Atlas-based motion correction for on-line mr temperature mapping

Senneville, B.D. de; Quesson, Bruno; Desbarats, Pascal; Salomir, Rarès; Palussière, Jean; Moonen, Chrit

doi:10.1109/icip.2004.1421628

Cited by 14 publications

(15 citation statements)

References 11 publications

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“…Such tools will become indispensable for accurate guidance and control of local thermal therapies, in particular when treating mobile tissues. (For complete details, see (68)). …”

Section: Resultsmentioning

confidence: 99%

“…The selection of baseline image for temperature computation can be based on navigator echoes data, on the displacement of an active tracking coil (47), or on the displacement estimate on anatomical images with image registration algorithms (68). This approach can be used either to perform rapid acquisition (acquisition time per image faster than typical motion period) without synchronisation techniques in order to improve the temporal resolution (47,68), or to improve the quality of the thermometry when periodical motion is reduced (69).…”

Section: Multi-baselinementioning

confidence: 99%

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Magnetic resonance temperature imaging

Senneville¹,

Quesson²,

Moonen³

2005

International Journal of Hyperthermia

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151

115

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Continuous, real-time 3D temperature mapping during a hyperthermic procedure may provide enhanced safety by visualizing temperature maps in and around the treated region, improved efficiency by adapting local energy deposition with feedback coupling algorithms, and therapy endpoints based on the accumulated thermal dose. Noninvasive mapping of temperature changes can be achieved with MRI, and may be based on temperature dependent MRI parameters. The excellent linearity of the temperature dependency of the proton resonance frequency (PRF) and its near-independence with respect to tissue type make the PRF-based methods the preferred choice for many applications, in particular at mid to high field strength (≥ 0.5 T). The PRF methods employ RF-spoiled gradient echo imaging methods, and incorporate fat suppression techniques for most organs. A standard deviation of less than 1 o C, for a temporal resolution below 1 s and a spatial resolution of about 2 mm, is feasible for immobile tissues. Special attention is paid to methods for reduction of artifacts in MR temperature mapping caused by intra-scan and inter-scan motion, and motion and temperature-induced susceptibility effects in mobile tissues. Real-time image processing and visualization techniques, together with accelerated MRI acquisition techniques, are described because of their primary importance for real-time, image guided, therapy guidance.3

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“…Such tools will become indispensable for accurate guidance and control of local thermal therapies, in particular when treating mobile tissues. (For complete details, see (68)). …”

Section: Resultsmentioning

confidence: 99%

Section: Multi-baselinementioning

confidence: 99%

Magnetic resonance temperature imaging

Senneville¹,

Quesson²,

Moonen³

2005

International Journal of Hyperthermia

Self Cite

151

115

View full text Add to dashboard Cite

show abstract

“…In the proposed approach, image-processing techniques are used to estimate online organ displacements from anatomical images (28,29). Image registration allows one to estimate organ displacement with an excellent spatial resolution as compared to other existing approaches (34).…”

Section: Estimation Of Tissue Displacement During Motionmentioning

confidence: 99%

“…This step is performed prior to the therapeutic intervention without hyperthermia. An atlas of motion is constructed with MR images acquired during this pretreatment period (28,29). For this purpose, 50 images are acquired to sample the periodical motion.…”

Section: Correction Of Periodical Motion Artifacts In Temperature Mapsmentioning

confidence: 99%

“…When intrascan motion artifacts are limited by the use of fast imaging techniques and/or synchronization of image acquisition with the periodic motion (e.g., respiratory gating or navigator echo (27)), image processing can be used to further improve the quality of thermal maps. Some algorithms developed to correct temperature maps have been tested in patient studies on the basis of temperature stability in the absence of heating (28,29). These studies have shown the efficiency of atlas-based multiple reference images.…”

mentioning

confidence: 99%

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Real‐time adaptive methods for treatment of mobile organs by MRI‐controlled high‐intensity focused ultrasound

Senneville

Mougenot

Moonen

2007

Magnetic Resonance in Med

174

165

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Focused ultrasound (US) is a unique and noninvasive technique for local deposition of thermal energy deep inside the body. MRI guidance offers the additional benefits of excellent target visualization and continuous temperature mapping. However, treating a moving target poses severe problems because 1) motionrelated thermometry artifacts must be corrected, 2) the US focal point must be relocated according to the target displacement. In this paper a complete MRI-compatible, high-intensity focused US (HIFU) system is described together with adaptive methods that allow continuous MR thermometry and therapeutic US with real-time tracking of a moving target, online motion correction of the thermometry maps, and regional temperature control based on the proportional, integral, and derivative method. The hardware is based on a 256-element phased-array transducer with rapid electronic displacement of the focal point. The exact location of the target during US firing is anticipated using automatic analysis of periodic motions.

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Online correction of respiratory‐induced field disturbances for continuous MR‐thermometry in the breast

Hey

Maclair

Lepetit‐Coiffé

et al. 2009

Magnetic Resonance in Med

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MR-thermometry allows monitoring of the local temperature evolution during minimally invasive interventional therapies. However, for the particular case of MR-thermometry in the human breast, magnetic field variations induced by the respiratory cycle lead to phase fluctuations requiring a suitable correction strategy to prevent thermometry errors. For this purpose a look-up-table-based multibaseline approach as well as a model-based correction algorithm were applied to MRthermometry to correct for the periodic magnetic field changes. The proposed correction method is compatible with a variety of sensors monitoring the current respiratory state. The ability to remove phase artefacts during MR-thermometry of the human breast was demonstrated experimentally in five healthy volunteers during 3 min of free-breathing using pencilbeam navigators for respiratory control. An increase of 170-530% in temperature precision was observed for the lookup-table-based approach, whereas a further improvement by 16-36% could be achieved by applying the extended modelbased correction.

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Atlas-based motion correction for on-line mr temperature mapping

Cited by 14 publications

References 11 publications

Magnetic resonance temperature imaging

Magnetic resonance temperature imaging

Real‐time adaptive methods for treatment of mobile organs by MRI‐controlled high‐intensity focused ultrasound

Online correction of respiratory‐induced field disturbances for continuous MR‐thermometry in the breast

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