Code of Practice for Diagnostic and Interventional Radiology: Draft
... Secondary shielding – 1.5 mm lead equivalence in X-ray rooms where computed tomography equipment is performed, 18 mm gypsum plasterboard equivalence in all X-ray rooms where mammography or dual energy X-ray absorptiometry is performed and 1.0 mm lead equivalence for all other X-ray rooms. Supervised ...
... Secondary shielding – 1.5 mm lead equivalence in X-ray rooms where computed tomography equipment is performed, 18 mm gypsum plasterboard equivalence in all X-ray rooms where mammography or dual energy X-ray absorptiometry is performed and 1.0 mm lead equivalence for all other X-ray rooms. Supervised ...
Full Text - Diagnostic and Interventional Radiology
... ver the past decade there has been an increase in scrutiny pertaining to radiation dose associated with medical procedures from both professional societies and the lay press. In 2006, a total of 4 million interventional procedures performed in the United States accounted for approximately 14% of the ...
... ver the past decade there has been an increase in scrutiny pertaining to radiation dose associated with medical procedures from both professional societies and the lay press. In 2006, a total of 4 million interventional procedures performed in the United States accounted for approximately 14% of the ...
Imaging dose from cone beam computed tomography in radiation
... includes papers in peer-reviewed publications with complete methods and results sections. In addition to the absorbed dose from CBCT, the use of different quality beams other than the therapeutic megavoltage ones raises questions as to the magnitude of effective dose delivered to patient, and the ut ...
... includes papers in peer-reviewed publications with complete methods and results sections. In addition to the absorbed dose from CBCT, the use of different quality beams other than the therapeutic megavoltage ones raises questions as to the magnitude of effective dose delivered to patient, and the ut ...
Three-dimensional Dose Verification Using Normoxic Polymer Gel
... detector array (Xenon filled linear array) to be mounted opposite the source. The primary purpose of this detector is for megavoltage computed tomography (MVCT), delivery verification, and dose reconstruction [1,2]. This on-board linear array of ion chambers also has demonstrated its advantage for q ...
... detector array (Xenon filled linear array) to be mounted opposite the source. The primary purpose of this detector is for megavoltage computed tomography (MVCT), delivery verification, and dose reconstruction [1,2]. This on-board linear array of ion chambers also has demonstrated its advantage for q ...
AIUM Practice Guideline for the Performance of Ultrasound Evaluation of the Prostate
... appropriate health care provider familiar with the patient’s clinical situation and should be consistent with relevant legal and local health care facility requirements. ...
... appropriate health care provider familiar with the patient’s clinical situation and should be consistent with relevant legal and local health care facility requirements. ...
MR guidance in radiotherapy
... Therefore, first robust imaging with high resolution and high contrast between tumour and surrounding normal tissue is required. R350 ...
... Therefore, first robust imaging with high resolution and high contrast between tumour and surrounding normal tissue is required. R350 ...
Low-Grade Glioma: Correlation of Short Echo Time H
... remaining 2 patients continue to be managed expectantly based on clinical and radiologic stability and have not yet had a tissue diagnosis made. Among those with a tissue diagnosis, there were 5 grade 2 oligodendrogliomas, 4 tumors where pathology confirmed grade 2 glioma but could not specify histo ...
... remaining 2 patients continue to be managed expectantly based on clinical and radiologic stability and have not yet had a tissue diagnosis made. Among those with a tissue diagnosis, there were 5 grade 2 oligodendrogliomas, 4 tumors where pathology confirmed grade 2 glioma but could not specify histo ...
Perfusion characteristics of late radiation injury of parotid glands
... group are listed in Table 1. The control group was comprised of 16 men and 3 women (aged 49.4±16.7 years) who had not received radiation therapy, including 7 cases with negative results and 12 cases with fresh head and neck malignancy in areas other than the parotid glands (nasopharyngeal carcinoma ...
... group are listed in Table 1. The control group was comprised of 16 men and 3 women (aged 49.4±16.7 years) who had not received radiation therapy, including 7 cases with negative results and 12 cases with fresh head and neck malignancy in areas other than the parotid glands (nasopharyngeal carcinoma ...
The Modern Technology of Radiation Oncology, Vol. 1
... address the design details of many of the practical tools that are required to prepare patients for treatment or that are used as part of the treatment process. Virtually no textbook addresses the details of acceptance, commissioning, and quality assurance of radiation therapy equipment. The purpose ...
