24 The abdominal and rib cage contributions to tidal breathing differ between REM and NREM sleep. We 25 hypothesized that abdominal relative contribution during NREM and REM sleep would be altered in 26 different directions when comparing sleep on Earth with sleep in sustained microgravity (μG), due to 27 conformational changes and differences in coupling between the rib cage and the abdominal ...

BACKGROUND To investigate the potential dosimetric and clinical benefits of Deep Inspiration Breath-Hold (DIBH) technique during radiotherapy of breast cancer compared with Free Breathing (FB). METHODS Eight left-sided breast cancer patients underwent a supervised breath hold during treatment. For each patient, two CT scans were acquired with and without breath hold, and virtual simulation wa...

24 The abdominal and rib cage contributions to tidal breathing differ between REM and NREM sleep. We 25 hypothesized that abdominal relative contribution during NREM and REM sleep would be altered in 26 different directions when comparing sleep on Earth with sleep in sustained microgravity (μG), due to 27 conformational changes and differences in coupling between the rib cage and the abdominal ...

A survey was conducted in the northern district of Yamaguchi, Japan to determine the relationship between neurological diving accidents and risk factors among commercial breath-hold divers (Ama). A questionnaire was distributed to 381 Ama divers who are members of the Ama diving union. We sought information on their dive practices (depth of single dive, single dive time, surface interval, lengt...

PURPOSE Combined ultrafast 90°+90° kV-MV-CBCT within single breath-hold of 15s has high clinical potential for accelerating imaging for lung cancer patients treated with deep inspiration breath-hold (DIBH). For clinical feasibility of kV-MV-CBCT, dose exposure has to be small compared to prescribed dose. In this study, kV-MV dose output is evaluated and compared to clinically-established kV-CBC...

We have previously developed image-guided navigation systems for thoracic abdominal interventions utilizing a three dimensional (3D) Cone-Beam CT (CBCT) image acquired at breath-hold. These systems required the physician to perform the intervention in a gated manner, with actions performed at the same respiratory phase in which the CBCT image was acquired. This approach is not always applicable...