Introduction: Using contrast medium in diagnosis and identifying of an organ from its surrounding tissue is very useful. These contrast mediums alter radiation absorption of studied organs. The aim of this study is to identify the influences of contrast media in treatment planning system of the pelvis.   Materials and Methods: Seven patients with pelvis area ...

CHARLES BRANDON FREDERICK: SEGMENTING THE MALE PELVIC ORGANS FROM LIMITED ANGLE IMAGES WITH APPLICATION TO ART. (Under the direction of David Lalush and Stephen Pizer) Prostate cancer is the second leading cause of cancer deaths in men, and external beam radiotherapy is a common method for treating prostate cancer. In a clinically state-of-the-art radiotherapy protocol, CT images are taken at t...

Radiotherapy dose calculation requires accurate Computed Tomography (CT) imaging while tissue delineation may necessitate the use of contrast agents (CA). Acquiring these two sets is a common practice in radiotherapy. This study aims to evaluate effect CA on calculations. Two hundred and twenty-six volumetric modulated arc therapy (VMAT) patients that had planning CT with (CCT) non-contrast (NC...

Concurrent chemoradiotherapy is considered the standard treatment for locally advanced cancer cervix (LACC). Radiotherapy commonly administered by a three-dimensional conformal radiotherapy (3DCRT) approach followed brachytherapy (BT). High dose rate (HDR) BT administered; however, several drawbacks exist including invasive technique, pain, requirement of anesthesia, and operative risks. We ass...

Background & Aims: Owing to the significant role of CT images in diagnosis and follow up of patients affected with coronavirus, the imaging section of cancer centers in some countries engaged in providing services to COVID-19 patients. The aim of this study was to introduce a CT-independent photographic-based QA method in some radiotherapy departments where CTs are involved with COVID-19 patien...

background: delivering the maximum dose to tumor while achieving the minimum dose delivery to normal tissue; is the most important goal in external radiotherapy. diode in vivo dosimetry is widely considered to be an important tool for quality improvement of patient care in external radiotherapy. uncertainty in dose delivery should fall within 5% of the prescribed dose as recommended by internat...

The authors describe a low-cost CT scanner integrated with a radiotherapy simulator and designed for treatment planning. The standard rotational gantry and x-ray tube of the simulator are used with a multiwire xenon lonization chamber and simple current-proportional readout system to measure patient attenuation, avoiding problems associated with diagnostic CT scanners in treatment planning. Al...

RATIONALE to evaluate the role of 18F-fluorodeoxyglucose positron emission tomography ([(18)F]FDG-PET) integrated with computer tomography (CT) scan [(18)F]FDG-PET/CT in the staging and target volume definition in Intensity Modulated RapidarcTM Delivery (RA-IMRT) in cervical cancer. METHODS From June 2010 to December 2011, 66 patients affected by cervical cancer, candidates for definitive or ...

Objective: To show a decrease in tumor recurrence and improvement quality of life patients with recurrent cervical cancer.Method: A 58-year-old female patient diagnosed cancer February 2021 was treated for 14 months integrative treatment (ICT) to the size improve chemotherapy-induced peripheral neuropathy (CIPN) nausea. The underwent chemotherapy or concomitant chemoradiation therapy (CCRT) ICT...

Radiation therapy is one of the established modes of cancer treatment. For the safe and effective radiation therapy, it is necessary to plan and deliver the radiation beam accurately. Radiotherapy Simulator helps in identifying the organs at risk and in localising the cancer-affected tissues. For teletherapy, the Simulator would also help in choosing the right radiation beam and aiming it at th...