Dual-source computed tomographic temporal resolution provides higher image quality than 64-detector temporal resolution at low heart rates

Philip A Araoz, Jacobo Kirsch, Andrew N. Primak, Natalie N. Braun, Osama Saba, Eric E. Williamson, W. Scott Harmsen, Jayawant Mandrekar, Cynthia H McCollough

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective: To compare coronary image quality at temporal resolutions associated with dual-source computed tomography (DSCT; 83 milliseconds) and 64-detector row scanning (165 milliseconds). Methods: In 30 patients with a heart rate of less than 70 beats per minute, DSCT coronary angiograms were reconstructed at 83- and 165-millisecond temporal resolutions over different cardiac phases. A blinded observer graded coronary quality. Results: The typical DSCT temporal resolution (83 milliseconds) showed a significantly greater quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. For all vessels, the end-diastole produced the highest quality for both temporal resolutions. Conclusions: Imaging at 83 milliseconds creates superior quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. At low heart rates, end-diastole produces the highest quality at both temporal resolutions.

Original languageEnglish (US)
Pages (from-to)64-69
Number of pages6
JournalJournal of Computer Assisted Tomography
Volume34
Issue number1
DOIs
StatePublished - Jan 2010

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Diastole
Heart Rate
Coronary Vessels
Systole
Angiography
Tomography

Keywords

  • Coronary
  • CT
  • DSCT
  • Quality
  • Temporal resolution

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Dual-source computed tomographic temporal resolution provides higher image quality than 64-detector temporal resolution at low heart rates. / Araoz, Philip A; Kirsch, Jacobo; Primak, Andrew N.; Braun, Natalie N.; Saba, Osama; Williamson, Eric E.; Harmsen, W. Scott; Mandrekar, Jayawant; McCollough, Cynthia H.

In: Journal of Computer Assisted Tomography, Vol. 34, No. 1, 01.2010, p. 64-69.

Research output: Contribution to journalArticle

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AU - Kirsch, Jacobo

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AU - Saba, Osama

AU - Williamson, Eric E.

AU - Harmsen, W. Scott

AU - Mandrekar, Jayawant

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N2 - Objective: To compare coronary image quality at temporal resolutions associated with dual-source computed tomography (DSCT; 83 milliseconds) and 64-detector row scanning (165 milliseconds). Methods: In 30 patients with a heart rate of less than 70 beats per minute, DSCT coronary angiograms were reconstructed at 83- and 165-millisecond temporal resolutions over different cardiac phases. A blinded observer graded coronary quality. Results: The typical DSCT temporal resolution (83 milliseconds) showed a significantly greater quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. For all vessels, the end-diastole produced the highest quality for both temporal resolutions. Conclusions: Imaging at 83 milliseconds creates superior quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. At low heart rates, end-diastole produces the highest quality at both temporal resolutions.

AB - Objective: To compare coronary image quality at temporal resolutions associated with dual-source computed tomography (DSCT; 83 milliseconds) and 64-detector row scanning (165 milliseconds). Methods: In 30 patients with a heart rate of less than 70 beats per minute, DSCT coronary angiograms were reconstructed at 83- and 165-millisecond temporal resolutions over different cardiac phases. A blinded observer graded coronary quality. Results: The typical DSCT temporal resolution (83 milliseconds) showed a significantly greater quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. For all vessels, the end-diastole produced the highest quality for both temporal resolutions. Conclusions: Imaging at 83 milliseconds creates superior quality at end-systole for all coronary vessels and at end-diastole for the right coronary and left anterior descending coronary arteries. At low heart rates, end-diastole produces the highest quality at both temporal resolutions.

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