Keyhole-true-FISP: Schnelle T2-gewichtete bildgebung fur die interventionelle MRT bei 0,2 T

M. Wendt; F. Wacker; K. J. Wolf; J. S. Lewin; J. L. Duerk

Keyhole-true-FISP: Schnelle T₂-gewichtete bildgebung fur die interventionelle MRT bei 0,2 T

Translated title of the contribution: True FISP keyhole: Fast T₂ weighted imaging for interventional MRI at 0.2 T

M. Wendt, F. Wacker, K. J. Wolf, J. S. Lewin, J. L. Duerk

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Purpose: The aim of this study is to introduce a fast, T₂ weighted true FISP keyhole sequence implemented on an open C arm low field magnetic resonance (MR) scanner for interventional procedure guidance. Method: Following the acquisition of a reference data set using a true FISP (fast Imaging with Steady Precission) sequence, only the 32 central raw data lines (keyhole) are acquired in a fluoroscopic-like mode enabling continuous image reconstruction and update. The keyhole true-FISP sequence was tested in animal experiments and used in MR-guided interventions in 10 patients. Results: The described true FISP keyhole sequence is characterized by an image frame rate of 2.5 images per second and a T₂-like contrast. Due to system constraints with respect to the reconstruction, the actual displaying of images was delayed by up to 180 ms. Conclusions: The use of the described keyhole sequence enabled a fluoroscopy-like guidance of interventional devices in an open, low-field system.

Translated title of the contribution	True FISP keyhole: Fast T₂ weighted imaging for interventional MRI at 0.2 T
Original language	German
Pages (from-to)	391-393
Number of pages	3
Journal	RoFo Fortschritte auf dem Gebiete der Rontgenstrahlen und der Neuen Bildgebenden Verfahren
Volume	170
Issue number	4
State	Published - Apr 1999
Externally published	Yes

Keywords

Fast MR imaging
Interventional MRI
Keyhole
True FISP

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging

Cite this

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title = "Keyhole-true-FISP: Schnelle T2-gewichtete bildgebung fur die interventionelle MRT bei 0,2 T",

abstract = "Purpose: The aim of this study is to introduce a fast, T2 weighted true FISP keyhole sequence implemented on an open C arm low field magnetic resonance (MR) scanner for interventional procedure guidance. Method: Following the acquisition of a reference data set using a true FISP (fast Imaging with Steady Precission) sequence, only the 32 central raw data lines (keyhole) are acquired in a fluoroscopic-like mode enabling continuous image reconstruction and update. The keyhole true-FISP sequence was tested in animal experiments and used in MR-guided interventions in 10 patients. Results: The described true FISP keyhole sequence is characterized by an image frame rate of 2.5 images per second and a T2-like contrast. Due to system constraints with respect to the reconstruction, the actual displaying of images was delayed by up to 180 ms. Conclusions: The use of the described keyhole sequence enabled a fluoroscopy-like guidance of interventional devices in an open, low-field system.",

keywords = "Fast MR imaging, Interventional MRI, Keyhole, True FISP",

author = "M. Wendt and F. Wacker and Wolf, {K. J.} and Lewin, {J. S.} and Duerk, {J. L.}",

year = "1999",

month = apr,

language = "German",

volume = "170",

pages = "391--393",

journal = "RoFo Fortschritte auf dem Gebiete der Rontgenstrahlen und der Neuen Bildgebenden Verfahren",

issn = "0936-6652",

publisher = "Georg Thieme Verlag",

number = "4",

}

TY - JOUR

T1 - Keyhole-true-FISP

T2 - Schnelle T2-gewichtete bildgebung fur die interventionelle MRT bei 0,2 T

AU - Wendt, M.

AU - Wacker, F.

AU - Wolf, K. J.

AU - Lewin, J. S.

AU - Duerk, J. L.

PY - 1999/4

Y1 - 1999/4

N2 - Purpose: The aim of this study is to introduce a fast, T2 weighted true FISP keyhole sequence implemented on an open C arm low field magnetic resonance (MR) scanner for interventional procedure guidance. Method: Following the acquisition of a reference data set using a true FISP (fast Imaging with Steady Precission) sequence, only the 32 central raw data lines (keyhole) are acquired in a fluoroscopic-like mode enabling continuous image reconstruction and update. The keyhole true-FISP sequence was tested in animal experiments and used in MR-guided interventions in 10 patients. Results: The described true FISP keyhole sequence is characterized by an image frame rate of 2.5 images per second and a T2-like contrast. Due to system constraints with respect to the reconstruction, the actual displaying of images was delayed by up to 180 ms. Conclusions: The use of the described keyhole sequence enabled a fluoroscopy-like guidance of interventional devices in an open, low-field system.

AB - Purpose: The aim of this study is to introduce a fast, T2 weighted true FISP keyhole sequence implemented on an open C arm low field magnetic resonance (MR) scanner for interventional procedure guidance. Method: Following the acquisition of a reference data set using a true FISP (fast Imaging with Steady Precission) sequence, only the 32 central raw data lines (keyhole) are acquired in a fluoroscopic-like mode enabling continuous image reconstruction and update. The keyhole true-FISP sequence was tested in animal experiments and used in MR-guided interventions in 10 patients. Results: The described true FISP keyhole sequence is characterized by an image frame rate of 2.5 images per second and a T2-like contrast. Due to system constraints with respect to the reconstruction, the actual displaying of images was delayed by up to 180 ms. Conclusions: The use of the described keyhole sequence enabled a fluoroscopy-like guidance of interventional devices in an open, low-field system.

KW - Fast MR imaging

KW - Interventional MRI

KW - Keyhole

KW - True FISP

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JO - RoFo Fortschritte auf dem Gebiete der Rontgenstrahlen und der Neuen Bildgebenden Verfahren

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ER -

Keyhole-true-FISP: Schnelle T₂-gewichtete bildgebung fur die interventionelle MRT bei 0,2 T

Abstract

Keywords

ASJC Scopus subject areas

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