A clinical evaluation of visual feedback-guided breath-hold reproducibility of tumor location

Tadamasa Yoshitake, Yoshiyuki Shioyama, Katsumasa Nakamura, Ohga Saiji, Takeshi Nonoshita, Kayoko Ohnishi, Kotaro Terashima, Hidetaka Arimura, Hideki Hirata, Hiroshi Honda

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

The purpose of this study was to evaluate the reproducibility of visual feedback-guided breath-hold using a machine vision system with a charge-coupled device camera and a monocular head-mounted display. Sixteen patients with lung tumors who were treated with stereotactic radiotherapy were enrolled. A machine vision system with a charge-coupled device camera was used for monitoring respiration. A monocular head-mounted display was used to provide the patient with visual feedback about the breathing trace. The patients could control their breathing so that the breathing waveform would fall between the upper and lower threshold lines. Planning and treatment were performed under visual feedback-guided expiratory breath-hold. Electronic portal images were obtained during treatment. The range of cranial-caudal motion of the tumor location during each single breath-hold was calculated as the intra-breath-hold (intra-BH) variability. The maximum displacement between the two to five averaged tumor locations of each single breath-hold was calculated as the inter-breath-hold (inter-BH) variability. All 16 patients tolerated the visual feedback-guided breath-hold maneuvers well. The intra- and inter-BH variability of all patients was 1.5 0.6 mm and 1.2 0.5 mm, respectively. A visual feedback-guided breath-hold technique using the machine vision system is feasible with good breath-hold reproducibility.

元の言語英語
ページ(範囲)7171-7182
ページ数12
ジャーナルPhysics in Medicine and Biology
54
発行部数23
DOI
出版物ステータス出版済み - 11 24 2009

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Sensory Feedback
Respiration
Neoplasms
Head
Equipment and Supplies
Radiotherapy
Lung
Therapeutics

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

これを引用

A clinical evaluation of visual feedback-guided breath-hold reproducibility of tumor location. / Yoshitake, Tadamasa; Shioyama, Yoshiyuki; Nakamura, Katsumasa; Saiji, Ohga; Nonoshita, Takeshi; Ohnishi, Kayoko; Terashima, Kotaro; Arimura, Hidetaka; Hirata, Hideki; Honda, Hiroshi.

:: Physics in Medicine and Biology, 巻 54, 番号 23, 24.11.2009, p. 7171-7182.

研究成果: ジャーナルへの寄稿記事

Yoshitake, Tadamasa ; Shioyama, Yoshiyuki ; Nakamura, Katsumasa ; Saiji, Ohga ; Nonoshita, Takeshi ; Ohnishi, Kayoko ; Terashima, Kotaro ; Arimura, Hidetaka ; Hirata, Hideki ; Honda, Hiroshi. / A clinical evaluation of visual feedback-guided breath-hold reproducibility of tumor location. :: Physics in Medicine and Biology. 2009 ; 巻 54, 番号 23. pp. 7171-7182.
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