Comparative analysis for renal stereotactic body radiotherapy using Cyberknife, VMAT and proton therapy based treatment planning.

abstract：:Intraoperative electron radiation therapy (IOERT) cannot usually benefit, as conventional external radiotherapy, from software systems of treatment planning based on computed tomography and from common dose verify procedures. For this reason, in vivo film dosimetry (IVFD) proves to be an effective methodology to evalu...

journal_title：Journal of applied clinical medical physics

authors： Severgnini M,de Denaro M,Bortul M,Vidali C,Beorchia A

更新日期：2014-01-08 00:00:00

abstract：:A new version of progressive resolution optimizer (PRO) with an option of air cavity correction has been implemented for RapidArc volumetric-modulated arc therapy (RA). The purpose of this study was to compare the performance of this new PRO with the use of air cavity correction option (PRO10_air) against the one with...

journal_title：Journal of applied clinical medical physics

authors： Kan MW,Leung LH,Yu PK

更新日期：2013-11-04 00:00:00

abstract：:This study evaluated unexpected dosimetric errors caused by machine control accuracy, patient setup errors, and patient weight changes/internal organ deformations. Trajectory log files for 13 gynecologic plans with seven- or nine-beam dynamic multileaf collimator (MLC) intensity-modulated radiation therapy (IMRT), and...

journal_title：Journal of applied clinical medical physics

authors： Utena Y,Takatsu J,Sugimoto S,Sasai K

更新日期：2021-01-10 00:00:00

abstract：:The objective of this work is the investigation of intense pulsed light (IPL) photoepilation using Monte Carlo simulation to model the effect of the output dosimetry with millisecond exposure used by typical commercial IPL systems. The temporal pulse shape is an important parameter, which may affect the biological tis...

journal_title：Journal of applied clinical medical physics

authors： Ash C,Donne K,Daniel G,Town G,Clement M,Valentine R

更新日期：2012-09-06 00:00:00

abstract：:Performing a procedure on the wrong patient or site is one of the greatest errors that can occur in medicine. The addition of automation has been shown to reduce errors in many processes. In this work we explore the use of an automated patient identification process using optical surface imaging for radiotherapy treat...

journal_title：Journal of applied clinical medical physics

authors： Wiant DB,Verchick Q,Gates P,Vanderstraeten CL,Maurer JM,Hayes TL,Liu H,Sintay BJ

更新日期：2016-03-08 00:00:00

abstract：:The image-guided radiotherapy technique (IGRT) makes use of imaging devices to verify the positions of the target volume and organs at risk during the treatment sessions. In this work we evaluate the image quality provided by an imaging system based on a kilovoltage cone-beam CT, and explore its ability to perform IGR...

journal_title：Journal of applied clinical medical physics

authors： Garayoa J,Castro P

更新日期：2013-01-07 00:00:00

abstract：:The purpose of this study is to evaluate the accuracy of the electron Monte Carlo (eMC) dose calculation algorithm included in a commercial treatment planning system and compare its performance against an electron pencil beam algorithm. Several tests were performed to explore the system's behavior in simple geometries...

journal_title：Journal of applied clinical medical physics

authors： Chamberland E,Beaulieu L,Lachance B

更新日期：2015-05-08 00:00:00

abstract：:The purpose of the present study was to use a kilovoltage imaging device to measure interfractional and intrafractional setup deviations in patients with head-and-neck or brain cancers receiving intensity-modulated radiotherapy (IMRT) treatment. Before and after IMRT treatment, approximately 3 times weekly, 7 patients...

journal_title：Journal of applied clinical medical physics

authors： Mechalakos JG,Hunt MA,Lee NY,Hong LX,Ling CC,Amols HI

更新日期：2007-09-24 00:00:00

abstract：:A wide variety of existing combinations of target and filter materials (target/filter combinations) are used in mammography equipment. The patient dose depends on the X-ray quality that is derived from the target/filter combination, and a calibration of the dosimeter that is used in the measurement that corresponds to...

journal_title：Journal of applied clinical medical physics

authors： Sekimoto M,Katoh Y,Katoh T

更新日期：2015-11-08 00:00:00

abstract：PURPOSE:To quantify the effects of combining layer-based repainting and respiratory gating as a strategy to mitigate the dosimetric degradation caused by the interplay effect between a moving target and dynamic spot-scanning proton delivery. METHODS:An analytic routine modeled three-dimensional dose distributions of p...

journal_title：Journal of applied clinical medical physics

authors： Johnson JE,Herman MG,Kruse JJ

更新日期：2019-09-01 00:00:00

abstract：PURPOSE:Two different respiratory monitoring systems (Varian's Real-Time Position Management (RPM) System and Siemens' ANZAI belt Respiratory Gating System) are compared in the context of respiratory signals and 4D CT images that are accordingly reconstructed. This study aims to evaluate the feasibility of combined use...

