مجال التميز | تميز دراسي وبحثي |
البحوث المنشورة |
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البحث (1): | |
عنوان البحث: |
A Phantom-Based Method to Assess X-Ray Table Mattress Interface Pressures |
رابط إلى البحث: | |
تاريخ النشر: |
03/06/2020 |
موجز عن البحث: |
Background: Pressure redistribution performance of x-ray table mattresses can influence the development of pressure ulcers in at-risk populations. Interface pressure analysis, with human participants, is a common method to assess mattresses. This approach has limitations that relate to the lack of standardisation between and within humans. Aim: This study aimed to develop and validate an anthropomorphic phantom-based method to assess x-ray table mattress interface pressures as an index of mattress performance. Methods: A three dimensional phantom simulating an adult’s head, pelvis, and heels was printed from x-ray computed tomography image data and attached to a metal frame 175 cm in length. Dry sand was added to the phantom head, pelvis, and heels to represent a range of human weights. Pressure distribution was assessed using XSensor. Phantom validation was achieved by comparing phantom mattress interface pressure characteristics, for five human equivalent weights, against 27 sets of human mattress interface pressure data. Results: Using the correlation coefficient R, phantom and human pressure data showed good correlation for the five phantom weights (R values: head = 0.993, pelvis = 0.997, and heels = 0.996). Conclusion: A novel method to test x-ray mattresses for interface pressure was developed and validated. The method could have utility in the testing of x-ray mattresses that are in routine use and for new mattress development. Phantom interface pressure data could be provided by manufacturers to help inform procurement decisions when matching mattress characteristics to medical imaging demands and the underlying patient populations. |
البحث (2): | |
عنوان البحث: |
Pressure distribution analysis of X-Ray table mattresses |
رابط إلى البحث: | |
تاريخ النشر: |
15/12/2020 |
موجز عن البحث: |
Background: There is a risk of developing pressure ulcers from lying on an X-ray table mattress, if the mattress pressure redistribution properties are poor. Aim: To assess the pressure redistribution properties of ‘new’ and ‘in current clinical use’ X-ray table mattresses. Methods and materials: Twenty one X-ray table mattresses, each of 2.5 cm thickness, were evaluated. An anthropomorphic human phantom of adult stature with five different weights (minimum, first quartile, mean, third quartile and maximum) was used to simulate human head, pelvis and heels (pressure ulcer jeopardy areas). Using Xsensor technology, peak pressure was measured and Interface Pressure Ratio was calculated for the three pressure ulcer jeopardy areas ‘with’ and ‘without’ an X-ray table mattress. Results: For all mattresses, statistically significant differences (p < 0.05) were found between the peak pressure values with and without using an X-ray table mattress for the three pressure ulcer jeopardy areas; similarly, for all mattresses, statistically significant differences (p < 0.05) were found between the Interface Pressure Ratio values with and without using x-ray table mattress. The type and age of the mattress was observed to have an impact on peak pressure values and Interface Pressure Ratios, with older mattresses performing worse. Conclusion: Peak pressure values and Interface Pressure Ratios are reduced significantly when using newer X-ray table mattresses. This could be because newer mattresses use more appropriate materials in their construction and/or older mattresses have lost their pressure redistribution properties. Radiology departments should consider assessing mattresses pressure redistribution properties, perhaps on an annual basis. |
البحث (3): | |
عنوان البحث: |
Evaluation of X-ray table mattresses for radiation attenuation and impact on image quality |
رابط إلى البحث: | |
تاريخ النشر: |
09/11/2020 |
موجز عن البحث: |
