scholarly journals Medical physics in radiotherapy: The importance of preserving clinical responsibilities and expanding the profession's role in research, education, and quality control

2015 ◽  
Vol 20 (3) ◽  
pp. 161-169 ◽  
Author(s):  
Julian Malicki
Keyword(s):  
Quality Control ◽  
Medical Physics ◽  
Research Education

Guideline for radioimmunotherapy of rituximab relapsed or refractory CD20+ follicular B-cell nonHodgkin´s lymphoma

2004 ◽  
Vol 43 (05) ◽  
pp. 171-176 ◽  
Author(s):  
T. Behr ◽  
F. Grünwald ◽  
W. H. Knapp ◽  
L. Trümper ◽  
C. von Schilling ◽  
...  
Keyword(s):  
Quality Control ◽  
Quality Management ◽  
Medical Physics ◽  
Essential Elements ◽  
Background Information ◽  
After Care ◽  
Complete Treatment ◽  
Close Cooperation ◽  
Work Up

Summary:This guideline is a prerequisite for the quality management in the treatment of non-Hodgkin-lymphomas using radioimmunotherapy. It is based on an interdisciplinary consensus and contains background information and definitions as well as specified indications and detailed contraindications of treatment. Essential topics are the requirements for institutions performing the therapy. For instance, presence of an expert for medical physics, intense cooperation with all colleagues committed to treatment of lymphomas, and a certificate of instruction in radiochemical labelling and quality control are required. Furthermore, it is specified which patient data have to be available prior to performance of therapy and how the treatment has to be carried out technically. Here, quality control and documentation of labelling are of greatest importance. After treatment, clinical quality control is mandatory (work-up of therapy data and follow-up of patients). Essential elements of follow-up are specified in detail. The complete treatment inclusive after-care has to be realised in close cooperation with those colleagues (haematology-oncology) who propose, in general, radioimmunotherapy under consideration of the development of the disease.

Recommended Policies for Uses of Human Tissue in Research, Education, and Quality Control

1999 ◽  
Vol 123 (4) ◽  
pp. 296-300 ◽  
Author(s):  
William Grizzle ◽  
Wayne W. Grody ◽  
Walter W. Noll ◽  
Mark E. Sobel ◽  
Sanford A. Stass ◽  
...  
Keyword(s):  
Quality Control ◽  
Human Tissue ◽  
Medical Knowledge ◽  
Best Interests ◽  
Direct Patient Care ◽  
Research Education ◽  
The Public ◽  
Medical Specialists ◽  
The Individual ◽  
Knowledge Interests

Abstract As recipients of tissue and medical specimens, pathologists and other medical specialists regard themselves as stewards of patient tissues and consider it their duty to protect the best interests of both the individual patient and the public. The stewardship of slides, blocks, and other materials includes providing, under appropriate circumstances, patient materials for research, education, and quality control. The decision to provide human tissue for such purposes should be based on the specific (ie, direct patient care) and general (ie, furthering medical knowledge) interests of the patient and of society. The same standards of responsibility should apply to all medical professionals who receive and use specimens. This document proposes specific recommendations whereby both interests can be fostered safely, ethically, and reasonably.

Guideline for radioimmunotherapy of CD20+ follicular B-cell non-Hodgkin's lymphoma

2009 ◽  
Vol 48 (06) ◽  
pp. 215-220
Author(s):  
F. Grünwald ◽  
W. H. Knapp ◽  
L. Trümper ◽  
C. v. Schilling ◽  
M. Dreyling ◽  
...  
Keyword(s):  
Quality Control ◽  
Medical Physics ◽  
Essential Elements ◽  
Background Information ◽  
After Care ◽  
Complete Treatment ◽  
First Remission ◽  
Close Cooperation ◽  
Work Up

