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Related Concept Videos

Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
Planar Rigid-Body Motion01:22

Planar Rigid-Body Motion

Understanding the movement of a rigid body in planar motion involves recognizing that every particle within this body is traversing a path that maintains a consistent distance from a specific plane. This concept is fundamental in the study of physics and mechanical engineering, and it allows us to comprehend better how objects move in space.
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...

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Related Experiment Video

Updated: May 25, 2026

Three-Dimensional Finger Motion Tracking during Needling: A Solution for the Kinematic Analysis of Acupuncture Manipulation
08:27

Three-Dimensional Finger Motion Tracking during Needling: A Solution for the Kinematic Analysis of Acupuncture Manipulation

Published on: October 28, 2021

Interactive Motion Planning for Steerable Needles in 3D Environments with Obstacles.

Sachin Patil, Ron Alterovitz

    Proceedings of the ... IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics. IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics
    |February 2, 2012
    PubMed
    Summary
    This summary is machine-generated.

    A new algorithm plans motion for steerable needles in complex 3D spaces, enabling minimally invasive surgery. This fast planning allows real-time adjustments and improved access to difficult clinical targets.

    More Related Videos

    Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
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    Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

    Published on: August 21, 2018

    Related Experiment Videos

    Last Updated: May 25, 2026

    Three-Dimensional Finger Motion Tracking during Needling: A Solution for the Kinematic Analysis of Acupuncture Manipulation
    08:27

    Three-Dimensional Finger Motion Tracking during Needling: A Solution for the Kinematic Analysis of Acupuncture Manipulation

    Published on: October 28, 2021

    Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
    04:33

    Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

    Published on: August 21, 2018

    Area of Science:

    • Medical Robotics
    • Computational Geometry
    • Surgical Navigation

    Background:

    • Steerable needles offer enhanced access in minimally invasive procedures compared to rigid needles.
    • Current motion planning methods for steerable needles are often slow and computationally intensive.
    • Real-time planning and interactive editing are crucial for adapting to dynamic surgical environments.

    Purpose of the Study:

    • To develop a fast algorithm for computing motion plans for bevel-tip steerable needles.
    • To enable real-time motion planning for steerable needles in complex 3D environments with obstacles.
    • To facilitate interactive editing of the planning environment during procedures.

    Main Methods:

    • Utilized a Rapidly Exploring Random Tree (RRT) algorithm.
    • Incorporated a reachability-guided sampling heuristic to improve RRT performance.
    • Relaxed constant-curvature constraints by employing duty-cycling for bounded-curvature trajectories.

    Main Results:

    • Achieved motion plan computation in under 1 second for complex environments.
    • Demonstrated orders of magnitude speed-up compared to previous approaches.
    • Successfully planned paths in environments with polyhedral obstacles and narrow passages.

    Conclusions:

    • The developed algorithm enables fast, interactive motion planning for steerable needles.
    • This facilitates online control and real-time adaptation during minimally invasive procedures.
    • The method enhances the feasibility of using steerable needles for complex surgical targets.