Mathematical modeling of the optimum pulse structure for safe and effective photo epilation using broadband pulsed light.

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：INTRODUCTION:This study aimed to investigate the feasibility of generating pseudo dual-energy CT (DECT) from one 120-kVp CT by using convolutional neural network (CNN) to derive additional information for quantitative image analysis through phantom study. METHODS:Dual-energy scans (80/140 kVp) and single-energy scans ...

journal_title：Journal of applied clinical medical physics

authors： Huang WH,Jhan KJ,Yang CC

更新日期：2020-10-14 00:00:00

abstract：:Beam quality correction kQQo (r), which reflects the absorbed energy dependence of the detector, is calculated for solid state detector materials diamond, LiF, Li2B4O7 and Al2O3 for the 137Cs RTR brachytherapy source using the Monte Carlo-based EGSnrc code system. The study also includes calculation of detector-specif...

journal_title：Journal of applied clinical medical physics

authors： Selvam TP,Mishra S,Vishwakarma RS

更新日期：2014-01-06 00:00:00

abstract：:The purpose was to assess the variability in automated translational head/neck setup corrections computed from several different imaging modalities and rigid registration methods using patient anatomy. Shifts were calculated using three commercial and one in-house automated rigid registration methods for nine head/nec...

journal_title：Journal of applied clinical medical physics

authors： Dogan N,Song S,Saleh H,Wu J,Murphy MJ

更新日期：2010-10-13 00:00:00

abstract：:A low-energy (50 kV) X-ray tube used for the stereotactic irradiation of intracranial lesions has been in use since 1999. The unit is calibrated prior to every procedure and during periodic quality assurance (QA) tests. The unit uses an internal and an external scintillation detector to monitor dose as well as a conve...

journal_title：Journal of applied clinical medical physics

authors： Biggs PJ

更新日期：2006-08-24 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：:The purpose of this study was to compare two different styles of prostate IGRT: bony landmark (BL) setup vs. fiducial markers (FM) setup. Twenty-nine prostate patients were treated with daily BL setup and 30 patients with daily FM setup. Delivered dose distribution was reconstructed on cone-beam CT (CBCT) acquired onc...

journal_title：Journal of applied clinical medical physics

authors： Paluska P,Hanus J,Sefrova J,Rouskova L,Grepl J,Jansa J,Kasaova L,Hodek M,Zouhar M,Vosmik M,Petera J

更新日期：2013-05-06 00:00:00

abstract：PURPOSE:Elekta XVI 5.0 allows for four-dimensional cone beam computed tomography (4D CBCT) image acquisition during treatment delivery to monitor intrafraction motion. These images can have poorer image quality due to undersampling of kV projections and treatment beam MV scatter effects. We determine if a universal int...

journal_title：Journal of applied clinical medical physics

authors： Liang J,Lack D,Zhou J,Liu Q,Grills I,Yan D

更新日期：2019-12-01 00:00:00

abstract：:Treatment planning for breast cancer has been traditionally based on clinical landmarks. The Radiation Therapy Oncology Group (RTOG) published consensus guidelines on contouring target volumes (TV) for the breast/chest wall and draining lymphatics. The effect of these guidelines on dosimetric parameters in surrounding...

journal_title：Journal of applied clinical medical physics

authors： Rudra S,Al-Hallaq HA,Feng C,Chmura SJ,Hasan Y

更新日期：2014-03-06 00:00:00

abstract：PURPOSE:The GammaPod is a dedicated prone breast stereotactic radiosurgery (SRS) machine composed of 25 cobalt-60 sources which rotate around the breast to create highly conformal dose distributions for boosts, partial-breast irradiation, or neo-adjuvant SRS. We describe the development and validation of a patient-spec...

journal_title：Journal of applied clinical medical physics

authors： Becker SJ,Niu Y,Mutaf Y,Chen S,Poirier Y,Nichols EM,Yi B

更新日期：2019-12-01 00:00:00

abstract：:The goal of this study was to investigate small field output factors (OFs) for flat-tening filter-free (FFF) beams on a dedicated stereotactic linear accelerator-based system. From this data, the collimator exchange effect was quantified, and detector-specific correction factors were generated. Output factors for 16 j...

