WE-C-116-05: Residual Respiratory Motion Management Within a Gating Window Using Quasi-Breath-Hold (QBH) Biofeedback

2013 ◽  
Vol 40 (6Part29) ◽  
pp. 484-484
Author(s):  
Taeho Kim ◽  
Danny Lee ◽  
Paul Keall ◽  
Rena Lee ◽  
Siyong Kim
Keyword(s):  
Respiratory Motion ◽  
Breath Hold ◽  
Motion Management ◽  
Gating Window

Quasi-breath-hold technique using personalized audio-visual biofeedback for respiratory motion management in radiotherapy

2011 ◽  
Vol 38 (6Part1) ◽  
pp. 3114-3124 ◽  
Author(s):  
Yang-Kyun Park ◽  
Siyong Kim ◽  
Hwiyoung Kim ◽  
II Han Kim ◽  
Kunwoo Lee ◽  
...  
Keyword(s):  
Respiratory Motion ◽  
Breath Hold ◽  
Motion Management ◽  
Visual Biofeedback

scholarly journals Impact of Breath-Hold Level on Positional Error in Hepatobiliary Radiotherapy with Breath-Hold Respiratory Control

2020 ◽  
Author(s):  
Tzu-Jie Huang ◽  
Yun Tien ◽  
Jian-Kuen Wu ◽  
Wen-Tao Huang ◽  
Jason Chia-Hsien Cheng
Keyword(s):  
Respiratory Motion ◽  
Respiratory Control ◽  
Three Dimensions ◽  
Cone Beam ◽  
Breath Hold ◽  
Positional Error ◽  
Control Methods ◽  
Related Factors ◽  
Motion Management ◽  
Factors Associated

Abstract Background : Respiratory motion management with breath hold for patients with hepatobiliary cancers remains a challenge in the precise positioning for radiotherapy. We compared different image-guided alignment markers for estimating positional errors, and investigated the factors associated with positional errors under breath-hold control. Methods : Spirometric motion management system (SDX) for breath holds was used in 44 patients with hepatobiliary tumor. Among them, 28 patients had a stent or embolized materials (lipiodol) as alignment markers. Cone-beam computed tomography (CBCT) and kV-orthogonal images were compared for accuracy between different alignment references. Breath-hold level (BHL) was practiced, and BHL variation (ΔBHL) was defined as the standard deviation in differences between actual BHLs and baseline BHL. Mean BHL, ΔBHL, and body-related factors were analyzed for the association with positional errors. Results : Using the reference CBCT, the correlations of positional errors were significantly higher in those with stent/lipiodol than when the vertebral bone was used for alignment in three dimensions. Patients with mean BHL >1.4 L were significantly taller (167.6 cm vs. 161.6 cm, p=0.03) and heavier (67.1 kg vs. 57.4 kg, p=0.02), and had different positional error in the craniocaudal direction (-0.26 cm [caudally] vs. +0.09 cm [cranially], p=0.01) than those with mean BHL <1.4 L. Positional errors were similar for patients with ΔBHL<0.03 L and >0.03 L. Conclusion : Under rigorous breath-hold respiratory control, BHL correlated with body weight and height. With more accurate alignment reference by stent/lipiodol, actual BHL but not breath-hold variation was associated with craniocaudal positional errors.

SU-E-T-358: Double-Ends Quasi-Breath-Hold (DE-QBH) Technique for Respiratory Motion Management

2013 ◽  
Vol 40 (6Part16) ◽  
pp. 286-287 ◽  
Author(s):  
S Kim ◽  
Y Park ◽  
J Lee ◽  
K Choi ◽  
S Ye
Keyword(s):  
Respiratory Motion ◽  
Breath Hold ◽  
Motion Management

scholarly journals Impact of Breath-Hold Level on Positional Error Aligned by Stent/Lipiodol in Hepatobiliary Radiotherapy with Breath-Hold Respiratory Control

2020 ◽  
Author(s):  
Tzu-Jie Huang ◽  
Yun Tien ◽  
Jian-Kuen Wu ◽  
Wen-Tao Huang ◽  
Jason Chia-Hsien Cheng
Keyword(s):  
Respiratory Motion ◽  
Respiratory Control ◽  
Three Dimensions ◽  
Cone Beam ◽  
Breath Hold ◽  
Positional Error ◽  
Related Factors ◽  
Motion Management ◽  
Factors Associated ◽  
Image Guided

