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An in-house self-held respiration monitoring device (SHRMD) was developed for providing deep inspiration breath hold (DIBH) radiotherapy. The use of SHRMD is evaluated in terms of reproducibility, stability and heart dose reduction.
Methods and materials:
Sixteen patients receiving radiotherapy of left breast cancer were planned for treatment with both a free breathing (FB) scan and a DIBH scan. Both FB and DIBH plans were generated for comparison of the heart, left anterior descending (LAD) artery and lung dose. All patients received their treatments with DIBH using SHRMD. Megavoltage cine images were acquired during treatments for evaluating the reproducibility and stability of treatment position using SHRMD.
Compared with FB plans, the maximum dose to the heart by DIBH technique with SHRMD was reduced by 29·9 ± 15·6%; and the maximum dose of the LAD artery was reduced by 41·6 ± 18·3%. The inter-fractional overall mean error was 0·01 cm and the intra-fractional overall mean error was 0·04 cm.
This study demonstrated the potential benefits of using the SHRMD for DIBH to reduce the heart and LAD dose. The patients were able to perform stable and reproducible DIBHs.
Research suggests that an 8-week mindfulness-based cognitive therapy
(MBCT) course may be effective for generalised anxiety disorder
To compare changes in anxiety levels among participants with GAD randomly
assigned to MBCT, cognitive–behavioural therapy-based psychoeducation and
In total, 182 participants with GAD were recruited (trial registration
number: CUHK_CCT00267) and assigned to the three groups and followed for
5 months after baseline assessment with the two intervention groups
followed for an additional 6 months. Primary outcomes were anxiety and
Linear mixed models demonstrated significant group × time interaction
(F(4,148) = 5.10, P = 0.001) effects
for decreased anxiety for both the intervention groups relative to usual
care. Significant group × time interaction effects were observed for
worry and depressive symptoms and mental health-related quality of life
for the psychoeducation group only.
These results suggest that both of the interventions appear to be
superior to usual care for the reduction of anxiety symptoms.
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