journal_title：Journal of applied clinical medical physics

authors： Qin Y,Zhong H,Wen N,Snyder K,Huang Y,Chetty IJ

更新日期：2016-11-08 00:00:00

abstract：PURPOSE:This study evaluates the feasibility of lung dose prediction based on target contour and patient anatomy for breast patients treated with proton therapy. METHODS:Fifty-two randomly selected patients were included in the cohort, who were treated to 50.4-66.4 Gy(RBE) to the left (36), right (15), or bilateral (1...

journal_title：Journal of applied clinical medical physics

authors： Zeng C,Sine K,Mah D

更新日期：2018-11-01 00:00:00

abstract：:To estimate the lung tumor position from multiple anatomical features on four-dimensional computed tomography (4D-CT) data sets using single regression analysis (SRA) and multiple regression analysis (MRA) approach and evaluate an impact of the approach on internal target volume (ITV) for stereotactic body radiotherap...

journal_title：Journal of applied clinical medical physics

authors： Ono T,Nakamura M,Hirose Y,Kitsuda K,Ono Y,Ishigaki T,Hiraoka M

更新日期：2017-09-01 00:00:00

abstract：:In this work, the feasibility of using flattening filter free (FFF) beams in volumetric modulated arc therapy (VMAT) total body irradiation (TBI) treatment planning to decrease protracted beam-on times for these treatments was investigated. In addition, a methodology was developed to generate standardized VMAT TBI tre...

journal_title：Journal of applied clinical medical physics

authors： Frederick R,Hudson A,Balogh A,Cao JQ,Pierce G

更新日期：2020-03-01 00:00:00

abstract：:TomoEDGE is an advanced delivery form of tomotherapy which uses a dynamic secondary collimator. This plan comparison study describes the new features, their clinical applicability, and their effect on plan quality and treatment speed. For the first 45 patients worldwide that were scheduled for a treatment with TomoEdg...

journal_title：Journal of applied clinical medical physics

authors： Katayama S,Haefner MF,Mohr A,Schubert K,Oetzel D,Debus J,Sterzing F

更新日期：2015-03-08 00:00:00

abstract：PURPOSE:Adaptive radiotherapy (ART) has potential to reduce toxicity and facilitate safe dose escalation. Dose calculations with the planning CT deformed to cone beam CT (CBCT) have shown promise for estimating the "dose of the day". The purpose of this study is to investigate the "dose of the day" calculation accuracy...

journal_title：Journal of applied clinical medical physics

authors： Yuan Z,Rong Y,Benedict SH,Daly ME,Qiu J,Yamamoto T

更新日期：2020-01-01 00:00:00

abstract：:Modern three-dimensional image-guided intracavitary high dose rate (HDR) brachytherapy is often used in combination with external beam radiotherapy (EBRT) to manage cervical cancer. Intrafraction motion of critical organs relative to the HDR applicator in the time between the planning CT and treatment delivery can cau...

journal_title：Journal of applied clinical medical physics

authors： Liu H,Kinard J,Maurer J,Shang Q,Vanderstraeten C,Hayes L,Sintay B,Wiant D

更新日期：2018-11-01 00:00:00

abstract：:The purpose of this study is to describe the comprehensive commissioning process and initial clinical experience of the Mevion S250 proton therapy system, a gantry-mounted, single-room proton therapy platform clinically implemented in the S. Lee Kling Proton Therapy Center at Barnes-Jewish Hospital in St. Louis, MO, U...

journal_title：Journal of applied clinical medical physics

authors： Zhao T,Sun B,Grantham K,Rankine L,Cai B,Goddu SM,Santanam L,Knutson N,Zhang T,Reilly M,Bottani B,Bradley J,Mutic S,Klein EE

更新日期：2016-03-08 00:00:00

abstract：:The GafChromic XR Type R film is a relatively new product for recording high radiation dose in interventional radiological procedures. Means of measuring the film response were studied in this investigation. Two handheld reflective-type densitometers of different models were compared in the range of 0-8 Gy. They were ...

journal_title：Journal of applied clinical medical physics

authors： Thomas G,Chu RY,Rabe F

更新日期：2003-10-01 00:00:00

abstract：:The purpose of this study was to investigate amplitude gating combined with a coached breathing strategy for 10 MV flattening filter-free (FFF) volumetric-modulated arc therapy (VMAT) on the Varian TrueBeam linac. Ten patient plans for VMAT SABR liver were created using the Eclipse treatment planning system (TPS). The...

