List of Titles

Shape-shifting thermal coagulation zone during saline-infused radiofrequency ablation: A computational study on the effects of different infusion location

- Kho, Antony, Foo, Ji, Ooi, Ean Tat, Ooi, Ean Hin

Authors: Kho, Antony , Foo, Ji , Ooi, Ean Tat , Ooi, Ean Hin
Date: 2020
Type: Text , Journal article
Relation: Computer Methods and Programs in Biomedicine Vol. 184, no. (2020), p.
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Reviewed:
Description: Background and objective: The majority of the studies on radiofrequency ablation (RFA) have focused on enlarging the size of the coagulation zone. An aspect that is crucial but often overlooked is the shape of the coagulation zone. The shape is crucial because the majority of tumours are irregularly-shaped. In this paper, the ability to manipulate the shape of the coagulation zone following saline-infused RFA by altering the location of saline infusion is explored. Methods: A 3D model of the liver tissue was developed. Saline infusion was described using the dual porosity model, while RFA was described using the electrostatic and bioheat transfer equations. Three infusion locations were investigated, namely at the proximal end, the middle and the distal end of the electrode. Investigations were carried out numerically using the finite element method. Results: Results indicated that greater thermal coagulation was found in the region of tissue occupied by the saline bolus. Infusion at the middle of the electrode led to the largest coagulation volume followed by infusion at the proximal and distal ends. It was also found that the ability to delay roll-off, as commonly associated with saline-infused RFA, was true only for the case when infusion is carried out at the middle. When infused at the proximal and distal ends, the occurrence of roll-off was advanced. This may be due to the rapid and more intense heating experienced by the tissue when infusion is carried out at the electrode ends where Joule heating is dominant. Conclusion: Altering the location of saline infusion can influence the shape of the coagulation zone following saline-infused RFA. The ability to ‘shift’ the coagulation zone to a desired location opens up great opportunities for the development of more precise saline-infused RFA treatment that targets specific regions within the tissue. © 2019 Elsevier B.V.

Critical measurement issues in the assessment of social media influence on body image

- Jarman, Hannah, McLean, Sian, Griffiths, Scott, Teague, Samantha, Rodgers, Rachel, Paxton, Susan, Austen, Emma, Harris, Emily, Steward, Trevor, Shatte, Adrian, Khanh-Dao Le, Long, Anwar, Tarique, Mihalopoulos, Cathrine, Parker, Alexandra, Yager, Zali, Fuller-Tyszkiewicz, Matthew

Authors: Jarman, Hannah , McLean, Sian , Griffiths, Scott , Teague, Samantha , Rodgers, Rachel , Paxton, Susan , Austen, Emma , Harris, Emily , Steward, Trevor , Shatte, Adrian , Khanh-Dao Le, Long , Anwar, Tarique , Mihalopoulos, Cathrine , Parker, Alexandra , Yager, Zali , Fuller-Tyszkiewicz, Matthew
Date: 2022
Type: Text , Journal article , Review
Relation: Body Image Vol. 40, no. (2022), p. 225-236
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Reviewed:
Description: Progress towards understanding how social media impacts body image hinges on the use of appropriate measurement tools and methodologies. This review provides an overview of common (qualitative, self-report survey, lab-based experiments) and emerging (momentary assessment, computational) methodological approaches to the exploration of the impact of social media on body image. The potential of these methodologies is detailed, with examples illustrating current use as well as opportunities for expansion. A key theme from our review is that each methodology has provided insights for the body image research field, yet is insufficient in isolation to fully capture the nuance and complexity of social media experiences. Thus, in consideration of gaps in methodology, we emphasise the need for big picture thinking that leverages and combines the strengths of each of these methodologies to yield a more comprehensive, nuanced, and robust picture of the positive and negative impacts of social media. © 2022 Elsevier Ltd

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