Internal densitometric gating for digital subtraction angiography

J Anthony Seibert, B. M T Lantz, J. Brock

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Motion artifacts create a severe problem in digital subtraction angiography (DSA) studies. Periodic motion can be eliminated by 'gating,' matching a precontrast mask with a postcontrast image at the same phase position in the cycle. Electrocardiogram (EKG) signals are used in cardiac DSA for this purpose. An alternate method relies on the generation of a density-time curve dependent on the attenuation changes of anatomical motion. A densitometric window placed at an appropriate location records the variation, from which individual images are tagged with phase position information encoded as delay time. Results are similar to the EKG gating method for cardiac DSA when using an appropriate window location. Periodic motion caused by superimposed respiration can be suppressed by tracking diaphragm or other object attenuation changes with the same algorithms. Using these techniques permits the nonarbitrary matching of mask and contrast images without physiologic monitoring. The techniques are straightforward and relatively easy to implement on systems designed for rapid digital imaging.

Original languageEnglish (US)
Pages (from-to)350-360
Number of pages11
JournalInvestigative Radiology
Volume24
Issue number5
StatePublished - 1989

Fingerprint

Digital Subtraction Angiography
Electrocardiography
Masks
Physiologic Monitoring
Diaphragm
Artifacts
Respiration

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Internal densitometric gating for digital subtraction angiography. / Seibert, J Anthony; Lantz, B. M T; Brock, J.

In: Investigative Radiology, Vol. 24, No. 5, 1989, p. 350-360.

Research output: Contribution to journalArticle

Seibert, J Anthony ; Lantz, B. M T ; Brock, J. / Internal densitometric gating for digital subtraction angiography. In: Investigative Radiology. 1989 ; Vol. 24, No. 5. pp. 350-360.
@article{7d0122135e264d99b425023111fa2ccc,
title = "Internal densitometric gating for digital subtraction angiography",
abstract = "Motion artifacts create a severe problem in digital subtraction angiography (DSA) studies. Periodic motion can be eliminated by 'gating,' matching a precontrast mask with a postcontrast image at the same phase position in the cycle. Electrocardiogram (EKG) signals are used in cardiac DSA for this purpose. An alternate method relies on the generation of a density-time curve dependent on the attenuation changes of anatomical motion. A densitometric window placed at an appropriate location records the variation, from which individual images are tagged with phase position information encoded as delay time. Results are similar to the EKG gating method for cardiac DSA when using an appropriate window location. Periodic motion caused by superimposed respiration can be suppressed by tracking diaphragm or other object attenuation changes with the same algorithms. Using these techniques permits the nonarbitrary matching of mask and contrast images without physiologic monitoring. The techniques are straightforward and relatively easy to implement on systems designed for rapid digital imaging.",
author = "Seibert, {J Anthony} and Lantz, {B. M T} and J. Brock",
year = "1989",
language = "English (US)",
volume = "24",
pages = "350--360",
journal = "Investigative Radiology",
issn = "0020-9996",
publisher = "Lippincott Williams and Wilkins",
number = "5",

}

TY - JOUR

T1 - Internal densitometric gating for digital subtraction angiography

AU - Seibert, J Anthony

AU - Lantz, B. M T

AU - Brock, J.

PY - 1989

Y1 - 1989

N2 - Motion artifacts create a severe problem in digital subtraction angiography (DSA) studies. Periodic motion can be eliminated by 'gating,' matching a precontrast mask with a postcontrast image at the same phase position in the cycle. Electrocardiogram (EKG) signals are used in cardiac DSA for this purpose. An alternate method relies on the generation of a density-time curve dependent on the attenuation changes of anatomical motion. A densitometric window placed at an appropriate location records the variation, from which individual images are tagged with phase position information encoded as delay time. Results are similar to the EKG gating method for cardiac DSA when using an appropriate window location. Periodic motion caused by superimposed respiration can be suppressed by tracking diaphragm or other object attenuation changes with the same algorithms. Using these techniques permits the nonarbitrary matching of mask and contrast images without physiologic monitoring. The techniques are straightforward and relatively easy to implement on systems designed for rapid digital imaging.

AB - Motion artifacts create a severe problem in digital subtraction angiography (DSA) studies. Periodic motion can be eliminated by 'gating,' matching a precontrast mask with a postcontrast image at the same phase position in the cycle. Electrocardiogram (EKG) signals are used in cardiac DSA for this purpose. An alternate method relies on the generation of a density-time curve dependent on the attenuation changes of anatomical motion. A densitometric window placed at an appropriate location records the variation, from which individual images are tagged with phase position information encoded as delay time. Results are similar to the EKG gating method for cardiac DSA when using an appropriate window location. Periodic motion caused by superimposed respiration can be suppressed by tracking diaphragm or other object attenuation changes with the same algorithms. Using these techniques permits the nonarbitrary matching of mask and contrast images without physiologic monitoring. The techniques are straightforward and relatively easy to implement on systems designed for rapid digital imaging.

UR - http://www.scopus.com/inward/record.url?scp=0024382423&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024382423&partnerID=8YFLogxK

M3 - Article

C2 - 2663764

AN - SCOPUS:0024382423

VL - 24

SP - 350

EP - 360

JO - Investigative Radiology

JF - Investigative Radiology

SN - 0020-9996

IS - 5

ER -