dc.contributor.author |
Abogroun, Tageldin Abdelrahman Salih |
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dc.contributor.author |
Supervisor, -Alsafi Ahmed Abdallah Bala |
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dc.contributor.author |
Co-Supervisor, -Abdelmoneim Adam Mohammed Suleiman |
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dc.date.accessioned |
2017-12-19T13:22:36Z |
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dc.date.available |
2017-12-19T13:22:36Z |
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dc.date.issued |
2017-09-06 |
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dc.identifier.citation |
Abogroun, Tageldin Abdelrahman Salih . Assessmentand Optimizationof Image Qualityin Ultrasound Departmentsin Khartoum State \ TageldinAbdelrahmanSalihAbogroun ; Alsafi Ahmed Abdallah Bala .- Khartoum:Sudan University of Science & Technology,Medical Radiologic Sciences,2017.- 143 p.:ill.;28cm.- PhD |
en_US |
dc.identifier.uri |
http://repository.sustech.edu/handle/123456789/19462 |
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dc.description |
Thesis |
en_US |
dc.description.abstract |
The aim of this study was to assess the factors affecting the ultrasound image quality in the real medical practice. Fifty ultrasound machines along with the associated image criteria were assessed in Khartoum state during the period from October 2013 to October 2016. The assessment was carried out using the international standards and guidelines. Clinical referral issues and causes of image degradations were assessed as initial part of this study.
The result of the study showed that the majority of ultrasound rooms had waiting areas for patients with percentage of 70%. The Wheelchair facility was accessible in 28 ultrasound rooms (56%).Standard ultrasound tables were available in 12 ultrasound rooms (24%). While standard ultrasound operator adjustable chair were available in 18 ultrasound rooms (36%).From the aspect of electrical and mechanical safety and cleanliness, the regular maintenance and checkup for ultrasound machines were done in 11 ultrasound machines (22%).
Image quality was evaluated for 846 patients. Quality control (QC) performance tests on the selected ultrasound scanners were performed over a period of 18 months, in order to assess their value. The testing schedule includes the initial tests that relates to noise and sensitivity following the international recommendations. Regarding the System Sensitivity, the maximum depth can be visualize less Than 3cm to 5.5cm in 5ultrasound machines with percentage of (10%),from 6cm to 9cm in 10ultrasound machines with percentage of (20%), between 9.5cm to 12.5cm in 22ultrasound machines with percentage of (44%), from 13cm to16cm in 13ultrasound machines with percentage of (26%).
Regarding the ultrasound quality controls results, depth measurements accuracy (Electronic Calipers), the actual distance 100mm, the measured distance in group(A) was 100mm with error of 00mm in 12 ultrasound machines with percentage of (24%), the measured distance in group (B) was 88mm with error of 12mm in 23 ultrasound machines with percentage of (46%), the measured distance in group (C) was 67mm with error of 33mm in 10 ultrasound machines with percentage of (20%), the measured distance in group (D) was 45mm with error of 55mm in 3 ultrasound machines with percentage of (6%) and the measured distance in group (E) was 30mm with error of 70mm in 2 ultrasound machines with percentage of (4%).Furthermore, quality assurance program include a mechanism for obtaining outcome data regarding positive sonograms and pathological correlation was included in 14 ultrasound rooms with percentage of (28%).The type of thermal Ultrasound Paper is required by Ultrasound Printers in type of high – end regular paper was used in 6 ultrasound rooms with percentage of (12%), the type of low – end paper was used in 16 ultrasound rooms with percentage of (32%), the type of crap low – end paper was used in 7 ultrasound rooms with percentage of (14%) and was not applicable in 21 ultrasound rooms with percentage of (42%). In accordance to the Image Uniformity, there were 6 ultrasound machines Significant Non-uniformity with percentage of (12%), 5 ultrasound machines were good uniformity with percentage of (10%),18 ultrasound machines were better uniformity with percentage of (36%),13 ultrasound machines were best uniformity with percentage of (26%),and 8 ultrasound machines were Excellent Uniformity with percentage of (16%).
Reviewed results had shown that faults that significantly affect the ultrasound image quality were due to probe faults and noise, inappropriate protocol settings by operators, insufficient clinical guidelines from referring physicians as well as absence of an organized protocol manuals for the various ultrasound procedures and lack of regular QC tests for demonstrating any deterioration in the performance of ultrasound imaging equipment.
In conclusion, applying of planned and inclusive quality control program within these ultrasound departments specifically and within other similar departments with emphasis on developing an ultrasound QA program, does not require test equipment with regular integrity and uniformity assessments of transducers are of an importance as well as establishing an image quality and protocols criteria following the international recommendations is a priority. Finally, the use of the most sophisticated technology in ultrasonography besides the staff training is essential as a basic part of the quality process in ultrasound imaging. |
en_US |
dc.description.sponsorship |
Sudan University of Science and Technology |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Sudan University of Science and Technology |
en_US |
dc.subject |
Medical Radiologic Sciences |
en_US |
dc.subject |
Ultrasonography |
en_US |
dc.subject |
Optimizationof Image Qualityin |
en_US |
dc.title |
Assessmentand Optimizationof Image Qualityin Ultrasound Departmentsin Khartoum State |
en_US |
dc.title.alternative |
تقييم وأمثلة جودة الصورة في أقسام الموجات فوق الصوتية في ولاية الخرطوم |
en_US |
dc.type |
Thesis |
en_US |