Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner

Tariq Hameed, Shawn D. Teague, Mani Vembar, Ekta Dharaiya, Jonas Rydberg

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Computed tomography angiography (CTA) of the thorax other than cardiac CTA, is utilized for a multitude of conditions and ranges in application from a diagnostic test, to presurgical planning and postsurgical follow-up. Helical CTA without electrocardiogram (ECG) gating has been routinely utilized for the evaluation of thoracic vasculature. However, its applicability can be limited in the evaluation of the thoracic aorta and pulmonary vasculature because of the artifacts resulting from cardiac motion. Traditional retrospective ECG-gated helical scans address this issue but at the price of a high radiation dose to the patient. In this paper we review CTA dose reduction strategies for non-coronary indications, examine field of view requirements, and discuss breath hold challenges for ECG-gated acquisitions. In addition, we present clinical examples performed using low-dose prospective gating technique for evaluation of the aorta acquired on a 256-slice multidetector computed tomography system.

Original languageEnglish
Pages (from-to)267-278
Number of pages12
JournalInternational Journal of Cardiovascular Imaging
Volume25
Issue numberSUPPL. 2
DOIs
StatePublished - 2009

Fingerprint

Electrocardiography
Thorax
Radiation
Multidetector Computed Tomography
Spiral Computed Tomography
Thoracic Aorta
Routine Diagnostic Tests
Artifacts
Aorta
Lung
Computed Tomography Angiography

Keywords

  • 256-slice MDCT
  • Aorta
  • Chest
  • Computed tomography
  • CTangiography
  • ECG-gated imaging
  • Prospectively gated axial CT imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Cite this

Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner. / Hameed, Tariq; Teague, Shawn D.; Vembar, Mani; Dharaiya, Ekta; Rydberg, Jonas.

In: International Journal of Cardiovascular Imaging, Vol. 25, No. SUPPL. 2, 2009, p. 267-278.

Research output: Contribution to journalArticle

Hameed, Tariq ; Teague, Shawn D. ; Vembar, Mani ; Dharaiya, Ekta ; Rydberg, Jonas. / Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner. In: International Journal of Cardiovascular Imaging. 2009 ; Vol. 25, No. SUPPL. 2. pp. 267-278.
@article{e54693f155484ba39616059fd375189d,
title = "Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner",
abstract = "Computed tomography angiography (CTA) of the thorax other than cardiac CTA, is utilized for a multitude of conditions and ranges in application from a diagnostic test, to presurgical planning and postsurgical follow-up. Helical CTA without electrocardiogram (ECG) gating has been routinely utilized for the evaluation of thoracic vasculature. However, its applicability can be limited in the evaluation of the thoracic aorta and pulmonary vasculature because of the artifacts resulting from cardiac motion. Traditional retrospective ECG-gated helical scans address this issue but at the price of a high radiation dose to the patient. In this paper we review CTA dose reduction strategies for non-coronary indications, examine field of view requirements, and discuss breath hold challenges for ECG-gated acquisitions. In addition, we present clinical examples performed using low-dose prospective gating technique for evaluation of the aorta acquired on a 256-slice multidetector computed tomography system.",
keywords = "256-slice MDCT, Aorta, Chest, Computed tomography, CTangiography, ECG-gated imaging, Prospectively gated axial CT imaging",
author = "Tariq Hameed and Teague, {Shawn D.} and Mani Vembar and Ekta Dharaiya and Jonas Rydberg",
year = "2009",
doi = "10.1007/s10554-009-9428-3",
language = "English",
volume = "25",
pages = "267--278",
journal = "International Journal of Cardiac Imaging",
issn = "0167-9899",
publisher = "Springer Netherlands",
number = "SUPPL. 2",

}

TY - JOUR

T1 - Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner

AU - Hameed, Tariq

AU - Teague, Shawn D.

AU - Vembar, Mani

AU - Dharaiya, Ekta

AU - Rydberg, Jonas

PY - 2009

Y1 - 2009

N2 - Computed tomography angiography (CTA) of the thorax other than cardiac CTA, is utilized for a multitude of conditions and ranges in application from a diagnostic test, to presurgical planning and postsurgical follow-up. Helical CTA without electrocardiogram (ECG) gating has been routinely utilized for the evaluation of thoracic vasculature. However, its applicability can be limited in the evaluation of the thoracic aorta and pulmonary vasculature because of the artifacts resulting from cardiac motion. Traditional retrospective ECG-gated helical scans address this issue but at the price of a high radiation dose to the patient. In this paper we review CTA dose reduction strategies for non-coronary indications, examine field of view requirements, and discuss breath hold challenges for ECG-gated acquisitions. In addition, we present clinical examples performed using low-dose prospective gating technique for evaluation of the aorta acquired on a 256-slice multidetector computed tomography system.

AB - Computed tomography angiography (CTA) of the thorax other than cardiac CTA, is utilized for a multitude of conditions and ranges in application from a diagnostic test, to presurgical planning and postsurgical follow-up. Helical CTA without electrocardiogram (ECG) gating has been routinely utilized for the evaluation of thoracic vasculature. However, its applicability can be limited in the evaluation of the thoracic aorta and pulmonary vasculature because of the artifacts resulting from cardiac motion. Traditional retrospective ECG-gated helical scans address this issue but at the price of a high radiation dose to the patient. In this paper we review CTA dose reduction strategies for non-coronary indications, examine field of view requirements, and discuss breath hold challenges for ECG-gated acquisitions. In addition, we present clinical examples performed using low-dose prospective gating technique for evaluation of the aorta acquired on a 256-slice multidetector computed tomography system.

KW - 256-slice MDCT

KW - Aorta

KW - Chest

KW - Computed tomography

KW - CTangiography

KW - ECG-gated imaging

KW - Prospectively gated axial CT imaging

UR - http://www.scopus.com/inward/record.url?scp=67849083236&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67849083236&partnerID=8YFLogxK

U2 - 10.1007/s10554-009-9428-3

DO - 10.1007/s10554-009-9428-3

M3 - Article

AN - SCOPUS:67849083236

VL - 25

SP - 267

EP - 278

JO - International Journal of Cardiac Imaging

JF - International Journal of Cardiac Imaging

SN - 0167-9899

IS - SUPPL. 2

ER -