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Polyacrylamide phantom for self-actuating needle–tissue interaction studies.

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Title: Polyacrylamide phantom for self-actuating needle–tissue interaction studies.
Authors: Datla, Naresh V.1, Konh, Bardia1, Koo, Joe J.Y.1, Choi, Daniel J.W.1, Yu, Yan2, Dicker, Adam P.2, Podder, Tarun K.3, Darvish, Kurosh1, Hutapea, Parsaoran1 hutapea@temple.edu
Source: Medical Engineering & Physics. Jan2014, Vol. 36 Issue 1, p140-145. 6p.
Subjects: Polyacrylamide, Imaging phantoms, Tissues, Needle biopsy, Nickel-titanium alloys, Serum albumin
Abstract: Abstract: This study presents a polyacrylamide gel as a phantom material for needle insertion studies specifically developed for self-actuating needles to enhance the precise placement of needles in prostate. Bending of these self-actuating needles within tissue is achieved by Nitinol actuators attached to the needle body; however these actuators usually involve heating that can thermally damage the tissue surrounding the needles. Therefore, to develop and access feasibility of these needles, a polyacrylamide gel has been developed that mimics the thermal damage and mechanical properties of prostate tissue. Mechanical properties of the polyacrylamide gel was controlled by varying the concentrations of acrylamide monomer and N,N-methylene-bisacrylamide (BIS) cross-linker, and thermal sensitivity was achieved by adding bovine serum albumin (BSA) protein. Two polyacrylamide gels with different concentrations were developed to mimic the elastic modulus of the tissue. The two phantoms showed different rupture toughness and different deflection of bevel-tip needle. To study the thermal damage, a Nitinol wire was embedded in the phantom and resistively heated. The measured opaque zone (0.40mm) formed around the wire was close to the estimated damage zone (0.43mm) determined using the cumulative equivalent minutes at 43°C. [Copyright &y& Elsevier]
Copyright of Medical Engineering & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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IllustrationInfo
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  Data: Polyacrylamide phantom for self-actuating needle–tissue interaction studies.
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  Data: <searchLink fieldCode="AR" term="%22Datla%2C+Naresh+V%2E%22">Datla, Naresh V.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Konh%2C+Bardia%22">Konh, Bardia</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Koo%2C+Joe+J%2EY%2E%22">Koo, Joe J.Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Choi%2C+Daniel+J%2EW%2E%22">Choi, Daniel J.W.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yu%2C+Yan%22">Yu, Yan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Dicker%2C+Adam+P%2E%22">Dicker, Adam P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Podder%2C+Tarun+K%2E%22">Podder, Tarun K.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Darvish%2C+Kurosh%22">Darvish, Kurosh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hutapea%2C+Parsaoran%22">Hutapea, Parsaoran</searchLink><relatesTo>1</relatesTo><i> hutapea@temple.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Medical+Engineering+%26+Physics%22">Medical Engineering & Physics</searchLink>. Jan2014, Vol. 36 Issue 1, p140-145. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Polyacrylamide%22">Polyacrylamide</searchLink><br /><searchLink fieldCode="DE" term="%22Imaging+phantoms%22">Imaging phantoms</searchLink><br /><searchLink fieldCode="DE" term="%22Tissues%22">Tissues</searchLink><br /><searchLink fieldCode="DE" term="%22Needle+biopsy%22">Needle biopsy</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel-titanium+alloys%22">Nickel-titanium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Serum+albumin%22">Serum albumin</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: This study presents a polyacrylamide gel as a phantom material for needle insertion studies specifically developed for self-actuating needles to enhance the precise placement of needles in prostate. Bending of these self-actuating needles within tissue is achieved by Nitinol actuators attached to the needle body; however these actuators usually involve heating that can thermally damage the tissue surrounding the needles. Therefore, to develop and access feasibility of these needles, a polyacrylamide gel has been developed that mimics the thermal damage and mechanical properties of prostate tissue. Mechanical properties of the polyacrylamide gel was controlled by varying the concentrations of acrylamide monomer and N,N-methylene-bisacrylamide (BIS) cross-linker, and thermal sensitivity was achieved by adding bovine serum albumin (BSA) protein. Two polyacrylamide gels with different concentrations were developed to mimic the elastic modulus of the tissue. The two phantoms showed different rupture toughness and different deflection of bevel-tip needle. To study the thermal damage, a Nitinol wire was embedded in the phantom and resistively heated. The measured opaque zone (0.40mm) formed around the wire was close to the estimated damage zone (0.43mm) determined using the cumulative equivalent minutes at 43°C. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Medical Engineering & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.medengphy.2013.07.004
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 140
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      – SubjectFull: Polyacrylamide
        Type: general
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      – SubjectFull: Tissues
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      – SubjectFull: Nickel-titanium alloys
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      – SubjectFull: Serum albumin
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      – TitleFull: Polyacrylamide phantom for self-actuating needle–tissue interaction studies.
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              M: 01
              Text: Jan2014
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              Y: 2014
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