... address the design details of many of the practical tools that are required to prepare patients for treatment or that are used as part of the treatment process. Virtually no textbook addresses the details of acceptance, commissioning, and quality assurance of radiation therapy equipment. The purpose ...
Incorporation of functional imaging data in the evaluation of dose
... critical structure regions with high function (Xing et al 2002, Alber et al 2003). FDG-PET images provide functional data regarding the distribution and proliferative potential of metabolically active tumour clonogens and SPECT perfusion images provide information on blood flow in critical structure ...
... critical structure regions with high function (Xing et al 2002, Alber et al 2003). FDG-PET images provide functional data regarding the distribution and proliferative potential of metabolically active tumour clonogens and SPECT perfusion images provide information on blood flow in critical structure ...
Dose issues on multi-slice CT scanners
... When planning scan lengths to avoid sensitive organs such as eye lenses or gonads, the additional rotations associated with helical scanning should be borne in mind. The additional dose will be particularly significant for short scan lengths and in these situations it may be preferable to perform th ...
... When planning scan lengths to avoid sensitive organs such as eye lenses or gonads, the additional rotations associated with helical scanning should be borne in mind. The additional dose will be particularly significant for short scan lengths and in these situations it may be preferable to perform th ...
Chapter 5 Treatment Machines for External Beam - Phy428-528
... 5.1 INTRODUCTION Specialized machines used for modern radiotherapy: ...
... 5.1 INTRODUCTION Specialized machines used for modern radiotherapy: ...
THE DIAGNOSIS AND TREATMENT OF PERIPHERAL LYMPHEDEMA: 2013 CONSENSUS DOCUMENT OF THE
... solid physiological principles (e.g., avoiding excessive heat on an “at risk” limb or trying to avert infections), others are less supported. It must be noted that most published studies on incidence of secondary lymphedema report less than 50% chance of developing ...
... solid physiological principles (e.g., avoiding excessive heat on an “at risk” limb or trying to avert infections), others are less supported. It must be noted that most published studies on incidence of secondary lymphedema report less than 50% chance of developing ...
The concept and challenges of TomoTherapy accelerators
... varying levels of commercial success. Carol’s system was a success and the first patients were treated in 1994. The company changed its name to Nomos Corporation (Nomos Corporation, Swickley, PA, USA) and started selling the Peacock™ in 1996. The treatment was described as serial tomotherapy, since ...
... varying levels of commercial success. Carol’s system was a success and the first patients were treated in 1994. The company changed its name to Nomos Corporation (Nomos Corporation, Swickley, PA, USA) and started selling the Peacock™ in 1996. The treatment was described as serial tomotherapy, since ...
Imaging clinically localized prostate cancer
... examinations [2]. These findings underscore the importance of the critical evaluation of available data to reduce unnecessary utilization of resources. Long-term cancer-free survival is determined by both the clinical extent of disease at the time of treatment and the type of treatment delivered. Und ...
... examinations [2]. These findings underscore the importance of the critical evaluation of available data to reduce unnecessary utilization of resources. Long-term cancer-free survival is determined by both the clinical extent of disease at the time of treatment and the type of treatment delivered. Und ...
Use of Echocardiography to Evaluate the Cardiac Effects of
... echocardiography laboratory, is when LVEF decreases by $10% to <55% in asymptomatic patients or by $5% to <55% in symptomatic patients (see Figures 1 and 2).27-29 The definition of cardiac dysfunction has been defined by the independent Cardiac Review and Evaluation Committee.28 The following criter ...
... echocardiography laboratory, is when LVEF decreases by $10% to <55% in asymptomatic patients or by $5% to <55% in symptomatic patients (see Figures 1 and 2).27-29 The definition of cardiac dysfunction has been defined by the independent Cardiac Review and Evaluation Committee.28 The following criter ...
CURRICULUMVITAE E. ISHMAEL PARSAI, Ph.D., FACRO, FAAPM
... PROFESSIONAL CONSULTING SERVICES AS EXPERT MEDICAL PHYSICIST: Since January of 2006, I have participated in numerous professional activities as an Expert Medical Physicist (EMP) performing various requested tasks. Those include but not limited to litigation cases, error assessment on ongoing litigat ...
... PROFESSIONAL CONSULTING SERVICES AS EXPERT MEDICAL PHYSICIST: Since January of 2006, I have participated in numerous professional activities as an Expert Medical Physicist (EMP) performing various requested tasks. Those include but not limited to litigation cases, error assessment on ongoing litigat ...