Abstract Background: Respiratory motion management with breath hold for patients with hepatobiliary cancers remain a challenge in the precise positioning for radiotherapy. We compared different image-guided alignment markers for estimating positional errors, and investigated the factors associated with positional errors under breath-hold control.Methods: Spirometric motion management system (SDX) for breath holds was used in 44 patients with hepatobiliary tumor. Among them, 28 patients had a stent or embolized materials (lipiodol) as alignment markers. Cone-beam computed tomography (CBCT) and kV-orthogonal images were compared for accuracy between different alignment references. Breath-hold level (BHL) was practiced, and BHL variation (ΔBHL) was defined as the standard deviation in differences between actual BHLs and baseline BHL. Mean BHL, ΔBHL, and body-related factors were analyzed for the association with positional errors.Results: Using the reference CBCT, the correlations of positional errors were significantly higher in those with stent/lipiodol than when the vertebral bone was used for alignment in three dimensions. Patients with mean BHL >1.4 L were significantly taller (167.6 cm vs. 161.6 cm, p=0.03) and heavier (67.1 kg vs. 57.4 kg, p=0.02), and had different positional error in the craniocaudal direction (-0.26 cm [caudally] vs. +0.09 cm [cranially], p=0.01) than those with mean BHL <1.4 L. Positional errors were similar for patients with ΔBHL<0.03 L and >0.03 L.Conclusion: Under rigorous breath-hold respiratory control, BHL correlated with body weight and height. With more accurate alignment reference by stent/lipiodol, actual BHL but not breath-hold variation was associated with craniocaudal positional errors.

scholarly journals Audio-Visual Biofeedback for Respiratory Motion Management: Comparison of the Reproducibility of Breath-Holding between Visual and Audio Guidance

2018 ◽  
Vol 09 (13) ◽  
pp. 2286-2294
Author(s):  
Naoki Sano ◽  
Masahide Saito ◽  
Hiroshi Onishi ◽  
Kengo Kuriyama ◽  
Takafumi Komiyama ◽  
...  
Keyword(s):  
Respiratory Motion ◽  
Breath Holding ◽  
Motion Management ◽  
Visual Biofeedback

scholarly journals Recent advances in Surface Guided Radiation Therapy

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
P. Freislederer ◽  
M. Kügele ◽  
M. Öllers ◽  
A. Swinnen ◽  
T.-O. Sauer ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Radiation Therapy ◽  
Imaging Technique ◽  
Patient Treatment ◽  
Quality Assurance Program ◽  
Breath Hold ◽  
Breast Irradiation ◽  
Clinical Practices ◽  
Motion Management ◽  
Wide Range

Abstract The growing acceptance and recognition of Surface Guided Radiation Therapy (SGRT) as a promising imaging technique has supported its recent spread in a large number of radiation oncology facilities. Although this technology is not new, many aspects of it have only recently been exploited. This review focuses on the latest SGRT developments, both in the field of general clinical applications and special techniques. SGRT has a wide range of applications, including patient positioning with real-time feedback, patient monitoring throughout the treatment fraction, and motion management (as beam-gating in free-breathing or deep-inspiration breath-hold). Special radiotherapy modalities such as accelerated partial breast irradiation, particle radiotherapy, and pediatrics are the most recent SGRT developments. The fact that SGRT is nowadays used at various body sites has resulted in the need to adapt SGRT workflows to each body site. Current SGRT applications range from traditional breast irradiation, to thoracic, abdominal, or pelvic tumor sites, and include intracranial localizations. Following the latest SGRT applications and their specifications/requirements, a stricter quality assurance program needs to be ensured. Recent publications highlight the need to adapt quality assurance to the radiotherapy equipment type, SGRT technology, anatomic treatment sites, and clinical workflows, which results in a complex and extensive set of tests. Moreover, this review gives an outlook on the leading research trends. In particular, the potential to use deformable surfaces as motion surrogates, to use SGRT to detect anatomical variations along the treatment course, and to help in the establishment of personalized patient treatment (optimized margins and motion management strategies) are increasingly important research topics. SGRT is also emerging in the field of patient safety and integrates measures to reduce common radiotherapeutic risk events (e.g. facial and treatment accessories recognition). This review covers the latest clinical practices of SGRT and provides an outlook on potential applications of this imaging technique. It is intended to provide guidance for new users during the implementation, while triggering experienced users to further explore SGRT applications.

SU-D-144-03: Respiratory Motion Management for High-Precision Small Animal Irradiation

2013 ◽  
Vol 40 (6Part4) ◽  
pp. 116-116 ◽  
Author(s):  
A Rubinstein ◽  
J Yang ◽  
R Martin ◽  
C Kingsley ◽  
J Delacerda ◽  
...  
Keyword(s):  
High Precision ◽  
Respiratory Motion ◽  
Small Animal ◽  
Motion Management
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