SU‐D‐110‐04: Visual Biofeedback Combined with MRI for Respiratory‐Gated MR Imaging

T. Kim, Tokihiro Yamamoto, P. Keall

Research output: Contribution to journalArticle

Abstract

Purpose: Irregular motion results in poor image quality, radiation targeting and tumor control. The aim of this study is to develop a novel respiratory motion control system using visual biofeedback combined with MRI and to demonstrate reduced respiratory motion artifacts and increase respiratory gating efficiency in MRI using the system. Methods: A visual biofeedback system has been combined with an MRI respiratory bellows belt at a 1.5T G.E. MRI system and at a 3T G.E. MRI system. The visual biofeedback system utilized (1) the external position information of the abdomen using an MR respiratory bellows belt to visually guide a patient's regular breathing within the magnet and (2) a respiratory gated Fast Spin Echo MR pulse sequence for MRI. The feasibility of respiratory motion control using the visual biofeedback within the MRI system has been tested in four volunteer studies without MRI scanning. Two MRI studies have been performed for image quality evaluation with/without the visual biofeedback system. All studies included a free breathing and a visual biofeedback breathing in a same day. Results: By using the visual biofeedback system with an MRI respiratory bellows belt, the respiratory motion reproducibility has been increased. Average RMSE (root mean square error) of breathing period has been reduced from 0.69s for free breathing to 0.38s for visual biofeedback breathing, while average RMSE of displacement changes insignificantly from 0.50cm of free breathing to 0.49cm of visual biofeedback breathing. In the obtained MR images, the image using visual biofeedback shows significant reduction of motion artefacts but respiratory gating efficiency improvement is insignificant with healthy volunteers. Conclusions: The study demonstrated the feasibility of respiratory motion control using visual biofeedback within the MRI system. This technique provides clinically applicable motion control in MRI scanning and improved MR image quality.

Original languageEnglish (US)
Number of pages1
JournalMedical Physics
Volume38
Issue number6
DOIs
StatePublished - Jan 1 2011
Externally publishedYes

Fingerprint

Respiration
Artifacts
Magnets
Feasibility Studies
Abdomen
Volunteers
Healthy Volunteers
Radiation
Neoplasms

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging

Cite this

SU‐D‐110‐04 : Visual Biofeedback Combined with MRI for Respiratory‐Gated MR Imaging. / Kim, T.; Yamamoto, Tokihiro; Keall, P.

In: Medical Physics, Vol. 38, No. 6, 01.01.2011.

Research output: Contribution to journalArticle

@article{ab172f94ca6844a493228284f9a010dc,
title = "SU‐D‐110‐04: Visual Biofeedback Combined with MRI for Respiratory‐Gated MR Imaging",
abstract = "Purpose: Irregular motion results in poor image quality, radiation targeting and tumor control. The aim of this study is to develop a novel respiratory motion control system using visual biofeedback combined with MRI and to demonstrate reduced respiratory motion artifacts and increase respiratory gating efficiency in MRI using the system. Methods: A visual biofeedback system has been combined with an MRI respiratory bellows belt at a 1.5T G.E. MRI system and at a 3T G.E. MRI system. The visual biofeedback system utilized (1) the external position information of the abdomen using an MR respiratory bellows belt to visually guide a patient's regular breathing within the magnet and (2) a respiratory gated Fast Spin Echo MR pulse sequence for MRI. The feasibility of respiratory motion control using the visual biofeedback within the MRI system has been tested in four volunteer studies without MRI scanning. Two MRI studies have been performed for image quality evaluation with/without the visual biofeedback system. All studies included a free breathing and a visual biofeedback breathing in a same day. Results: By using the visual biofeedback system with an MRI respiratory bellows belt, the respiratory motion reproducibility has been increased. Average RMSE (root mean square error) of breathing period has been reduced from 0.69s for free breathing to 0.38s for visual biofeedback breathing, while average RMSE of displacement changes insignificantly from 0.50cm of free breathing to 0.49cm of visual biofeedback breathing. In the obtained MR images, the image using visual biofeedback shows significant reduction of motion artefacts but respiratory gating efficiency improvement is insignificant with healthy volunteers. Conclusions: The study demonstrated the feasibility of respiratory motion control using visual biofeedback within the MRI system. This technique provides clinically applicable motion control in MRI scanning and improved MR image quality.",
author = "T. Kim and Tokihiro Yamamoto and P. Keall",
year = "2011",
month = "1",
day = "1",
doi = "10.1118/1.3611540",
language = "English (US)",
volume = "38",
journal = "Medical Physics",
issn = "0094-2405",
publisher = "AAPM - American Association of Physicists in Medicine",
number = "6",

}

TY - JOUR

T1 - SU‐D‐110‐04

T2 - Visual Biofeedback Combined with MRI for Respiratory‐Gated MR Imaging

AU - Kim, T.

