Journal of Applied Clinical Medical Physics
Papers 3,033
1 page of 304 pages (3,033 results)
#1Elahheh Salari (UTMC: University of Toledo Medical Center)
#2E. Ishmael Parsai (UTMC: University of Toledo Medical Center)H-Index: 10
Last. N Sperling (UTMC: University of Toledo Medical Center)H-Index: 2
view all 4 authors...
Purpose null Using intensity-modulated radiosurgery (IMRS) with single isocenter for the treatment of multiple brain lesions has gained acceptance in recent years. One of the challenges of this technique is conducting a patient-specific quality assurance (QA), involving accurate gamma passing rate (GPR) calculations for small and wide spread-out targets. We evaluated effects of parameters such as dose grid and energy on GPR using our clinical IMRS plans. null Methods null Ten patients with total...
#1Elena N. Vasina (UoN: University of Newcastle Australia)
#2Peter B. Greer (UoN: University of Newcastle Australia)H-Index: 36
Last. Joerg Lehmann (UoN: University of Newcastle Australia)H-Index: 19
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The deep inspiration breath-hold (DIBH) technique assists in sparing the heart, lungs, and liver during breast radiotherapy (RT). The quality of DIBH is currently assessed via surrogates which correlate to varying degrees with the patient's internal anatomy. Since modern linacs are equipped with an electronic portal imaging device (EPID), images of the irradiated anatomy streamed from EPIDs and analyzed in real time could significantly improve assessment of the quality of DIBH. A system has been...
#1Jessica R. Miller (UW: University of Wisconsin–Madison)H-Index: 4
#2Lianna D. DiMaso (UW: University of Wisconsin–Madison)H-Index: 1
Last. M Lawless (UW: University of Wisconsin–Madison)H-Index: 3
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PURPOSE The dual-energy CT (DECT) LiverVNC application class in the Siemens Syngo.via software has been used to perform non-iodine material decompositions. However, the LiverVNC application is designed with an optional size-specific calibration based on iodine measurements. This work investigates the effects of this iodine-based size-specific calibration on non-iodine material decomposition and benchmarks alternative methods for size-specific calibrations. METHODS Calcium quantification was perf...
#1Pei-Chieh Yu (CMU: China Medical University)H-Index: 2
#2Ching-Jung Wu (NDMC: National Defense Medical Center)H-Index: 4
Last. Yu-Lun Tsai (NTU: National Taiwan University)H-Index: 3
view all 6 authors...
PURPOSE The purpose of this study is to introduce half-beam volumetric-modulated arc therapy (HVMAT), an innovative treatment planning technique from our work, for reducing dose to the organs at risk (OAR) during adjuvant radiotherapy for gynecological cancers. METHODS AND MATERIALS Seventy-two treatment plans of 36 patients with gynecological cancers receiving adjuvant radiotherapy were assessed. Among them, 36 plans were designed using HVMAT and paired with the other 36 traditional volumetric-...
#1Matthew Webster (UR: University of Rochester)
#2Sean Tanny (UR: University of Rochester)
Last. Inhwan Yeo (UR: University of Rochester)
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Purpose null To propose guidelines for lung stereotactic body radiation therapy (SBRT) when using Acuros XB (AXB) equivalent to the existing ones developed for convolution algorithms such as analytic anisotropic algorithm (AAA), considering the difference between the algorithms. null Methods null A retrospective analysis was performed on 30 lung patients previously treated with SBRT. The original AAA plans, which were developed using dynamic conformal arcs, were recalculated and then renormalize...
#1Pawel Siciarz (University of Manitoba)
#2Boyd McCurdy (University of Manitoba)H-Index: 18
Last. Eric Van UytvenH-Index: 6
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PURPOSE To perform a comprehensive evaluation of eight adaptive radiation therapy strategies in the treatment of prostate cancer patients who underwent hypofractionated volumetric modulated arc therapy (VMAT) treatment. MATERIAL AND METHODS The retrospective study included 20 prostate cancer patients treated with 40 Gy total dose over five fractions (8 Gy/fraction) using VMAT. Daily cone beam computed tomography images were acquired before the delivery of every fraction and then, with the applic...
#1Ashley Cetnar (OSU: The Ohio State University)H-Index: 1
#2D.J. DiCostanzo (OSU: The Ohio State University)H-Index: 6
This study is the first to report the clinical lifetime of Varian Kapton sealed ion chambers as a retrospective review. The data have been analyzed using ion chamber gain values, daily quality assurance results, monthly quality assurance results, and delivered treatment field data were analyzed to comprehensively review trends. The data show the average lifetimes of the ion chambers from our institution, so other physicists can prepare for replacement. Additionally, we share our experience in pe...
#1R. RighettoH-Index: 7
#2F. FellinH-Index: 9
Last. Paolo FaraceH-Index: 21
view all 7 authors...
PURPOSE To assess the dosimetric advantages of apertures in intracranial single fraction proton radiosurgery. MATERIALS AND METHODS Six neuroma and 10 meningioma patients were investigated. For each patient, six plans were computed, with two spot spacing and three aperture settings (no apertures, 5 and 8 mm margin between aperture and clinical target volume [CTV]). All plans were optimized on the CTV with the same beam arrangement and the same single-field robust optimization (2 mm setup errors,...
#1Yang Zhou (CQMU: Chongqing Medical University)
#2Lei Hu (CQMU: Chongqing Medical University)
Last. Zhiwei Zhang (CQMU: Chongqing Medical University)H-Index: 5
view all 7 authors...
Purpose null To investigate the effect of different pitches and corresponding scan fields of view (SFOVs) on the image quality in the ultrafast, high-pitch turbo FLASH mode of the third-generation dual-source CT using an anthropomorphic phantom. null Methods null The phantom was scanned using the ultrafast, high-pitch turbo FLASH protocols of the third-generation dual-source CT with the different pitches and corresponding SFOVs (pitches: 1.55 to 3.2 with increments of 0.1, SFOVs: 50 cm to 35.4 c...
Over the past decade, spectral or dual-energy CT has gained relevancy, especially in oncological radiology. Nonetheless, its use in the radiotherapy (RT) clinic remains limited. This review article aims to give an overview of the current state of spectral CT and to explore opportunities for applications in RT. In this article, three groups of benefits of spectral CT over conventional CT in RT are recognized. Firstly, spectral CT provides more information of physical properties of the body, which...
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