Introduction: Mattresses in the radiology department tend to be an overlooked aspect of imaging equipment. This paper evaluates the radiation attenuation characteristics of mattresses and the effect they have on image quality. Methods: Thirteen mattresses (from new to 20 years of age) were evaluated. Incident air kerma (IAK) was measured in two conditions, with and without mattress over a range of exposure factors using a digital dosimeter. Image quality was assessed by calculating the inverse image quality factor (IQFinv) using a commercially available phantom (CDRAD) for the same exposure factors. The correlation of age and attenuation and image quality was calculated. Results: Measured IAK and image quality was affected by the addition of a mattress with older mattresses having greater attenuation; there is a moderate/large correlation (0.38–0.51) between age and IAK. IQFinv deteriorated with the addition of a mattress but there was no correlation with age (−0.41 to 0.16). Clinically, there is no impact of any mattress in the study as changes to the exposure factors to account for the attenuation are smaller than the increments in mAs available on X-ray equipment. Conclusion: The results indicate that while the presence of a mattress does impact on transmitted radiation and the quality of the image, the clinical impact is insignificant. Attenuation correlates with age but with no clinical significance. There is no correlation between age and image quality. Implications for practice: Quality control tests for attenuation and impact on image quality are not required in clinical practice. The method could be used by manufacturers to test new materials and mattresses and could provide users with specifications of new products |
المؤتمرات العلمية |
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المؤتمر (1): | |
عنوان المؤتمر: |
European Society of Radiology (ESR) 2020 |
تاريخ الإنعقاد: |
11/03/202011/03/2020- postponed due to COVID-19 to 15-19/07/2020 |
مكان الإنعقاد: |
Vienna, Austria |
طبيعة المشاركة: |
Poster preparation + attendance only |
عنوان المشاركة: |
A novel method to investigate the influence of X-ray table mattresses on pressure ulcer development |
ملخص المشاركة: |
Mattresses can influence the development of pressure ulcers in at risk populations. Previous research identified that X-ray table mattresses can also impact on pressure ulcer development [1]. Pressure distribution analysis, with human participants, is a common method to assess mattresses for their potential to develop ulcers [2]. This approach has limitations – encouraging people to act as volunteers can be problematic due to time constraints and the lack of standardisation between and within humans. This study reports on a method which uses a novel inexpensive anthropomorphic phantom which can be used for assessing pressure distribution properties of X-ray table mattresses. Using the phantom, we outline how the pressure data can be analysed and presented for use in cross sectional comparisons (e.g. prior to purchase) and for assessing mattresses when in routine use. |
الرابط: | |
المؤتمر (2): | |
عنوان المؤتمر: |
European Society of Radiology (ESR) 2020 |
تاريخ الإنعقاد: |
11/03/2020- postponed due to COVID-19 to 15-19/07/2020 |
مكان الإنعقاد: |
Vienna, Austria |
طبيعة المشاركة: |
Poster preparation + attendance only |
عنوان المشاركة: |
Impact of using x-ray table mattress on ulcers development potential problems |
ملخص المشاركة: |
Mattress pressure distribution properties vary, and poor distribution can predispose to skin ulcer formation in at risk populations [1]. Previous research has indicated X-ray table mattresses with poor pressure distribution properties heighten ulceration chances within at-risk populations [2]. This work analyses the pressure distribution properties of seven X-ray mattress within one hospital that are currently used in practice. |
الرابط: | |
المؤتمر (3): |
European Society of Radiology (ESR) 2020 Analysis of seven clinical X-ray table mattress for their impact on image quality and radiation dose Presenter 11/03/2020 |
عنوان المؤتمر: |
European Society of Radiology (ESR) 2020 |
تاريخ الإنعقاد: |
11/03/2020- postponed due to COVID-19 to 15-19/07/2020 |
مكان الإنعقاد: |
Vienna, Austria |
طبيعة المشاركة: |
Poster preparation + attendance only |
عنوان المشاركة: |
Analysis of seven clinical X-ray table mattress for their impact on image quality and radiation dose |
ملخص المشاركة: |
X-ray table mattresses should not reduce image quality (IQ), or misdiagnosis may occur. Equally, X-ray table mattresses should not overly attenuate radiation, or patient dose may have to increase in order to produce an image of suitable quality. A review of the literature indicated no study had investigated the influence of x-ray table mattresses on IQ and radiation dose. This work investigates seven x-ray table mattress, that are used in practice, for their impact on IQ and radiation dose. |
الرابط: |
نادي مليحان طويق الرشيدي
دكتوراه
الطب والخدمات الصحية
University of Salford