View in EDS HTML Full Text PDF Full Text

AAPM Task Group Report 238: 3D C‐arms with volumetric imaging capability*.

Saved in:
Bibliographic Details
Title: AAPM Task Group Report 238: 3D C‐arms with volumetric imaging capability*.
Authors: Supanich, Mark1 (AUTHOR), Siewerdsen, Jeff2 (AUTHOR), Fahrig, Rebecca3 (AUTHOR), Farahani, Keyvan4 (AUTHOR), Gang, Grace Jianan2 (AUTHOR), Helm, Pat5 (AUTHOR), Jans, Jan6 (AUTHOR), Jones, Kyle7 (AUTHOR), Koenig, Thomas8 (AUTHOR), Kuhls‐Gilcrist, Andrew9 (AUTHOR), Lin, MingDe10 (AUTHOR), Riddell, Cyril11 (AUTHOR), Ritschl, Ludwig3 (AUTHOR), Schafer, Sebastian3 (AUTHOR), Schueler, Beth12 (AUTHOR), Silver, Mike9 (AUTHOR), Timmer, Jan6 (AUTHOR), Trousset, Yves11 (AUTHOR), Zhang, Jie13 (AUTHOR)
Source: Medical Physics. Aug2023, Vol. 50 Issue 8, pe904-e945. 42p.
Subjects: Cone beam computed tomography, Image-guided radiation therapy, Three-dimensional imaging, Computed tomography, Image reconstruction, Imaging systems
Abstract: This report reviews the image acquisition and reconstruction characteristics of C‐arm Cone Beam Computed Tomography (C‐arm CBCT) systems and provides guidance on quality control of C‐arm systems with this volumetric imaging capability. The concepts of 3D image reconstruction, geometric calibration, image quality, and dosimetry covered in this report are also pertinent to CBCT for Image‐Guided Radiation Therapy (IGRT). However, IGRT systems introduce a number of additional considerations, such as geometric alignment of the imaging at treatment isocenter, which are beyond the scope of the charge to the task group and the report. Section 1 provides an introduction to C‐arm CBCT systems and reviews a variety of clinical applications. Section 2 briefly presents nomenclature specific or unique to these systems. A short review of C‐arm fluoroscopy quality control (QC) in relation to 3D C‐arm imaging is given in Section 3. Section 4 discusses system calibration, including geometric calibration and uniformity calibration. A review of the unique approaches and challenges to 3D reconstruction of data sets acquired by C‐arm CBCT systems is give in Section 5. Sections 6 and 7 go in greater depth to address the performance assessment of C‐arm CBCT units. First, Section 6 describes testing approaches and phantoms that may be used to evaluate image quality (spatial resolution and image noise and artifacts) and identifies several factors that affect image quality. Section 7 describes both free‐in‐air and in‐phantom approaches to evaluating radiation dose indices. The methodologies described for assessing image quality and radiation dose may be used for annual constancy assessment and comparisons among different systems to help medical physicists determine when a system is not operating as expected. Baseline measurements taken either at installation or after a full preventative maintenance service call can also provide valuable data to help determine whether the performance of the system is acceptable. Collecting image quality and radiation dose data on existing phantoms used for CT image quality and radiation dose assessment, or on newly developed phantoms, will inform the development of performance criteria and standards. Phantom images are also useful for identifying and evaluating artifacts. In particular, comparing baseline data with those from current phantom images can reveal the need for system calibration before image artifacts are detected in clinical practice. Examples of artifacts are provided in Sections 4, 5, and 6. [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: 169915300
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: AAPM Task Group Report 238: 3D C‐arms with volumetric imaging capability*.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Supanich%2C+Mark%22">Supanich, Mark</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Siewerdsen%2C+Jeff%22">Siewerdsen, Jeff</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fahrig%2C+Rebecca%22">Fahrig, Rebecca</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Farahani%2C+Keyvan%22">Farahani, Keyvan</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gang%2C+Grace+Jianan%22">Gang, Grace Jianan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Helm%2C+Pat%22">Helm, Pat</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jans%2C+Jan%22">Jans, Jan</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jones%2C+Kyle%22">Jones, Kyle</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Koenig%2C+Thomas%22">Koenig, Thomas</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuhls‐Gilcrist%2C+Andrew%22">Kuhls‐Gilcrist, Andrew</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+MingDe%22">Lin, MingDe</searchLink><relatesTo>10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Riddell%2C+Cyril%22">Riddell, Cyril</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ritschl%2C+Ludwig%22">Ritschl, Ludwig</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schafer%2C+Sebastian%22">Schafer, Sebastian</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schueler%2C+Beth%22">Schueler, Beth</searchLink><relatesTo>12</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Silver%2C+Mike%22">Silver, Mike</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Timmer%2C+Jan%22">Timmer, Jan</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Trousset%2C+Yves%22">Trousset, Yves</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jie%22">Zhang, Jie</searchLink><relatesTo>13</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Medical+Physics%22">Medical Physics</searchLink>. Aug2023, Vol. 50 Issue 8, pe904-e945. 