View in EDS HTML Full Text PDF Full Text

Bend‐insensitive fiber optic ultrasonic tracking probe for cardiovascular interventions.

Saved in:
Bibliographic Details
Title: Bend‐insensitive fiber optic ultrasonic tracking probe for cardiovascular interventions.
Authors: Mathews, Sunish J.1,2 (AUTHOR) sunish.mathews@ucl.ac.uk, Little, Callum3 (AUTHOR), Zhang, Edward2 (AUTHOR), Beard, Paul1,2 (AUTHOR), Mastracci, Tara4 (AUTHOR), Rakhit, Roby4 (AUTHOR), Desjardins, Adrien E.1,2 (AUTHOR)
Source: Medical Physics. Jun2023, Vol. 50 Issue 6, p3490-3497. 8p.
Subjects: Imaging phantoms, Optical fiber detectors, Ultrasonics, Minimally invasive procedures, Fibers, Medical equipment, Transesophageal echocardiography
Abstract: Background: Transesophageal echocardiography (TEE) is widely used to guide medical device placement in minimally invasive cardiovascular procedures. However, visualization of the device tip with TEE can be challenging. Ultrasonic tracking, enabled by an integrated fiber optic ultrasound sensor (FOUS) that receives transmissions from the TEE probe, is very well suited to improving device localization in this context. The problem addressed in this study is that tight deflections of devices such as a steerable guide catheter can result in bending of the FOUS beyond its specifications and a corresponding loss of ultrasound sensitivity. Purpose: A bend‐insensitive FOUS was developed, and its utility with ultrasonic tracking of a steerable tip during TEE‐based image guidance was demonstrated. Methods: Fiberoptic ultrasound sensors were fabricated using both standard and bend insensitive single mode fibers and subjected to static bending at the distal end. The interference transfer function and ultrasound sensitivities were compared for both types of FOUS. The bend‐insensitive FOUS was integrated within a steerable guide catheter, which served as an exemplar device; the signal‐to‐noise ratio (SNR) of tracking signals from the catheter tip with a straight and a fully deflected distal end were measured in a cardiac ultrasound phantom for over 100 frames. Results: With tight bending at the distal end (bend radius < 10 mm), the standard FOUS experienced a complete loss of US sensitivity due to high attenuation in the fiber, whereas the bend‐insensitive FOUS had largely unchanged performance, with a SNR of 47.7 for straight fiber and a SNR of 36.8 at a bend radius of 3.0 mm. When integrated into the steerable guide catheter, the mean SNRs of the ultrasonic tracking signals recorded with the catheter in a cardiac phantom were similar for straight and fully deflected distal ends: 195 and 163. Conclusion: The FOUS fabricated from bend‐insensitive fiber overcomes the bend restrictions associated with the FOUS fabricated from standard single mode fiber, thereby enabling its use in ultrasonic tracking in a wide range of cardiovascular devices. [ABSTRACT FROM AUTHOR]
Copyright of Medical Physics is the property of Wiley-Blackwell 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
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 164284642
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Bend‐insensitive fiber optic ultrasonic tracking probe for cardiovascular interventions.
– Name: Author
  Label: Authors
  Group: Au
  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Mathews%2C+Sunish+J%2E%22&quot;&gt;Mathews, Sunish J.&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; sunish.mathews@ucl.ac.uk&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Little%2C+Callum%22&quot;&gt;Little, Callum&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zhang%2C+Edward%22&quot;&gt;Zhang, Edward&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Beard%2C+Paul%22&quot;&gt;Beard, Paul&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Mastracci%2C+Tara%22&quot;&gt;Mastracci, Tara&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Rakhit%2C+Roby%22&quot;&gt;Rakhit, Roby&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Desjardins%2C+Adrien+E%2E%22&quot;&gt;Desjardins, Adrien E.&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Medical+Physics%22&quot;&gt;Medical Physics&lt;/searchLink&gt;. Jun2023, Vol. 50 Issue 6, p3490-3497. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Imaging+phantoms%22&quot;&gt;Imaging phantoms&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Optical+fiber+detectors%22&quot;&gt;Optical fiber detectors&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Ultrasonics%22&quot;&gt;Ultrasonics&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Minimally+invasive+procedures%22&quot;&gt;Minimally invasive procedures&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Fibers%22&quot;&gt;Fibers&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Medical+equipment%22&quot;&gt;Medical equipment&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Transesophageal+echocardiography%22&quot;&gt;Transesophageal echocardiography&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Background: Transesophageal echocardiography (TEE) is widely used to guide medical device placement in minimally invasive cardiovascular procedures. However, visualization of the device tip with TEE can be challenging. Ultrasonic tracking, enabled by an integrated fiber optic ultrasound sensor (FOUS) that receives transmissions from the TEE probe, is very well suited to improving device localization in this context. The problem addressed in this study is that tight deflections of devices such as a steerable guide catheter can result in bending of the FOUS beyond its specifications and a corresponding loss of ultrasound sensitivity. Purpose: A bend‐insensitive FOUS was developed, and its utility with ultrasonic tracking of a steerable tip during TEE‐based image guidance was demonstrated. Methods: Fiberoptic ultrasound sensors were fabricated using both standard and bend insensitive single mode fibers and subjected to static bending at the distal end. The interference transfer function and ultrasound sensitivities were compared for both types of FOUS. The bend‐insensitive FOUS was integrated within a steerable guide catheter, which served as an exemplar device; the signal‐to‐noise ratio (SNR) of tracking signals from the catheter tip with a straight and a fully deflected distal end were measured in a cardiac ultrasound phantom for over 100 frames. Results: With tight bending at the distal end (bend radius &lt; 10 mm), the standard FOUS experienced a complete loss of US sensitivity due to high attenuation in the fiber, whereas the bend‐insensitive FOUS had largely unchanged performance, with a SNR of 47.7 for straight fiber and a SNR of 36.8 at a bend radius of 3.0 mm. When integrated into the steerable guide catheter, the mean SNRs of the ultrasonic tracking signals recorded with the catheter in a cardiac phantom were similar for straight and fully deflected distal ends: 195 and 163. Conclusion: The FOUS fabricated from bend‐insensitive fiber overcomes the bend restrictions associated with the FOUS fabricated from standard single mode fiber, thereby enabling its use in ultrasonic tracking in a wide range of cardiovascular devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Medical Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=164284642
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/mp.16334
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 3490
    Subjects:
      – SubjectFull: Imaging phantoms
        Type: general
      – SubjectFull: Optical fiber detectors
        Type: general
      – SubjectFull: Ultrasonics
        Type: general
      – SubjectFull: Minimally invasive procedures
        Type: general
      – SubjectFull: Fibers
        Type: general
      – SubjectFull: Medical equipment
        Type: general
      – SubjectFull: Transesophageal echocardiography
        Type: general
    Titles:
      – TitleFull: Bend‐insensitive fiber optic ultrasonic tracking probe for cardiovascular interventions.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Mathews, Sunish J.
      – PersonEntity:
          Name:
            NameFull: Little, Callum
      – PersonEntity:
          Name:
            NameFull: Zhang, Edward
      – PersonEntity:
          Name:
            NameFull: Beard, Paul
      – PersonEntity:
          Name:
            NameFull: Mastracci, Tara
      – PersonEntity:
          Name:
            NameFull: Rakhit, Roby
      – PersonEntity:
          Name:
            NameFull: Desjardins, Adrien E.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 06
              Text: Jun2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 00942405
          Numbering:
            – Type: volume
              Value: 50
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: Medical Physics
              Type: main
ResultId 1