Radiation Protection and Dose Optimisation
... among heavy elements that are of little interest in nuclear medicine. Beta decay can occur in two forms: β- and β+. During β- decay a neutron in the nucleus is converted into a proton and an electron, followed by ejection of the electron together with a neutrino (ν). The electron in this case is ref ...
... among heavy elements that are of little interest in nuclear medicine. Beta decay can occur in two forms: β- and β+. During β- decay a neutron in the nucleus is converted into a proton and an electron, followed by ejection of the electron together with a neutrino (ν). The electron in this case is ref ...
image guided radiation therapy applications for
... argued that adaptive replanning may be more beneficial than patient realignment when intensity modulated radiation therapy techniques are used. Some of the largest dose delivery errors were found in external electron beam treatments for breast cancer patients who underwent breast conserving surgery. ...
... argued that adaptive replanning may be more beneficial than patient realignment when intensity modulated radiation therapy techniques are used. Some of the largest dose delivery errors were found in external electron beam treatments for breast cancer patients who underwent breast conserving surgery. ...
Effective dose range for dental cone beam computed tomography
... extrathoracic airways, calculation of HT was straightforward since these organs are found completely within the head and neck. For bone and skin, the organ fractions reported by Huda et al. [8] were used. For muscle and lymph nodes, it was estimated that 5% of these organs are found within the head ...
... extrathoracic airways, calculation of HT was straightforward since these organs are found completely within the head and neck. For bone and skin, the organ fractions reported by Huda et al. [8] were used. For muscle and lymph nodes, it was estimated that 5% of these organs are found within the head ...
IMRT verification by three-dimensional dose reconstruction
... the effects of MLC leaf position error on dose delivery. Verification of patient positioning. Where high dose gradients are used to spare organs at risk close to a target volume, special attention should be given to ensuring that the patient is correctly positioned. This may include organ motion bot ...
... the effects of MLC leaf position error on dose delivery. Verification of patient positioning. Where high dose gradients are used to spare organs at risk close to a target volume, special attention should be given to ensuring that the patient is correctly positioned. This may include organ motion bot ...
Dynamic contrast-enhanced MRI for prostate cancer localization
... Later studies produced more clinically relevant results by comparing the ability of radiologists to correctly localize tumour to a region of the prostate using DCEMRI and T2W images, and suggesting superiority for DCE-MRI [16, 17] This work describes two approaches to evaluate the ability of DCE-MRI ...
... Later studies produced more clinically relevant results by comparing the ability of radiologists to correctly localize tumour to a region of the prostate using DCEMRI and T2W images, and suggesting superiority for DCE-MRI [16, 17] This work describes two approaches to evaluate the ability of DCE-MRI ...
Understanding Radiation Units
... purposes, but not directly measurable. • Application specific quantities - Measurable in medical imaging. • Diagnostic Refernce Levels ...
... purposes, but not directly measurable. • Application specific quantities - Measurable in medical imaging. • Diagnostic Refernce Levels ...
Frequently Asked Questions About Clinical Dose Optimization
... Commission standards requirements likely do not fall under your current physics contract. Further, this is a relatively new field for medical physicists and most physicists do not have specific training in this area. Landauer Medical Physics has assembled a team of experts with over 5 years of exper ...
... Commission standards requirements likely do not fall under your current physics contract. Further, this is a relatively new field for medical physicists and most physicists do not have specific training in this area. Landauer Medical Physics has assembled a team of experts with over 5 years of exper ...
Positron-Emission Tomography and Assessment of Cancer Therapy
... therapy, no published reports have clearly demonstrated that PET results were used to alter treatment. The absence of such studies may have contributed to the current lack of CMS coverage for this indication in other types of cancer. Therefore, clinical trials are needed to demonstrate the beneficia ...
... therapy, no published reports have clearly demonstrated that PET results were used to alter treatment. The absence of such studies may have contributed to the current lack of CMS coverage for this indication in other types of cancer. Therefore, clinical trials are needed to demonstrate the beneficia ...
Proton therapy
Proton therapy or proton beam therapy is a medical procedure, a type of particle therapy that uses a beam of protons to irradiate diseased tissue, most often in the treatment of cancer. Proton therapy's chief advantage over other types of external beam radiotherapy is that as a charged particle the dose is deposited over a narrow range and there is minimal exit dose.