_LA) and compare it dosimetrically with helical TomoTherapy (IMRT_Tomo) and three-dimensional conformal radiotherapy (3DCRT). CT datasets of four previously treated patients with(More)
Lung cancer is the commonest source of brain metastases, which has been traditionally treated with Whole Brain Radiation Therapy (WBRT) with or without focal boost. We herein report our preliminary experience of the planning and delivery of WBRT with Simultaneous Integrated Boost (SIB) to brain metastases along with synchronous limited-field thoracic(More)
AIMS To determine variation in the actual doses delivered to the organs at risk and the target in patients treated for localized carcinoma of the prostate using image-guided radiotherapy. MATERIALS AND METHODS Ten patients treated with helical TomoTherapy underwent daily target localization with megavoltage CT, on which the prostate, rectum and bladder(More)
BACKGROUND Linear Accelerator-based Intensity Modulated Radiation Therapy (IMRT), either as step-and shoot (SS) or in dynamic mode, is now considered routine in the definitive management of head and neck squamous cell carcinoma (HNSCC). Helical TomoTherapy (HT) is a new platform to deliver IMRT. This study aims to compare step-and-shoot Intensity Modulated(More)
BACKGROUND AND PURPOSE This study assessed the potential of tomotherapy based Image Guided Radiotherapy (IGRT) to increase the accuracy of bladder irradiation using a 'plan of the day' adaptive radiotherapy (ART) technique. MATERIALS AND METHODS Ten patients with muscle invasive bladder cancer underwent bladder preservation with trimodality therapy in an(More)
The study was designed to compare Helical Tomotherapy (HT) based IMRT and conventional sliding window (SW IMRT) in patients with high risk prostate cancer. Complementary plans with HT and SWIMRT were compared using DVH parameters. The PTV Prostate was prescribed 74 Gy in 37 fractions and the nodal PTV received 55 Gy in 37 fractions by simultaneous(More)
PURPOSE To report early clinical outcomes of helical tomotherapy (HT)-based image-guided intensity-modulated radiation therapy (IMRT) in brain tumors of varying shape, size, and location. MATERIALS AND METHODS Patients with residual, recurrent, and/or progressive low-grade intracranial and skull-base tumors were treated on a prospective protocol of(More)
The method of Acoustic Wavefield Imaging (AWI) offers many advantages over conventional ultrasonic techniques for nondestructive evaluation, and also provides a means of incorporating fixed ultrasonic sensors used for structural health monitoring into subsequent inspections. AWI utilizes these fixed sensors as wave sources and an externally scanned(More)
AIMS Diffuse and extensive involvement of the scalp/skull by malignancy mandates holo-cranial radiotherapy with the aim to deliver homogeneous doses to the planning target volume (PTV) while minimising the dose to surrounding organs at risk (OARs). Previously described techniques result in significant heterogeneity, suboptimal coverage or poor conformity(More)