Helical tomotherapy (HT) was introduced at the Greater Poland Cancer Centre (GPCC) in April 2009. Retrospective analysis included data from treatments performed for first 656 patients treated with HT between May 2009 and 2012 GPCC. In order to evaluate implications on daily workload scheduling of patients, stepwise regression time each component overall treatment time, such as positioning, imaging, registration, irradiation were performed. A detailed included: (1) learning curves optimized...

To establish the optimal planning risk volume (PRV) of lenses for patients who are receiving radiotherapy to nasal cavity and paranasal sinus (NCPSC).Geometrical uncertainties were evaluated a prospective group (G1). Differences between planned delivered maximum doses every fraction. The relationship dose differences geometrical analysed an PRV lenses. Obtained results verified in second (G2) whom calculated was applied.Data 426 observations 15 from G1 investigated. systematic random errors...

Abstract Introduction . The rapid development of new radiotherapy technologies, such as intensity modulated (IMRT) or tomotherapy, has resulted in the capacity to deliver a more homogenous dose target. However, higher doses associated with these techniques are reason for concern because they may increase outside In present study, we compared 3DCRT, IMRT and tomotherapy assess organs at risk (OARs) resulting from photon beam irradiation scattered neutrons. Material methods OARs target were...

The aim of this work was to quantify the variability in pre-treatment lung tumor motion during a single breathing period for 55 non-small cell cancer (NSCLC) targets. influence on volume and position examined by comparing information about from respiratory-correlated four-dimensional computed tomography (4DCT) three-dimensional (3DCT) obtained without respiratory monitoring. impact age, gender, changes immobilization device evaluated. Based performed analysis, significant differences were...

The intra- and inter-observer variability in delineation of the parotids on kilo-voltage computed tomography (kVCT) mega-voltage (MVCT) were examined to establish their impact dose calculation during adaptive head neck helical tomotherapy (HT). Three observers delineated left right for ten randomly selected patients with oropharynx cancer treated HT. pre-treatment kVCT MVCT from first fraction irradiation delineation. procedure was repeated three times by each observer. according...

The aim of this paper is to present a systematic review the current characteristics and recent development commercially available respiratory motion solutions their compensation possibilities in external beam radio­therapy treatment lung cancer. most commonly used X-ray radiotherapeutic technologies are presented, as well division into pre-treatment methods intra-treatment verification. article discusses important technological achievements that allow radiation be safely applied region...

Abstract Background and objectives: To justify the concept of validating conformal versus intensity-modulated approach in treatment non-small cell lung cancer (NSCLC). Materials methods: For 10 patients representative spectrum tumour sizes locations, two plans were prepared: one with three-dimensional radiation therapy (3DCRT) technique other (IMRT) technique. Preliminary measurements performed static conditions. each field angles considered, motion kernel was generated to simulate...

The intra-and inter-observer variability in delineation of the parotids on kilo-voltage computed tomography (kVCT) and mega-voltage (MVCT) were examined to establish their impact dose calculation during adaptive head neck helical tomotherapy (HT).Three observers delineated left right for ten randomly selected patients with oropharynx cancer treated HT.The pre-treatment kVCT MVCT from first fraction irradiation delineation.The procedure was repeated three times by each observer.The according...

Purpose: The aim of this work was to characterize the clinical correctness FFF prostate treatment VMAT plans based on analysis DVHs reconstructed from pre‐verification 2D‐arrays measurements. Methods: new 2D ion chamber array 1500 with rotational phantom cylindrical Octavius 4D and Verisoft 6.1 software DVH option (PTW, Freiburg) were used determine usefulness plans. Ten patients treated high‐fractionated (2 fraction × 7,5 Gy) (TrueBeam, Varian) analyzed using 3D gamma by local dose method a...

Background: The quality of gynaecological surgical training has faced mounting criticism internationally with multiple countries publishing potential remedies for improvement. Simulation the indisputable ability to mitigate against deficiencies, however, access and simulation varies across regions, never mind nations. Objectives: To assess effect on skills by introduction a structured integrated programme unique aspect being completely free cost provision take-home laparoscopy box trainer...

Numerous studies have demonstrated the clinical benefits of using continuous glucose monitoring (CGM) systems among patients with type 1 diabetes (T1D). Aim study was to assess effectiveness CGM on metabolic control in children T1D and well-controlled disease prior study.This prospective analysis included 99 (46 girls) at median age 11.23 years duration least year (median: 5.16 years), generally well controlled metabolically (median HbA1c: 7.0%), treated subcutaneous insulin infusion (CSII)....

The aim of reporting this case choroid melanoma the left eye is to introduce in-house-designed treatment planning protocol for fractionated radiosurgical ablation an intraocular lesion. This a clinical with emphasis on preparation and delivery using Accuray CyberKnife Robotic Radiosurgery System (Accuray, Sunnyvale, CA, USA) patient immobilized head mask our in-house-made fixation system.

Purpose: The aim of this study was to carry out a dosimetric verification statically planned sliding window IMRT for respiratory‐like moving targets using 2D diode array. Methods: Ten 5‐field plans mobile lung tumors were created. target volumes delineated on the free breathing CT scans. Three tumor motion trajectories have been simulated, with largest movement amplitude in cranio‐caudal direction 4 mm, 6 mm and 8 periods s. simulated kernels derived from literature data. platform (MotionSim...