SummaryThis guideline is a prerequisite for the quality management in the treatment of non-Hodgkon-lymphomas in patients with relapsed or refractory follicular lymphoma after rituximab therapy and as consolidation therapy after first remission following CHOP like treatment using radioimmunotherapy. It is based on an interdisciplinary consensus and contains background information and definitions as well as specified indications and detailed contraindications of treatment. Essential topics are the requirements for institutions performing the therapy. For instance, presence of an expert for medical physics, intense cooperation with all colleagues committed to treatment of lymphomas, and a certificate of instruction in radiochemical labelling and quality control are required. Furthermore, it is specified which patient data have to be available prior to performance of therapy and how treatment has to be carried out technically. Here, quality control and documentation of labelling are of great importance. After treatment, clinical quality control is mandatory (work-up of therapy data and followup of patients). Essential elements of follow-up are specified in detail. The complete treatment inclusive after-care has to be realised in close cooperation with those colleagues (hemato-oncologists) who propose, in general, radioimmunotherapy under consideration of the development of the disease.

scholarly journals Medical physics 3.0 versus 1.0: A case study in digital radiography quality control

2018 ◽  
Vol 19 (5) ◽  
pp. 694-707
Author(s):  
Diana E. Carver ◽  
Charles E. Willis ◽  
Paul J. Stauduhar ◽  
Thomas K. Nishino ◽  
Jered R. Wells ◽  
...  
Keyword(s):  
Quality Control ◽  
Digital Radiography ◽  
Medical Physics

scholarly journals Design of Reference Phantom for Quality Control of Conventional X-ray Radiography Units in Port Sudan

2020 ◽  
Vol 7 (1) ◽  
pp. 01-09
Author(s):  
Yousif Mohamed Y. Abdallah ◽  
Wail Zaki ◽  
Babeker Ahmadoun ◽  
Abuobeada Musa
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Medical Physics ◽  
Low Cost ◽  
Management Program ◽  
X Rays ◽  
Resource Limited ◽  
Physics Department ◽  
User Friendly ◽  
Product Output

The Quality Control (QC) system, based on simple, cheap equipment and minimum personnel time, enables a resource-limited facility and staff to control the fundamental components of the imaging process on a low cost basis. Quality Assurance (QA) is a product or service quality management program. Customer reviews, capacity building and quality control can also be included. Quality control requires specific measures for ensuring measurable process-related aspects of product output or for the delivery of services within a given limit. Research was conducted at the Medical Physics Department of Red Sea University. The main objective of this work was to boost quality assurance rays. The imagination is more user-friendly and produces better results than a person or object. Phantoms, including fluoroscopy or x-rays, and certain image quality measurements have been used in x-rays imaging. The manufactured phantom in this study showed high precision in different QC tests.

scholarly journals Quality Control Tests in Some Diagnostic X-Ray Units in Bangladesh

2013 ◽  
Vol 4 (1) ◽  
pp. 59-66
Author(s):  
M Begum ◽  
AS Mollah ◽  
MA Zaman ◽  
AKMM Rahman
Keyword(s):  
Quality Control ◽  
Focal Spot ◽  
Beam Quality ◽  
Medical Physics ◽  
Spot Size ◽  
Measured Parameter ◽  
Focal Spot Size ◽  
X Ray ◽  
Test Tool ◽  
Radiation Fields

Regular implementation of quality control in diagnostic x-ray facilities is essential to provide good quality images which lead to proper diagnoses with minimum hazard and distress. Important performance tests in diagnostic radiology in Bangladesh are carried out according to a quality control protocol and the measured parameter values are compared to the relevant acceptance limits. In this work, beam alignment, field congruence, nominal focal spot, film-screen contact and half value layer for diagnostic x-ray facilities are measured by using beam alignment test tool, RMI/Victoreen collimator test tool, Bar pattern focal spot test tool, film/screen contact test tool (RMI143D), Gammex RMI step wedge and densitometer from forty different diagnostic x-ray facilities in Bangladesh. For congruence between optical and radiation fields, 77.5% are found to be within limit and 60% of facilities are within the beam alignment limit. For most of the installations, 92.5% nominal focal spot size of diagnostic x-ray machines is matched perfectly with the rating of focal spot size. In an effort to improve image quality, this study has checked the film-screen contacts of multiple facilities and found 65% to have the expected uniformity. While investigating half value layers (HVL), a measure of x-ray beam quality, it is found that none of the diagnostic x-ray installations can achieve the recommended levels. DOI: http://dx.doi.org/10.3329/bjmp.v4i1.14688 Bangladesh Journal of Medical Physics Vol.4 No.1 2011 59-66