journal_title：Journal of applied clinical medical physics

authors： Liu J,Lin T,Fan J,Chen L,Price R,Ma CC

更新日期：2018-09-01 00:00:00

abstract：:Longitudinal partial volume effects (z-axial PVE), which occur when an object partly occupies a slice, degrade image resolution and contrast in computed tomography (CT). Z-axial PVE is unavoidable for subslice objects and reduces their contrast according to their fraction contained within the slice. This effect can be...

journal_title：Journal of applied clinical medical physics

authors： Monnin P,Sfameni N,Gianoli A,Ding S

更新日期：2017-01-01 00:00:00

abstract：PURPOSE:This study evaluates the clinical use of the RUBY modular QA phantom for linac QA to validate the integrity of IGRT workflows including the congruence of machine isocenter, imaging isocenter, and room lasers. The results have been benchmarked against those obtained with widely used systems. Additionally, the RU...

journal_title：Journal of applied clinical medical physics

authors： Poppinga D,Kretschmer J,Brodbek L,Meyners J,Poppe B,Looe HK

更新日期：2020-10-01 00:00:00

abstract：:The purpose of this study was to quantify the intrafraction motion of pediatric patients with brain tumors during radiation therapy and investigate any correlation between motion, use of general anesthesia, and daily treatment duration. 100 pediatric patients with a mean age of 8.5 years (range: 1.0 to 17.8) were incl...

journal_title：Journal of applied clinical medical physics

authors： Beltran C,Merchant TE

更新日期：2011-11-15 00:00:00

abstract：:The purpose of this study was to demonstrate that Monte Carlo treatment planning systems require tissue characterization (density and composition) as a function of CT number. A discrete set of tissue classes with a specific composition is introduced. In the current work we demonstrate that, for megavoltage photon radi...

journal_title：Journal of applied clinical medical physics

authors： Demol B,Viard R,Reynaert N

更新日期：2015-09-08 00:00:00

abstract：:External beam radiation therapy (RT) is often offered to breast cancer patients after surgical mastectomy followed by breast reconstruction with silicone implants. In some cases, the RT is administered while the patient is still implanted with a temporary tissue expander including a high-density metallic port, which i...

journal_title：Journal of applied clinical medical physics

authors： Chatzigiannis C,Lymperopoulou G,Sandilos P,Dardoufas C,Yakoumakis E,Georgiou E,Karaiskos P

更新日期：2011-01-19 00:00:00

abstract：:Chest wall radiation therapy treatment delivery was monitored using a 5 mm thick radiochromic poly(vinyl alcohol) cryogel that also provided buildup material. The cryogels were used to detect positioning errors and measure the impact of shifts for a chest wall treatment that was delivered to a RANDO phantom. The phant...

journal_title：Journal of applied clinical medical physics

authors： Eyadeh MM,Weston MA,Juhasz J,Diamond KR

更新日期：2016-09-08 00:00:00

abstract：:The purpose of this study was to develop and validate cardiac computed tomog-raphy (CT) quantitative analysis software with a patient-specific, 17-segment myocardial model that uses electrocardiogram (ECG)-gated cardiac CT images to differentiate between normal controls and severe aortic stenosis (AS) patients. ECG-ga...

journal_title：Journal of applied clinical medical physics

authors： Jung J,Kim YH,Kim N,Yang DH

更新日期：2016-09-08 00:00:00

abstract：:The goal of the present study was to develop a new dose-volume histogram (DVH)- based homogeneity index for effectively evaluating the dose homogeneity of intensity-modulated radiotherapy plans. The new index, called the sigma-index ("S-index") is defined as the standard deviation of the normalized differential DVH cu...

journal_title：Journal of applied clinical medical physics

authors： Yoon M,Park SY,Shin D,Lee SB,Pyo HR,Kim DY,Cho KH

更新日期：2007-03-20 00:00:00

abstract：:This study aims to evaluate the potential jaw-tracking advantage using control point sequences of volume volumetric modulated arc therapy (VMAT) planning. VMAT plans for patients with prostate and head and neck (H&N) cancers were converted into new static arc (SA) plans. The SA plan consisted of a series of static fie...

journal_title：Journal of applied clinical medical physics

authors： Kim JI,Park JM,Park SY,Choi CH,Wu HG,Ye SJ

更新日期：2014-03-06 00:00:00

abstract：:Flattening filter-free (FFF) beams are becoming the preferred beam type for stereotactic radiosurgery (SRS) and stereotactic ablative radiation therapy (SABR), as they enable an increase in dose rate and a decrease in treatment time. This work assesses the effects of the flattening filter on small field output factors...

