Clinically Applicable Segmentation of Head and Neck Anatomy for Radiotherapy: Deep Learning Algorithm Development and Validation Study.

BACKGROUND: Over half a million individuals are diagnosed with head and neck cancer each year globally. Radiotherapy is an important curative treatment for this disease, but it requires manual time to delineate radiosensitive organs at risk. This planning process can delay treatment while also introducing interoperator variability, resulting in downstream radiation dose differences. Although auto-segmentation algorithms offer a potentially time-saving solution, the challenges in defining, quantifying, and achieving expert performance remain. OBJECTIVE: Adopting a deep learning approach, we aim to demonstrate a 3D U-Net architecture that achieves expert-level performance in delineating 21 distinct head and neck organs at risk commonly segmented in clinical practice. METHODS: The model was trained on a data set of 663 deidentified computed tomography scans acquired in routine clinical practice and with both segmentations taken from clinical practice and segmentations created by experienced radiographers as part of this research, all in accordance with consensus organ at risk definitions. RESULTS: We demonstrated the model's clinical applicability by assessing its performance on a test set of 21 computed tomography scans from clinical practice, each with 21 organs at risk segmented by 2 independent experts. We also introduced surface Dice similarity coefficient, a new metric for the comparison of organ delineation, to quantify the deviation between organ at risk surface contours rather than volumes, better reflecting the clinical task of correcting errors in automated organ segmentations. The model's generalizability was then demonstrated on 2 distinct open-source data sets, reflecting different centers and countries to model training. CONCLUSIONS: Deep learning is an effective and clinically applicable technique for the segmentation of the head and neck anatomy for radiotherapy. With appropriate validation studies and regulatory approvals, this system could improve the efficiency, consistency, and safety of radiotherapy pathways.

"We are sacred": An intercultural and multilingual approach to understanding reproductive health literacy for Yolŋu girls and women in remote Northern Australia.

ISSUE ADDRESSED: Indigenous women continue to experience reproductive health inequities. While enhancing health literacy is suggested as an approach for reducing disparities and increasing equity, there is a paucity of literature exploring Indigenous women's conceptualisation of reproductive health literacy. This paper demonstrates one approach to developing a reproductive health literacy framework for Yolŋu (Indigenous) women in a remote Northern Australian setting. METHODS: Using a decolonising participatory action research approach, a senior Yolŋu researcher led interviews, group story sharing sessions, historic site visits and on-country cultural demonstration sessions with participants on reproductive health topics. Data were collected in the participants' first language(s) and occasionally in English. Data were digitally recorded on camera, Dictaphone, video and in handwritten notes. The senior Yolŋu researcher worked with a Yolŋu interpreter to translate the data into English. Data underwent a progressive verbal relational content analysis to map and build a framework. RESULTS: A reproductive health literacy framework that privileges Yolŋu reproductive knowledge, practices and language was successfully co-designed. The framework was embedded in the metaphor of Pandanus mat and uses key cultural domains of Yolŋu identity as a connecting foundation to women's reproductive knowledges and ceremonial milestones. CONCLUSIONS: The framework offers a culturally responsive and multilingual approach to sensitively discuss and operationalise reproductive health literacy. The framework empowers Yolŋu cultural identities; accounts for both Yolŋu and Western medical knowledges; and honours participants' requests for "Two-Way" learning. SO WHAT?: This research demonstrates an innovative approach to co-designing a culturally responsive framework for reproductive health literacy in a complex and multilingual context. Such approaches offer a promising way forward for empowering Indigenous women to define reproductive health literacy and contribute to improving their reproductive health outcomes.

'Jumping around': exploring young women's behaviour and knowledge in relation to sexual health in a remote Aboriginal Australian community.

Sexual health indicators for young remote-living Aboriginal women are the worst of all of Australian women. This study aimed to describe and explore young women's behaviour and knowledge in relation to sexual health, as well as to provide health professionals with cross-cultural insights to assist with health practice. A descriptive ethnographic study was conducted, which included: extended ethnographic field work in one remote community over a six-year period; community observation and participation; field notes; semi-structured interviews; group reproductive ethno-physiology drawing and language sessions; focus-group sessions; training and employment of Aboriginal research assistants; and consultation and advice from a local reference group and a Cultural Mentor. Findings reveal that young women in this remote community have a very poor biomedical understanding of sexually transmitted infections and contraception. This is further compounded by not speaking English as a first language, low literacy levels and different beliefs in relation to body functions. In their sexual relationships, young women often report experiences involving multiple casual partners, marijuana use and violence. Together, the findings contribute to a better understanding of the factors underlying sexual health inequity among young Aboriginal women in Australia.