scholarly journals Detection Efficiency of NaI(Tl) Detector in 511–1332 keV Energy Range

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
I. Akkurt ◽  
K. Gunoglu ◽  
S. S. Arda
Keyword(s):  
Quality Control ◽  
Energy Resolution ◽  
Detection Efficiency ◽  
Medical Physics ◽  
Experimental System ◽  
Absolute Efficiency ◽  
Analytical Result ◽  
Required Quality ◽  
System Gamma ◽  
Peak To Valley Ratio

As it is important to obtain accurate analytical result in an experimental research, this required quality control of the experimental system. Gamma spectrometry system can be used in a variety of different fields such as radiation and medical physics. In this paper the absolute efficiency, peak to valley ratio, and energy resolution of a3′′×3′′NaI(Tl) detector were determined experimentally for 511, 662, 835, 1173, 1275, and 1332 keV photon energies obtained from22Na,54Mn,60Co, and137Cs radioactive sources.

scholarly journals Application of OSL dosimetry and 3D printed phantom for comparison of calculation algorithms for VMAT treatment planning

2019 ◽  
Vol 1 (1) ◽  
pp. 30-39
Author(s):  
Daniel Villani ◽  
Carolina Dos Santos Moreno ◽  
Roberto Kenji Sakuraba ◽  
Letícia Lucente Campos
Keyword(s):  
Quality Control ◽  
Treatment Planning ◽  
Medical Physics ◽  
Dose Calculation ◽  
Treatment Techniques ◽  
Acuros Xb ◽  
Target Volumes ◽  
Calculation Algorithms ◽  
Dose Calculation Algorithms ◽  
3D Printed

The application of new commercial and industrial technologies in the fields of dosimetry and medical physics is of great interest to the scientific community, both to validate existing protocols and to develop new methodologies. The popularization of 3D printing techniques has been analyzed as a great advantage in quality control in complex treatment techniques, such as radiotherapy and the development of patient simulators. Portable dosimetry systems such as Landauer MicroStar OSL system are versatile and their use in quality control is of great importance. The aim of this paper is to compare two of the most used dose calculation algorithms used in Varian Eclipse TPS – AAA and Acuros XB – for treatment planning of multiple brain metastases using a 3D printed anthropomorphic phantom and the OSL InLight system for experimental dosimetry validation. A 3D printed anthropomorphic skull phantom was submitted to a CT scan and planed five target volumes. In order of comparison, two dose calculations were performed in the Varian Eclipse 13.6 TPS with "Alabama technique", using the Varian’s AAA and AXB algorithms, and treatment delivered with 6 MV photon beam of a Varian TrueBeam linear accelerator. Landauer nanoDot dosimeters were positioned inside each of the five target volumes planned and the experimental dosimetric results were compared with the algorithms’ calculated doses. The findings of this work indicate that ACUROS XB calculates more accurate doses compared with AAA, with all the experimental agreements better than 96.0 %, probably because of the heterogeneity corrections. The uncertainty analysis of the InLight system device is enough to sustain the dosimetric uncertainties below 3.0 %, validating the results.  

Quality Control in Radiation Oncology Medical Physics

2007 ◽  
Vol 23 (3-4) ◽  
pp. 133
Author(s):  
Debbie van der Merwe
Keyword(s):  
Quality Control ◽  
Radiation Oncology ◽  
Medical Physics
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