journal_title：Journal of applied clinical medical physics

authors： Tyler MK,Liu PZ,Lee C,McKenzie DR,Suchowerska N

更新日期：2016-05-08 00:00:00

abstract：:The primary study objective was to assess radiation doses using a modified form of the Imaging Performance Assessment of Computed Tomography (CT) scanner (ImPACT) patient dosimetry for cardiac applications on an Aquilion ONE ViSION Edition scanner, including the Ca score, target computed tomography angiography (CTA), ...

journal_title：Journal of applied clinical medical physics

authors： Kobayashi M,Asada Y,Matsubara K,Suzuki S,Koshida K,Matsunaga Y,Haba T,Kawaguchi A,Toyama H,Kato R

更新日期：2016-07-08 00:00:00

abstract：:A patient specific quality assurance (QA) should detect errors that originate anywhere in the treatment planning process. However, the increasing complexity of treatment plans has increased the need for improvements in the accuracy of the patient specific pretreatment verification process. This has led to the utilizat...

journal_title：Journal of applied clinical medical physics

authors： Defoor DL,Stathakis S,Roring JE,Kirby NA,Mavroidis P,Obeidat M,Papanikolaou N

更新日期：2017-07-01 00:00:00

abstract：:To monitor delivered dose and trigger plan adaptation when deviation becomes unacceptable, a clinical treatment dose (Tx-Dose) reconstruction system based on three-dimensional (3D)/four-dimensional (4D)-cone beam computed tomograpy (CBCT) images was developed and evaluated on various treatment sites, particularly for ...

journal_title：Journal of applied clinical medical physics

authors： Qin A,Gersten D,Liang J,Liu Q,Grill I,Guerrero T,Stevens C,Yan D

更新日期：2018-11-01 00:00:00

abstract：:Quality control (QC) of CT scanners is important to evaluate image quality and radiation dose. Different QC phantoms for testing image quality parameters on CT are commercially available, and Catphan phantoms are widely used for this purpose. More data from measured image quality parameters on CT are necessary to asse...

journal_title：Journal of applied clinical medical physics

authors： Husby E,Svendsen ED,Andersen HK,Martinsen ACT

更新日期：2017-11-01 00:00:00

abstract：:The QFix EncompassTM stereotactic radiosurgery (SRS) immobilization system consists of a thermoplastic mask that attaches to the couch insert to immobilize patients treated with intracranial SRS. This study evaluates the dosimetric impact and verifies a vendor provided treatment planning system (TPS) model in the Ecli...

journal_title：Journal of applied clinical medical physics

authors： Snyder KC,Xhaferllari I,Huang Y,Siddiqui MS,Chetty IJ,Wen N

更新日期：2018-07-01 00:00:00

abstract：PURPOSE:Segmentation of liver organ and tumors from computed tomography (CT) scans is an important task for hepatic surgical planning. Manual segmentation of liver and tumors is tedious, time-consuming, and biased to the clinician experience. Therefore, automatic segmentation of liver and tumors is highly desirable. It...

journal_title：Journal of applied clinical medical physics

authors： Alirr OI

更新日期：2020-10-01 00:00:00

abstract：:The purpose of this investigation is to measure, characterize and report stray photon leakage and scatter radiation measurements from the Mobetron, an intraoperative electron linear accelerator designed for use in an operating room environment. The study is needed due to recent changes to the shielding design of the M...

journal_title：Journal of applied clinical medical physics

authors： Krechetov AS,Goer D,Dikeman K,Daves JL,Mills MD

更新日期：2010-09-07 00:00:00

abstract：:Monte Carlo simulations are widely used for calculation of the dosimetric parameters of brachytherapy sources. MCNP4C2, MCNP5, MCNPX, EGS4, EGSnrc, PTRAN, and GEANT4 are among the most commonly used codes in this field. Each of these codes utilizes a cross-sectional library for the purpose of simulating different elem...

journal_title：Journal of applied clinical medical physics

authors： Zaker N,Zehtabian M,Sina S,Koontz C,Meigooni AS

更新日期：2016-03-08 00:00:00

abstract：:This work describes the use of 3D printing technology to create individualized boluses for patients treated with electron beam therapy for skin lesions of the eye canthi. It aimed to demonstrate the effectiveness of 3D-printed over manually fabricated paraffin boluses. The study involved 11 patients for whom the const...

journal_title：Journal of applied clinical medical physics

authors： Łukowiak M,Jezierska K,Boehlke M,Więcko M,Łukowiak A,Podraza W,Lewocki M,Masojć B,Falco M

更新日期：2017-01-01 00:00:00