42p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Cone+beam+computed+tomography%22">Cone beam computed tomography</searchLink><br /><searchLink fieldCode="DE" term="%22Image-guided+radiation+therapy%22">Image-guided radiation therapy</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+imaging%22">Three-dimensional imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Computed+tomography%22">Computed tomography</searchLink><br /><searchLink fieldCode="DE" term="%22Image+reconstruction%22">Image reconstruction</searchLink><br /><searchLink fieldCode="DE" term="%22Imaging+systems%22">Imaging systems</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This report reviews the image acquisition and reconstruction characteristics of C‐arm Cone Beam Computed Tomography (C‐arm CBCT) systems and provides guidance on quality control of C‐arm systems with this volumetric imaging capability. The concepts of 3D image reconstruction, geometric calibration, image quality, and dosimetry covered in this report are also pertinent to CBCT for Image‐Guided Radiation Therapy (IGRT). However, IGRT systems introduce a number of additional considerations, such as geometric alignment of the imaging at treatment isocenter, which are beyond the scope of the charge to the task group and the report. Section 1 provides an introduction to C‐arm CBCT systems and reviews a variety of clinical applications. Section 2 briefly presents nomenclature specific or unique to these systems. A short review of C‐arm fluoroscopy quality control (QC) in relation to 3D C‐arm imaging is given in Section 3. Section 4 discusses system calibration, including geometric calibration and uniformity calibration. A review of the unique approaches and challenges to 3D reconstruction of data sets acquired by C‐arm CBCT systems is give in Section 5. Sections 6 and 7 go in greater depth to address the performance assessment of C‐arm CBCT units. First, Section 6 describes testing approaches and phantoms that may be used to evaluate image quality (spatial resolution and image noise and artifacts) and identifies several factors that affect image quality. Section 7 describes both free‐in‐air and in‐phantom approaches to evaluating radiation dose indices. The methodologies described for assessing image quality and radiation dose may be used for annual constancy assessment and comparisons among different systems to help medical physicists determine when a system is not operating as expected. Baseline measurements taken either at installation or after a full preventative maintenance service call can also provide valuable data to help determine whether the performance of the system is acceptable. Collecting image quality and radiation dose data on existing phantoms used for CT image quality and radiation dose assessment, or on newly developed phantoms, will inform the development of performance criteria and standards. Phantom images are also useful for identifying and evaluating artifacts. In particular, comparing baseline data with those from current phantom images can reveal the need for system calibration before image artifacts are detected in clinical practice. Examples of artifacts are provided in Sections 4, 5, and 6. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>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.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=169915300
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/mp.16245
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 42
        StartPage: e904
    Subjects:
      – SubjectFull: Cone beam computed tomography
        Type: general
      – SubjectFull: Image-guided radiation therapy
        Type: general
      – SubjectFull: Three-dimensional imaging
        Type: general
      – SubjectFull: Computed tomography
        Type: general
      – SubjectFull: Image reconstruction
        Type: general
      – SubjectFull: Imaging systems
        Type: general
    Titles:
      – TitleFull: AAPM Task Group Report 238: 3D C‐arms with volumetric imaging capability*.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Supanich, Mark
      – PersonEntity:
          Name:
            NameFull: Siewerdsen, Jeff
      – PersonEntity:
          Name:
            NameFull: Fahrig, Rebecca
      – PersonEntity:
          Name:
            NameFull: Farahani, Keyvan
      – PersonEntity:
          Name:
            NameFull: Gang, Grace Jianan
      – PersonEntity:
          Name:
            NameFull: Helm, Pat
      – PersonEntity:
          Name:
            NameFull: Jans, Jan
      – PersonEntity:
          Name:
            NameFull: Jones, Kyle
      – PersonEntity:
          Name:
            NameFull: Koenig, Thomas
      – PersonEntity:
          Name:
            NameFull: Kuhls‐Gilcrist, Andrew
      – PersonEntity:
          Name:
            NameFull: Lin, MingDe
      – PersonEntity:
          Name:
            NameFull: Riddell, Cyril
      – PersonEntity:
          Name:
            NameFull: Ritschl, Ludwig
      – PersonEntity:
          Name:
            NameFull: Schafer, Sebastian
      – PersonEntity:
          Name:
            NameFull: Schueler, Beth
      – PersonEntity:
          Name:
            NameFull: Silver, Mike
      – PersonEntity:
          Name:
            NameFull: Timmer, Jan
      – PersonEntity:
          Name:
            NameFull: Trousset, Yves
      – PersonEntity:
          Name:
            NameFull: Zhang, Jie
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 08
              Text: Aug2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 00942405
          Numbering:
            – Type: volume
              Value: 50
            – Type: issue
              Value: 8
          Titles:
            – TitleFull: Medical Physics
              Type: main
ResultId 1