journal_title：Journal of applied clinical medical physics

authors： Viel F,Lee R,Gete E,Duzenli C

更新日期：2015-07-08 00:00:00

abstract：:A method to evaluate the electron beam energy constancy by employing the computed radiography (CR) system has been developed. In this method, a right triangular plastic wedge is used to produce a curve of the CR storage phosphor plate signal versus the wedge thickness. The curve, which resembles the percentage depth i...

journal_title：Journal of applied clinical medical physics

authors： Cai YC,Ge Y,Bernard D,Turian J,Chu JCH

更新日期：2009-10-15 00:00:00

abstract：:This study aimed to verify the accuracy of half-value layer (HVL) measured using the new copper pipe method with the CT ionization chamber while the X-ray tube is rotating and to compare it with the conventional nonrotating method and Monte Carlo simulation method based on the actual measurement and geometry of the ne...

journal_title：Journal of applied clinical medical physics

authors： Okubo R,Matsubara K,Chusin T,Hibino T,Ito Y

更新日期：2019-12-01 00:00:00

abstract：:The purpose of this study was to determine the reproducibility of patient-specific, intensity-modulated radiation therapy (IMRT) quality assurance (QA) results in a clinical setting. Six clinical patient plans were delivered to a variety of devices and analyses, including 1) radiographic film; 2) ion chamber; 3) 2D di...

journal_title：Journal of applied clinical medical physics

authors： McKenzie EM,Balter PA,Stingo FC,Jones J,Followill DS,Kry SF

更新日期：2014-05-08 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：: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：:In this study, we compared the amount of lung tissue irradiated when respiratory gating was imposed during expiration with the amount of lung tissue irradiated when gating was imposed during inspiration. Our hypothesis was that the amount of lung tissue spared increased as inspiration increased. Computed tomography (C...

journal_title：Journal of applied clinical medical physics

authors： Butler LE,Forster KM,Stevens CW,Bloch C,Liu HH,Tucker SL,Komaki R,Liao Z,Starkschall G

更新日期：2004-01-01 00:00:00

abstract：PURPOSE:Prescription practice in SRS plans for brain tumors differs significantly for different modalities. In this retrospective study, the strategies to optimize SRS plans for brain tumors with volumetric arc therapy (VMAT) were presented. METHODS:Fifty clinically treated cases were stratified by the maximum target ...

journal_title：Journal of applied clinical medical physics

authors： Wang D,DeNittis A,Hu Y

更新日期：2020-03-01 00:00:00

abstract：PURPOSE:The aim of this study was to develop and assess the performance of supervised machine learning technique to classify magnetic resonance imaging (MRI) voxels as cancerous or noncancerous using noncontrast multiparametric MRI (mp-MRI), comprised of T2-weighted imaging (T2WI), diffusion-weighted imaging (DWI), and...

journal_title：Journal of applied clinical medical physics

authors： Gholizadeh N,Simpson J,Ramadan S,Denham J,Lau P,Siddique S,Dowling J,Welsh J,Chalup S,Greer PB

更新日期：2020-10-01 00:00:00

abstract：PURPOSE/OBJECTIVES:To present our linac-based SRS procedural technique for medically and/or surgically refractory trigeminal neuralgia (TN) treatment and simultaneously report our clinical outcomes. MATERIALS AND METHODS:Twenty-seven refractory TN patients who were treated with a single fraction of 80 Gy to TN. Treatm...

journal_title：Journal of applied clinical medical physics

authors： Pokhrel D,Sood S,McClinton C,Saleh H,Badkul R,Jiang H,Stepp T,Camarata P,Wang F

更新日期：2017-03-01 00:00:00

abstract：:Substantial disagreement exists over appropriate PET segmentation techniques for non-small cell lung cancer. Currently, no segmentation algorithm explicitly considers tumor motion in determining tumor borders. We developed an automatic PET segmentation model as a function of target volume, motion extent, and source-to...

journal_title：Journal of applied clinical medical physics

authors： Riegel AC,Bucci MK,Mawlawi OR,Ahmad M,Luo D,Chandler A,Pan T

更新日期：2014-01-06 00:00:00