Journal of Applied Clinical Medical Physics
IF
1.68
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2544
Papers 2960
1 page of 296 pages (2,960 results)
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#1Bin Zhang (UPSI: Sultan Idris University of Education)H-Index: 1
#2Bahbibi Rahmatullah (UPSI: Sultan Idris University of Education)H-Index: 9
Last. Nader Ale Ebrahim (Alzahra University)
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PURPOSE Medical images are important in diagnosing disease and treatment planning. Computer algorithms that describe anatomical structures that highlight regions of interest and remove unnecessary information are collectively known as medical image segmentation algorithms. The quality of these algorithms will directly affect the performance of the following processing steps. There are many studies about the algorithms of medical image segmentation and their applications, but none involved a bibl...
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PURPOSE The aim of this paper is to describe the tests carried out on a SRSMapCheck array, to verify its reliability and sensitivity for quality assurance (QA) of high gradient treatments as an alternative system to the use of high spatial resolution detectors, such as gafchromic film, whose processing requires meticulous and time-consuming procedures. METHODS In an initial step, general functionality tests were carried out to verify that the equipment meets the manufacturer's specifications. A ...
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#1Diana M. C. Rojas (USP: University of São Paulo)
#2Juliana Fernandes Pavoni (USP: University of São Paulo)H-Index: 6
Last. Oswaldo Baffa (USP: University of São Paulo)H-Index: 29
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This study aims to verify the dose delivery of prostate radiotherapy treatments in an adult pelvic phantom with two metallic hip and femur prosthesis using a four-field box technique. The prostate planned target volume (PTV) tridimensional (3D) dose distribution was evaluated using gel dosimetry, and thermoluminescent dosimeters (TLD) were used for point-dose measurements outside it. Both results were compared to the treatment planning system (TPS) dose calculation without using heterogeneity co...
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#1Madison Naessig (University of Texas Health Science Center at San Antonio)
#2Soleil Hernandez (A&M: Texas A&M University)H-Index: 1
Last. Niko Papanikolaou (University of Texas Health Science Center at San Antonio)H-Index: 12
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Purpose null To develop a simplified aluminum compensator system for total body irradiation (TBI) that is easy to assemble and modify in a short period of time for customized patient treatments. null Methods null The compensator is composed of a combination of 0.3 cm thick aluminum bars, two aluminum T-tracks, spacers, and metal bolts. The system is mounted onto a plexiglass block tray. The design consists of 11 fixed sectors spanning from the patient's head to feet. The outermost sectors utiliz...
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#1Huaizhi Geng (UPenn: University of Pennsylvania)H-Index: 4
#2Tawfik Giaddui PhD (UPenn: University of Pennsylvania)
Last. Ying Xiao (UPenn: University of Pennsylvania)H-Index: 29
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BACKGROUND AND PURPOSE The efficacy of clinical trials and the outcome of patient treatment are dependent on the quality assurance (QA) of radiation therapy (RT) plans. There are two widely utilized approaches that include plan optimization guidance created based on patient-specific anatomy. This study examined these two techniques for dose-volume histogram predictions, RT plan optimizations, and prospective QA processes, namely the knowledge-based planning (KBP) technique and another first prin...
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#1Mojtaba Moazzezi (UCSD: University of California, San Diego)
#2Brent S. Rose (UCSD: University of California, San Diego)H-Index: 19
Last. Xenia Ray (UCSD: University of California, San Diego)H-Index: 1
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PURPOSE Implementing new online adaptive radiation therapy technologies is challenging because extra clinical resources are required particularly expert contour review. Here, we provide the first assessment of Varian's Ethos™ adaptive platform for prostate cancer using no manual edits after auto-segmentation to minimize this impact on clinical efficiency. METHODS Twenty-five prostate patients previously treated at our clinic were re-planned using an Ethos™ emulator. Clinical target volumes (CTV)...
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#1Sandy MohamedH-Index: 9
#2Lars FokdalH-Index: 23
Last. Kari Tanderup (AU: Aarhus University)H-Index: 49
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We aimed to evaluate the extent of groin edema and its dosimetric effect in boosted inguinal lymph nodes (LN) for vulvar cancer patients. The level of edema was determined in 10 patients treated with radical radiotherapy. A dosimetric evaluation of six LNs in the patient with the maximum level of edema was performed. The accumulated dose across CBCT fractions was acceptable for all six LNs (>94% of prescribed dose) even with the development of up to 13 mm of edema. The major contributor to fract...
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#1Yoshihiko Manabe (Nagoya City University)H-Index: 9
Last. Yuta Shibamoto (Nagoya City University)H-Index: 44
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PURPOSE With a new tumor-tracking system (Synchrony®) for tomotherapy (Radixact®), the internal and set-up margins can be tightened, like cyberknife (CyberKnife®), in the planning of stereotactic body radiotherapy (SBRT) for prostate cancer. Recently, the usefulness of placing a hydrogel spacer between the prostate and rectum has been established in prostate radiotherapy. We evaluated the characteristics of tomotherapy plans with the tumor-tracking system and compared them with cyberknife SBRT p...
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#1Jacqueline M. Andreozzi (Dartmouth College)H-Index: 10
#2Petr Brůža (Dartmouth College)H-Index: 9
Last. David J. Gladstone (Dartmouth College)H-Index: 32
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PURPOSE Demonstrate a novel phantom design using a remote camera imaging method capable of concurrently measuring the position of the x-ray isocenter and the magnetic resonance imaging (MRI) isocenter on an MR-linac. METHODS A conical frustum with distinct geometric features was machined out of plastic. The phantom was submerged in a small water tank, and aligned using room lasers on a MRIdian MR-linac (ViewRay Inc., Cleveland, OH). The phantom physical isocenter was visualized in the MR images ...
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#1Sebastian SarudisH-Index: 3
#2Anna Karlsson (Sahlgrenska University Hospital)
Last. A. Bäck (Sahlgrenska University Hospital)H-Index: 3
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BACKGROUND AND PURPOSE When treating lung tumors with stereotactic body radiation therapy (SBRT), patient immobilization is of outmost importance. In this study, the intra-fractional shifts of the patient (based on bony anatomy) and the tumor (based on the visible target volume) are quantified, and the associated impact on the delivered dose is estimated for a frameless immobilization approach in combination with surface guided radiation therapy (SGRT) monitoring. METHODS Cone beam computed tomo...
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Top fields of study
Imaging phantom
Medical physics
Radiation treatment planning
Nuclear medicine
Medicine
Dosimetry