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In prostate brachytherapy, multiple seeds are implanted during each needle insertion, and the locations of these seeds are dependent on the track of the needle shaft inside the tissue. Therefore, the track of needle shaft is as important as the placement of the needle tip on the outcome of this procedure and the effectiveness of therapy. In this study, the needle is rotated at particular locations...
Needle steering in medical procedures has attracted considerable attention in recent years. For example, in prostate brachytherapy, it is desired to insert a flexible beveled-tip needle with minimum deflection. To date, different methods of insertion which incorporate needle rotation about its insertion axis have been proposed in order to reduce needle deflection and target displacement. In this paper,...
In this study, impedances of SABA BATTERY 6SB6 in different SOCs are applied to obtain the equivalent circuit parameters using Champlin method in different SOCs. Champlin method answers are used as Zview initial values to get fit results and the Artificial Neural Network (ANN) is trained by these final results. The presented ANN inputs are SOCs and outputs are equivalent circuit parameters. The completed...
Accurate needle insertion into soft, inhomogeneous tissue is of practical interest because of its importance in percutaneous diagnosis and therapies. The needles used in such procedures are usually long flexible needles with bevel tips that can deflect during insertion. Deflection of the needle can not only cause misplacement of the needle tip at the target but can also cause the needle to deviate...
Accurate needle insertion in soft, inhomogeneous tissue has been a major concern in several recent studies involving robot-assisted percutaneous therapies. In procedures that involve multiple needle insertions such as transrectal ultrasound guided prostate brachytherapy, it is important to reduce tissue deformation before puncture and during insertion. In order to reduce this deformation, we have...
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