MRI quality control: six imagers studied using eleven unified image quality parameters

This paper describes an automatic system for analyzing phantom images from two types of PET/CT scanners. The system was developed for the purpose of obtaining tomographic image quality parameters, which determine a number of different performance parameters, primarily scanner sensitivity, tomographic uniformity, contrast and spatial resolution. The system provides a method for generating and altering image masks used for the analysis of PET images, which are then automatically aligned with the PET data. The system automatically generates Quality Control (QC) reports and is currently being used at clinical PET/CT center.

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EP-2088: Quantification of image quality parameters of dual energy CT using software for quality control

Radiotherapy and Oncology ◽

10.1016/s0167-8140(18)32397-1 ◽

2018 ◽

Vol 127 ◽

pp. S1146-S1147

Author(s):

B. Pawalowski ◽

H. Szweda ◽

D. Radomiak ◽

K. Matuszewski ◽

U. Sobocka-Kurdyk ◽

...

Keyword(s):

Quality Control ◽

Image Quality ◽

Quality Parameters ◽

Dual Energy ◽

Dual Energy Ct

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Ultrasound Practice Redesign to Improve Image Quality: Implementation of a Quality Control Sonographer

Journal of the American College of Radiology ◽

10.1016/j.jacr.2020.07.015 ◽

2020 ◽

Vol 17 (12) ◽

pp. 1644-1652

Author(s):

Melanie P. Caserta ◽

Stephanie L. Bonnett ◽

Melody C. La Valley ◽

Salvatore De Meo ◽

Andrew W. Bowman

Keyword(s):

Quality Control ◽

Image Quality ◽

Improve Image Quality ◽

Practice Redesign

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2. Present Approaches to Measuring Image Quality Parameters

Journal of the International Commission on Radiation Units and Measurements ◽

10.1093/jicru/os28.1.6 ◽

1996 ◽

Vol os28 (1) ◽

pp. 6-10

Author(s):

P. Sharp ◽

D. C. Barber ◽

D. G. Brown ◽

A. E. Burgess ◽

C. E. Metz ◽

...

Keyword(s):

Image Quality ◽

Quality Parameters

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High precision calculation of SAR image quality parameters

2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) ◽

10.1109/apsar.2015.7306226 ◽

2015 ◽

Author(s):

Jiajia Guo ◽

Kaizhi Wang ◽

Yiran Jin ◽

Xin Lin ◽

Yesheng Gao ◽

...

Keyword(s):

Image Quality ◽

High Precision ◽

Quality Parameters ◽

Sar Image

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Establishing a quality assurance baseline for radiological protection of patients undergoing diagnostic radiology

South African Journal of Radiology ◽

10.4102/sajr.v15i3.370 ◽

2011 ◽

Vol 15 (3) ◽

pp. 70 ◽

Cited By ~ 1

Author(s):

Geoffrey K Korir ◽

Jeska Sidika Wambani ◽

Ian K Korir

Keyword(s):

Quality Control ◽

Quality Assurance ◽

Image Quality ◽

Radiation Exposure ◽

High Speed ◽

Quality Criteria ◽

Patient Dose ◽

Radiological Protection ◽

X Ray ◽

High Speed Film

Background. The wide use of ionising radiation in medical care has resulted in the largest man-made cause of radiation exposure. In recent years, diagnostic departments in Kenya have adapted the high-speed film/screen combination without well-established quality control, objective image quality criteria, and assessment of patient dose. The safety of patients in terms of justification and the as-low-as-reasonably-achievable (ALARA) principle is inadequate without quality assurance measures. Aim. This study assessed the level of film rejects, device performance, image quality and patient dose in 4 representative hospitals using high-speed film/screen combination. Results. The X-ray equipment quality control tests performance range was 67% to 90%, and 63% of the radiographs were of good diagnostic value. The measured prevalent chest examination entrance surface dose (ESD) showed levels above the international diagnostic reference levels (DRLs), while lumbar spine and pelvis examination was the largest source of radiation exposure to patients. Conclusion. The optimisation of patient protection can be achieved with optimally performing X-ray equipment, the application of good radiographic technique, and continuous assessment of radiographic image quality.

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Improving effectiveness of mitigation measures in EIA follow-up

Management of Environmental Quality An International Journal ◽

10.1108/meq-04-2014-0052 ◽

2015 ◽

Vol 26 (4) ◽

pp. 518-537 ◽

Cited By ~ 5

Author(s):

Amarilis Lucia Casteli Figueiredo Gallardo ◽

Caio Pompeu Cavalhieri ◽

Sofia Julia Alves Macedo Campos ◽

Omar Yazbek Bitar

Keyword(s):

Water Quality ◽

Quality Control ◽

Quality Parameters ◽

Mitigation Measures ◽

Water Quality Control ◽

Content Type ◽

Study Approach ◽

Phase Water

Purpose – The purpose of this paper is to investigate the effectiveness of mitigation measures adopted in a scheme of EIA follow-up by examining their performance in reducing geo-environmental impacts in earthwork activities during the Rodoanel southern section construction in São Paulo, Brazil. This environment is fragile in terms of affected watersheds because the highway crosses two important reservoirs that supply most of the metropolitan water demand. Therefore, this research also aims at promoting water quality control. Design/methodology/approach – This study combines complementary sources as evidences in the literature and field checks, tests and monitoring. The methodology was supported by criteria for evaluating the effectiveness of mitigation measures in the case study approach. Findings – The EIA follow-up activities contributed to the maintenance of environmental conditions in the majority of the control points at the end of the construction phase. Water quality parameters were not statistically different before and during the construction of the highway. The choice and arrangement of mitigation measures were successful in ensuring water quality control by avoiding siltation. Practical implications – A robust scheme for designing and evaluating mitigation measures contributes to the improvement of their effectiveness and is pivotal to the success of the EIA follow-up. Originality/value – This case study serves as an example for extending EIA follow-up practice in special to the improvement of the design and evaluation of mitigation measures in similar contexts.

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ANALYZING THE EFFECT OF DENSITY VALUE DEVIATION ON PRINT QUALITY

KREATOR ◽

10.46961/kreator.v3i2.298 ◽

2021 ◽

Vol 2 (1) ◽

Author(s):

Soebardianto . ◽

Septia Ardiani ◽

Romi Setiawan

Keyword(s):

Quality Control ◽

Quality Parameters ◽

Quality Level ◽

Print Quality ◽

Machine Material ◽

Digital World ◽

Quality Control Parameters ◽

Density Values ◽

Standard Density

The quality control activities, in particular the measurement of density values, are part of the quality control parameters carried out by each company. Companies sometimes forget about the quality parameters of the name, even though the quality can give the printed products a good guarantee in the eyes of consumers. To achieve the quality level, of course, the business does not stand idle, there are several things that need to be done or provided by the business to support the quality, namely man (human), machine (machine), material (material), and method (method). In the development of technology in an increasingly advanced digital world, companies want to continue to compete with a digital world by making inroads, this of course gives the products produced by the company a good or a good level of quality. In this discussion, there is an identification of problematic aspects arising from the deviation of density values as well as ways to obtain standard density values and factors that affect the quality of prints on book cover prints using a Heidelberg machine.Keywords—Quality Control, Density, Standart, Product, Deviation

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