AU - Yamamoto, Tokihiro

AU - Keall, P.

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Purpose: Irregular motion results in poor image quality, radiation targeting and tumor control. The aim of this study is to develop a novel respiratory motion control system using visual biofeedback combined with MRI and to demonstrate reduced respiratory motion artifacts and increase respiratory gating efficiency in MRI using the system. Methods: A visual biofeedback system has been combined with an MRI respiratory bellows belt at a 1.5T G.E. MRI system and at a 3T G.E. MRI system. The visual biofeedback system utilized (1) the external position information of the abdomen using an MR respiratory bellows belt to visually guide a patient's regular breathing within the magnet and (2) a respiratory gated Fast Spin Echo MR pulse sequence for MRI. The feasibility of respiratory motion control using the visual biofeedback within the MRI system has been tested in four volunteer studies without MRI scanning. Two MRI studies have been performed for image quality evaluation with/without the visual biofeedback system. All studies included a free breathing and a visual biofeedback breathing in a same day. Results: By using the visual biofeedback system with an MRI respiratory bellows belt, the respiratory motion reproducibility has been increased. Average RMSE (root mean square error) of breathing period has been reduced from 0.69s for free breathing to 0.38s for visual biofeedback breathing, while average RMSE of displacement changes insignificantly from 0.50cm of free breathing to 0.49cm of visual biofeedback breathing. In the obtained MR images, the image using visual biofeedback shows significant reduction of motion artefacts but respiratory gating efficiency improvement is insignificant with healthy volunteers. Conclusions: The study demonstrated the feasibility of respiratory motion control using visual biofeedback within the MRI system. This technique provides clinically applicable motion control in MRI scanning and improved MR image quality.

AB - Purpose: Irregular motion results in poor image quality, radiation targeting and tumor control. The aim of this study is to develop a novel respiratory motion control system using visual biofeedback combined with MRI and to demonstrate reduced respiratory motion artifacts and increase respiratory gating efficiency in MRI using the system. Methods: A visual biofeedback system has been combined with an MRI respiratory bellows belt at a 1.5T G.E. MRI system and at a 3T G.E. MRI system. The visual biofeedback system utilized (1) the external position information of the abdomen using an MR respiratory bellows belt to visually guide a patient's regular breathing within the magnet and (2) a respiratory gated Fast Spin Echo MR pulse sequence for MRI. The feasibility of respiratory motion control using the visual biofeedback within the MRI system has been tested in four volunteer studies without MRI scanning. Two MRI studies have been performed for image quality evaluation with/without the visual biofeedback system. All studies included a free breathing and a visual biofeedback breathing in a same day. Results: By using the visual biofeedback system with an MRI respiratory bellows belt, the respiratory motion reproducibility has been increased. Average RMSE (root mean square error) of breathing period has been reduced from 0.69s for free breathing to 0.38s for visual biofeedback breathing, while average RMSE of displacement changes insignificantly from 0.50cm of free breathing to 0.49cm of visual biofeedback breathing. In the obtained MR images, the image using visual biofeedback shows significant reduction of motion artefacts but respiratory gating efficiency improvement is insignificant with healthy volunteers. Conclusions: The study demonstrated the feasibility of respiratory motion control using visual biofeedback within the MRI system. This technique provides clinically applicable motion control in MRI scanning and improved MR image quality.

UR - http://www.scopus.com/inward/record.url?scp=85024775060&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85024775060&partnerID=8YFLogxK

U2 - 10.1118/1.3611540

DO - 10.1118/1.3611540

M3 - Article

AN - SCOPUS:85024775060

VL - 38

JO - Medical Physics

JF - Medical Physics

SN - 0094-2405

IS - 6

ER -