A literature review has been made on the pelvic recurrence of rectal cancer using the MedLine, Ovid, EMBASE, Cochrane and Cinahl data bases. Assessment of the locoregional recurrence must be made using imaging tests in order to rule out the presence of metastasis, as well as for locating its exact location within the pelvis. As the only curative treatment should be complete resection of the rec...

we describe a patient with newly diagnosed limy cancer. staging was performed with ct and mediastinoscopy. fdg pet scan was performed and confirmed increased metabolic activity in the primary tumor as well as the hilar lymph node. seven months after initial presentation, the patient was found to have two lytic lesions in the pelvis on plain radiograph. hone scan was negative but pet demonstrate...

Introduction: Radiotherapy (RT) plays a major role in the management of breast cancer. Cardiac Toxicity is an important late complication of radiotherapy for left sided Breast cancer. Cardiac morbidity can be minimized through careful treatment planning. Aim: To study the variation of dose to the heart by change in the depth of normalization point during Radiotherapy planning. Settings and desi...

Objective To evaluate the application of treatment planning system (TPS)-assisted large-aperture computed tomography (CT) simulator to percutaneous biopsy. Methods This retrospective study enrolled patients that underwent TPS-assisted CT simulator-guided biopsy from November 2018 December 2019. Retrospective analyses puncture accuracy were compared using paired t-test and a Wilcoxon rank sum te...

This is a case report on stereotaxic (Stereotactic Body Radiotherapy-SBRT) for lung cancer located in the left lower lobe (Segment 6, S6). There have been no reports on marked displacement of the peripheral lung cancer during radiotherapy. A pulmonary nodule was discovered on computed tomography (CT) conducted for a persistent cough in an 87-year-old male. According to diagnostic imaging, this ...

The use of simulator systems for surgical planning and training is growing as the systems become more advanced. One important feature of these systems is the possibility to work on real patient data. This paper presents a method for generating patient-specific models of the femoral bone and the pelvis to be used in a hip surgery simulator. The bones are segmented from volumetric CT data using t...

External radiation beam treatment of cancer tumours involves delivery of invisible radiation beams through the body where internal structures can not be seen. Beam targeting of patient anatomy has to very accurate to achieve the desired therapeutic result. Good understanding of radiotherapy treatment (RT) concepts is essential to training. This paper presents a virtual environment simulator dev...

Purpose: To improve the accuracy in megavoltage photon beam dose calculation in CBCT-based radiation treatment (RT) plans, using a kilovoltage cone-beam computed tomography (CBCT)-todensity-step (CBCT-SF) function. Materials and Methods: The CBCT-SF table is constructed from differential histograms of the voxel values of CBCT and Fan-beam CT (FBCT). From the CBCT histograms, frequency peaks rep...

The study was conducted with the aim to compare four radiotherapy schedules in terms of overall survival (OS), disease-free (DFS), acute & late toxicities locally advanced cervical cancer. A total 73 patients (ECOG 0-1) histologically proven cancer, FIGO stage IIB-IVA were included (December 2020 July 2022). All treated 6 MV Linear Accelerator Volumetric modulated arc therapy (VMAT) whole pelvi...