2019
DOI: 10.1002/mp.13958
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Magnetic resonance and ultrasound image‐guided navigation system using a needle manipulator

Abstract: Purpose Image guidance is crucial for percutaneous tumor ablations, enabling accurate needle‐like applicator placement into target tumors while avoiding tissues that are sensitive to injury and/or correcting needle deflection. Although ultrasound (US) is widely used for image guidance, magnetic resonance (MR) is preferable due to its superior soft tissue contrast. The objective of this study was to develop and evaluate an MR and US multi‐modal image‐guided navigation system with a needle manipulator to enable … Show more

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Cited by 4 publications
(2 citation statements)
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References 39 publications
(66 reference statements)
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“…Therefore, further studies with coordinate registration are needed to ensure more accurate verification of the exact needle position and, in particular, the position of the needle tip. In a previous study, Yamada et al 35 applied real-time ultrasound imaging fused with reformatted static MR images and coordinate registration for needle guidance during MR-guided percutaneous tumor ablations and revealed targeting errors of 1.6 ± 0.6 mm. Last, the investigated sequence parameter settings need to be analyzed and adapted to clinical use cases.…”
Section: Discussionmentioning
confidence: 99%
“…Therefore, further studies with coordinate registration are needed to ensure more accurate verification of the exact needle position and, in particular, the position of the needle tip. In a previous study, Yamada et al 35 applied real-time ultrasound imaging fused with reformatted static MR images and coordinate registration for needle guidance during MR-guided percutaneous tumor ablations and revealed targeting errors of 1.6 ± 0.6 mm. Last, the investigated sequence parameter settings need to be analyzed and adapted to clinical use cases.…”
Section: Discussionmentioning
confidence: 99%
“…However, several issues remain to be resolved here, such as integration of, e.g., a coordinate system into the agar phantom and minimizing errors of measurement using the 2D T1 GRE sequence, taking into consideration that the distance between the grid and the needle will never be zero. Yamada et al recently made an attempt in this direction, as they applied real-time US imaging fused with reformatted static MR images and coordinate registration for needle guidance during MR-guided percutaneous tumor ablations, with a mean targeting error of 1.6 ± 0.6 mm 33 . However, to date there is a lack of similar studies using real-time MR sequences.…”
Section: Discussionmentioning
confidence: 99%