Interventional radiotherapy, also known as brachytherapy, is the use of sealed radioactive sources that directly deliver radiation to the tumor or tumor bed. Its unique dose distribution profile allows for high conformality, making it a very useful modality in the treatment of cancers in the head and neck, where different organs and substructures that serve various but related functions are situated close to each other. In recent years, we have seen several important technological breakthroughs in the field, especially regarding its application in head and neck cancers. These include advances in treatment delivery, dosimetry planning , image guidance , and catheter positioning techniques . These innovations, which often require interdisciplinary interventions, have resulted in enhanced treatment accuracy, and therefore, major clinical advantages in terms of increased local control and decreased toxicity, as well as economic benefits. In order to highlight the differences from old brachytherapy techniques, a more appropriate terminology should perhaps be adopted, to signify these advancements that resulted in new opportunities, approaches and better outcomes – interventional radiotherapy (IRT). Such a change in terminology will not only allow recognition of these advances, but also a meaningful distinction from obsolete techniques and suboptimal outcomes that are associated with traditional brachytherapy. This is very important in increasing awareness among professionals outside the field of radiation oncology. We briefly review these recent advances, the current indications, and future directions for IRT in head-and-neck cancers.
Brachytherapy

Background: The COVID-19 pandemic has caused a global public health emergency. High levels of fear and limited access to cancer treatment may jeopardize the delivery of optimal oncologic care, potentially influencing treatment outcomes. This study aimed to identify patients’ and their caregivers’ perception of safety and accessibility of cancer care during the COVID-19 pandemic. Methods: A cross-sectional survey of patients and caregivers at the Benavides Cancer Institute, University of Santo Tomas Hospital was performed from August to October 2020 using a 20-item investigator-developed questionnaire. Results: A total of 207 participants answered the survey. Frequency of hospital visits varied from none to more than ten times in the previous month; but having multiple postponements were uncommon. Eighty-two percent, 77%, 62%, and 55% of participants reported being afraid of contracting COVID-19 from other patients, hospital surroundings, hospital staff, and doctors, respectively. Twenty-six percent and 12% had difficulty finding transportation and passing through checkpoints, respectively. Twenty-eight percent strongly expressed financial limitations in prioritizing cancer care. Participants were amenable to the use of telemedicine and stringent protocols to reduce in-hospital transmission risk, but had some reluctance to spend out of their pockets for screening tests. Conclusion The perceived safety of cancer care was influenced by fears of contracting COVID-19; and accessibility was influenced by limited transportation and financial constraints. Despite these, multiple postponements and cancelled hospital visits were uncommon. Institutional approaches targeting these concerns will be crucial to ensure safe and timely delivery of cancer care during the COVID-19 pandemic and further mitigate its impact on oncologic outcomes.
COVID-19 ; Pandemics ; Safety

We review the evolution of Brachytherapy to interventional radiotherapy and its current and potential roles in HNC management, and the requirements and challenges towards its effective and sustainable implementation in SEA.
Brachytherapy ; Radiotherapy