"It's all about cultural understanding": A reflexive thematic analysis of women's experiences at a dedicated refugee midwifery group practice service.

BACKGROUND: Inequitable maternity care provision in high-income countries contributes to ongoing poor outcomes for women of refugee backgrounds. To address barriers to quality maternity care and improve health equity, a co-designed maternity service incorporating community-based group antenatal care, onsite social worker and interpreters, continuity of midwifery carer through a caseload design with 24/7 phone access was implemented for women of refugee background. OBJECTIVE: To explore and describe women's experiences and perceptions of care from a dedicated Refugee Midwifery Group Practice service. DESIGN: Qualitative exploratory descriptive study using focus group discussions and interpreters. SETTING: The study was conducted at a community-based Refugee Midwifery Group Practice service in a tertiary maternity hospital in Brisbane, Australia. METHODS: We conducted three focus group discussions (June - December 2020) with 16 women, born in six different countries, in three language groups: Sudanese Arabic, Somali, and English. We used reflexive thematic analysis to interpret women's perspectives and generate informed meanings of experiences of care. RESULTS: We generated four themes 1) accessibility of care, 2) women feeling accepted, 3) value of relationality, and 4), service expansion and promotion. Results demonstrate positive experiences and acceptability due to easy access, strong woman-midwife relationships, and culturally safe care. CONCLUSION: The service addressed concerns raised in an early evaluation and provides evidence that redesigning maternity services to meet the needs of women with a refugee background speaking multiple languages from many countries is possible and promotes access, use, and satisfaction with care, contributing to improved health equity and perinatal outcomes.

Djäkamirr: Exploring principles used in piloting the training of First Nations doulas in a remote multilingual Northern Australian community setting.

PROBLEM AND BACKGROUND: There is growing evidence in First Nations doula care as a strategy to address perinatal inequities and improve maternal care experiences. However, there is no evidence around the approach and principals required to successfully deliver First Nations doula (childbirth) training. QUESTION/AIM: To explore and describe the approach and principles used in piloting the training of First Nations doulas in remote, multilingual Northern Australian community settings. METHODS: Case study with participant interviews to identify principles underpinning our Decolonising Participatory Action Research (D-PAR) approach and training delivery. FINDINGS: Reflections on our D-PAR research process identified enabling principles: 1) Use of metaphors for knowledge reflexivity, 2) Accommodate cultural constructions of time 3) Practice mental agility at the Cultural Interface, 4) Advocate and address inequities, 5) Prioritise meaningful curriculums and resources, 6) Establish cross-cultural recognition and validity; and 7) Ensure continuity of First Nations culture and language. DISCUSSION: The success of our doula training pilot disrupts a pervasive colonial narrative of First Nation deficit and demonstrates that respectful, genuine, and authentic partnerships can power transformative individual and collective community change. Our D-PAR approach assumes mutual learning and expertise between community and researchers. It is well suited to collaborative design and delivery of First Nations reproductive health training.

Enabling the context for Aboriginal and Torres Strait Islander Community Controlled Birthing on Country services: Participatory action research.

PROBLEM: Establishment of Birthing on Country services owned and governed by Aboriginal and Torres Strait Islander Community Controlled Health Services has been slow. BACKGROUND: Birthing on Country services have demonstrated health and cost benefits and require redesign of maternity care. During the Building On Our Strengths feasibility study, use of endorsed midwives and licensing of birth centres has proven difficult. QUESTION: What prevents Community Controlled Health Services from implementing Birthing on Country services in Queensland and New South Wales? METHODS: Participatory action research identified implementation barriers. We conducted iterative document analysis of instruments to inform government lobbying through synthesis of policy, economic, social, technological, legal, and environmental factors. FINDINGS: Through cycles of participatory action research, we analysed 17 documents: 1) policy barriers prevent Community Controlled Health Services from employing endorsed midwives to provide intrapartum care in public hospitals; 2) economic barriers include lack of sustainable funding stream and inadequate Medicare-billing for endorsed midwives; and 3) legal barriers require a medical practitioner in a birth centre. While social barriers (e.g., colonisation, medicalisation) underpin regulations, these were beyond the scope; technological and environmental barriers were not identified. DISCUSSION: Findings are consistent with the literature on barriers to midwifery practice. Recommendations include a national audit of barriers to Birthing on Country services including healthcare practice insurance, and development of a funding stream. Additionally, private maternity facility regulation must align with evidence on safe birth centre operation. CONCLUSION: Government can address barriers to scale-up of Aboriginal and Torres Strait Islander Community Controlled Birthing on Country services.