A specially designed domed‐cones template for needles (seeds) fixation and incline insertion in prostate implant brachytherapy

Yin, Zhao-Sheng; Tang, Shi-Qiang; Shi, Junpeng; Chen, Fen; Wu, Jiaming; Jen, Yee‐Min

doi:10.1120/jacmp.v17i1.5833

Cited by 2 publications

(2 citation statements)

References 19 publications

(17 reference statements)

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“…There are some needle guidance devices that use a grid mesh to provide a reference for entry point 14 . However, the simple repeating patterns used in these grids complicate the identification of the relationship between the grid and anatomy on imaging.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of a novel MRI-safe needle guidance toolkit for streamlined arthrography procedures

Monfaredi,

Yarmolenko,

Lee

et al. 2023

Sci Rep

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Currently, Magnetic Resonance arthrography procedures require two rooms and two imaging modalities: fluoroscopically guided needle insertion in a fluoroscopy suite, followed by diagnostic MRI in a separate MRI suite. The use of fluoroscopy for needle placement exposes patients to ionizing radiation, which is an important concern, especially in pediatrics. The need for two different rooms and coordinating times for these rooms complicates hospital resource scheduling and logistics. In addition, the added delays could expose younger children to additional risks associated with the use of general anesthesia. To address these issues, we propose a new technique to streamline the arthrography procedure. Our proposed technology aims to eliminate exposure to ionizing radiation and to streamline arthrography procedures that are conducted solely under MRI. This toolkit consists of a 3D slicer-based user interface, a spatially unique silicone grid template, and a hand-held needle guidance device. Together, these tools are intended to simplify and shorten the procedure while maintaining accuracy and precision comparable to the current gold standard procedure. In our cadaver study, we evaluated the feasibility and accuracy of our novel MRI-safe Needle Guidance Toolkit for MRI arthrography procedures, achieving an average targeting accuracy of 3.2 ± 1.0 mm. The results presented in this study showed the feasibility and promise of our novel MRI-safe needle guidance toolkit for arthrography procedures.

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Section: Discussionmentioning

confidence: 99%

Evaluation of a novel MRI-safe needle guidance toolkit for streamlined arthrography procedures

Monfaredi,

Yarmolenko,

Lee

et al. 2023

Sci Rep

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show abstract

“…Pai et al 13 proposed a simpler technique to improve prostatic BT seed placement, the first two needles are implanted simultaneously; through a prostatic BT grid, this reduces subsequent deflection of the prostate when using a seed implanter. In addition, there are some other studies showing that stiffer tungsten carbide needles, 14 modification of the transperineal grid reduce prostatic deflection, 15 the use of needles with incorporated electromagnetic fusion sensors, 16 mosquito proboscis-inspired needle, 17 a specially designed domed-cones template for needles fixation, and incline insertion in prostate implant BT, 18 this new technique can be further used on the soft tissue stabilization device.…”

Section: Introductionmentioning

confidence: 99%

Design of a seed implantation robot with counterbalance and soft tissue stabilization mechanism for prostate cancer brachytherapy

Wang

Liang

et al. 2021

International Journal of Advanced Robotic Systems

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This article focuses on the topic of the structural design of surgical radioactive surgery robot for prostate cancer. To improve the weight-to-payload ratio of surgery robot end-effector, the energy consumption and stability of robot joint drive and reducing the displacement and deformation of needle insertion in soft tissue. This article discusses the new static torque balancing method and multi-needle insertion soft tissue stabilization mechanisms that may be used in previously articulated seed implantation robots. Compared with the existing balancing system schemes, we adopt the idea of mutual conversion of gravitational potential energy and elastic potential energy and establish a static balancing model. With preloaded displacement parameter of the spring α, the variable gravity torque balance of robot arm can be achieved. Torque and equivalent gravity balancing distribution with the spring balance system and the quantitative evaluation experiment were performed, and experiment results provide evidence that these spring balance devices can basically compensate the gravity torque of the robot arm. In addition, we used nonlinear spring–damper model to establish multi-needles insertion soft tissue force model. Then, a variable multi-needle insertion soft tissue stabilization device is designed with six working modes. The innovative design of this device is the use of the first four needles that are introduced simultaneously on either side of the midline. Initially completed displacement simulation of different numbers of needle insertion prostate tissue, experiment results indicate that multi-needle puncture mechanism could reduce prostate displacement in the y- or z-direction. By this method, the prostate may be fixed, thus this mechanism maybe reduces rotation of the prostate and enabling subsequent needles to be inserted accurately.

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A specially designed domed‐cones template for needles (seeds) fixation and incline insertion in prostate implant brachytherapy

Cited by 2 publications

References 19 publications

Evaluation of a novel MRI-safe needle guidance toolkit for streamlined arthrography procedures

Evaluation of a novel MRI-safe needle guidance toolkit for streamlined arthrography procedures

Design of a seed implantation robot with counterbalance and soft tissue stabilization mechanism for prostate cancer brachytherapy

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