A new irradiation system for lung cancer combining linear accelerator, computed tomography, patient self-breath-holding, and patient-directed beam-control without respiratory monitoring devices

Oda, Hiroshi; Kuriyama, Kinya; Komiyama, Takafumi; Tanaka, Shiho; Sano, Nobuyuki; Aikawa, Yuri; Tateda, Yoshihito; Araki, Tsutomu; Ikenaga, Satoshi; Uematsu, Minoru

doi:10.1016/s0360-3016(02)04414-0

Cited by 79 publications

(33 citation statements)

References 13 publications

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“…The third technique is the BH method with no respiratory monitoring. Onishi et al (22) have reported that the differences in lung tumor position were 2.2 AE 1.1 mm in the SI direction under patients' self-estimated breath-holding, with no respiratory monitoring. In the present study, the intrafraction positional variations were normally distributed, with a focus on the first POI within each session (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Positional Reproducibility of Pancreatic Tumors Under End-Exhalation Breath-Hold Conditions Using a Visual Feedback Technique

Nakamura

Shibuya

Shiinoki

et al. 2011

International Journal of Radiation Oncology*Biology*Physics

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Section: Discussionmentioning

confidence: 99%

“…The breath-hold (BH) technique reduces the impact of respiratory motion and has been applied successfully in treatment of lung and liver cancer patients (17)(18)(19)(20)(21)(22). Our group has also shown that higher stability of the pancreatic tumor position was observed at end exhalation (EE) than at endinhalation (23).…”

Section: Introductionmentioning

confidence: 95%

Positional Reproducibility of Pancreatic Tumors Under End-Exhalation Breath-Hold Conditions Using a Visual Feedback Technique

Nakamura

Shibuya

Shiinoki

et al. 2011

International Journal of Radiation Oncology*Biology*Physics

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“…The third approach includes, in the same room, a standard CT scanner and a linear accelerator sharing the same PSS onto which the patient is positioned. In (Onishi, et al, 2003) the CT scanner is moved using rails to image the patient. Once the CT scan has been acquired, the PSS is then rotated 180º such that the part of the patient that was imaged can receive the required dose of radiation.…”

Section: Imaging Devices For 4-d Imrtmentioning

confidence: 99%

Imaging and Control for Adaptive Radiotherapy

Haas

Bueno

Spriestersbach

et al. 2005

IFAC Proceedings Volumes

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This paper reviews existing techniques to deliver radiotherapy treatment and describes the requirements from a control engineering view point to adapt radiation delivery to organs motion. The first part describes recent evolution of radiotherapy research; the second part focuses on imaging modalities used in radiotherapy; the third part reviews image processing techniques to detect organ movement; the final section compares traditional PID with predictive control strategies for use in patient positioning devices.

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“…Various respiratory motion management strategies, for instance respiratory gating technique and breath-holding maneuver, have been proposed to reduce motion-related errors during treatment delivery. [16][17][18] Among them, the breath-holding maneuver has been widely used and adopted in clinical practices. Wunderink et al 19 reported that respiration-related tumor motion could be reduced to less than 5 mm with breath holding.…”

Section: Introductionmentioning

confidence: 99%

The Feasibility and Efficiency of Volumetric Modulated Arc Therapy-Based Breath Control Stereotactic Body Radiotherapy for Liver Tumors

Qiu

Zhang

et al. 2016

Technol Cancer Res Treat

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There are strong evidences showing the promising oncologic results of stereotactic body radiotherapy for liver tumors. This study aims to investigate the feasibility, plan quality, and delivery efficiency of image-guided volumetric modulated arc therapybased voluntary deep exhale breath-holding technique in the stereotactic body radiotherapy for liver tumors. Treatment was planned using volumetric modulated arc therapy with 2 modified partial arc and replanned using intensity modulated radiation therapy technique for comparison. Dosimetric parameters were calculated for plan quality assessment. Quality assurance studies included both point and multiple planar dose verifications. Daily cone beam computed tomography imaging was used to measure and correct positional errors for target volumes and critical structures immediately prior to and during treatment delivery. Total monitor units and delivery times were also evaluated. No significant dosimetric difference was found between volumetricmodulated arc therapy and conventional intensity modulated radiation therapy plans. Both techniques were able to minimize doses to organs at risk including normal liver, kidneys, spinal cord, and stomach. However, the average monitor units with volumetric-modulated arc therapy were significantly lower (29.2%) than those with intensity modulated radiation therapy (P ¼ .012). The average beam-on time in volumetric-modulated arc therapy plans was 22.2% shorter than that in intensity modulated radiation therapy plans. In conclusion, it is feasible to utilize volumetric modulated arc therapy in the treatment planning of stereotactic body radiotherapy for liver tumors under breath control mode. In comparison to conventional intensity modulated radiation therapy plans, volumetric modulated arc therapy plans are of high efficiency with less monitor units, shorter beam-on time, tolerable intrafractional errors as well as better dosimetrics, meriting further investigations, and clinical evaluations.

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A new irradiation system for lung cancer combining linear accelerator, computed tomography, patient self-breath-holding, and patient-directed beam-control without respiratory monitoring devices

Cited by 79 publications

References 13 publications

Positional Reproducibility of Pancreatic Tumors Under End-Exhalation Breath-Hold Conditions Using a Visual Feedback Technique

Positional Reproducibility of Pancreatic Tumors Under End-Exhalation Breath-Hold Conditions Using a Visual Feedback Technique

Imaging and Control for Adaptive Radiotherapy

The Feasibility and Efficiency of Volumetric Modulated Arc Therapy-Based Breath Control Stereotactic Body Radiotherapy for Liver Tumors

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