High-resolution magnetic resonance angiography of the renal arteries using parallel imaging acquisition techniques at 3.0 T: Initial experience

Ulrich Kramer, Kambiz Nael, Gerhard Laub, Glen K. Nyborg, Michael Fenchel, Stephan Miller, Claus D. Claussen, J. Paul Finn

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

OBJECTIVE: The purpose of this prospective study was to investigate the feasibility of high-resolution magnetic resonance angiography (MRA) of the kidneys at 3.0 T using parallel data acquisition. MATERIAL AND METHODS: Contrast-enhanced MRA of the renal arteries (RA) was performed in 12 volunteers and 12 consecutive patients (mean age 47.1 ± 16.3 years) on a 3.0 T MR scanner. For CEMRA, a high-resolution 3-dimensional GRE FLASH sequence was implemented. Images were assessed subjectively on a 0 to 5 scoring scale by 2 reviewers. Quantitative evaluation was done by measuring the contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR). RESULTS: Diagnostic image quality was acquired in all individuals. In total, 62 RA were found, consisting of 48 main and 14 accessory RA. Overall visibility score for main RA was 4.82 ± 0.38. RA were identified up to the third-order branches in 88%. In 3 of 12 patients, a hemodynamic relevant stenosis was found and proven by conventional angiogram. CONCLUSION: CEMRA at 3.0 T is advantageous in terms of better SNR and T1 weighting; therefore, measurement time can be reduced and spatial resolution can be increased without corruption of signal yield. Consequently, high-field MRA may be preferred for the evaluation of renal vascular anatomy in potential kidney donors or for the detection of renal artery stenosis.

Original languageEnglish (US)
Pages (from-to)125-132
Number of pages8
JournalInvestigative Radiology
Volume41
Issue number2
DOIs
StatePublished - Feb 2006
Externally publishedYes

Fingerprint

Magnetic Resonance Angiography
Renal Artery
Signal-To-Noise Ratio
Kidney
Renal Artery Obstruction
Blood Vessels
Noise
Volunteers
Anatomy
Angiography
Pathologic Constriction
Hemodynamics
Tissue Donors
Prospective Studies

Keywords

  • High field strength imaging
  • MR
  • MR angiography
  • Parallel imaging techniques
  • Renal arteries

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

High-resolution magnetic resonance angiography of the renal arteries using parallel imaging acquisition techniques at 3.0 T : Initial experience. / Kramer, Ulrich; Nael, Kambiz; Laub, Gerhard; Nyborg, Glen K.; Fenchel, Michael; Miller, Stephan; Claussen, Claus D.; Finn, J. Paul.

In: Investigative Radiology, Vol. 41, No. 2, 02.2006, p. 125-132.

Research output: Contribution to journalArticle

Kramer, Ulrich ; Nael, Kambiz ; Laub, Gerhard ; Nyborg, Glen K. ; Fenchel, Michael ; Miller, Stephan ; Claussen, Claus D. ; Finn, J. Paul. / High-resolution magnetic resonance angiography of the renal arteries using parallel imaging acquisition techniques at 3.0 T : Initial experience. In: Investigative Radiology. 2006 ; Vol. 41, No. 2. pp. 125-132.
@article{003ca0da4f6a4a8e9b2532d0cf5e8b27,
title = "High-resolution magnetic resonance angiography of the renal arteries using parallel imaging acquisition techniques at 3.0 T: Initial experience",
abstract = "OBJECTIVE: The purpose of this prospective study was to investigate the feasibility of high-resolution magnetic resonance angiography (MRA) of the kidneys at 3.0 T using parallel data acquisition. MATERIAL AND METHODS: Contrast-enhanced MRA of the renal arteries (RA) was performed in 12 volunteers and 12 consecutive patients (mean age 47.1 ± 16.3 years) on a 3.0 T MR scanner. For CEMRA, a high-resolution 3-dimensional GRE FLASH sequence was implemented. Images were assessed subjectively on a 0 to 5 scoring scale by 2 reviewers. Quantitative evaluation was done by measuring the contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR). RESULTS: Diagnostic image quality was acquired in all individuals. In total, 62 RA were found, consisting of 48 main and 14 accessory RA. Overall visibility score for main RA was 4.82 ± 0.38. RA were identified up to the third-order branches in 88{\%}. In 3 of 12 patients, a hemodynamic relevant stenosis was found and proven by conventional angiogram. CONCLUSION: CEMRA at 3.0 T is advantageous in terms of better SNR and T1 weighting; therefore, measurement time can be reduced and spatial resolution can be increased without corruption of signal yield. Consequently, high-field MRA may be preferred for the evaluation of renal vascular anatomy in potential kidney donors or for the detection of renal artery stenosis.",
keywords = "High field strength imaging, MR, MR angiography, Parallel imaging techniques, Renal arteries",
author = "Ulrich Kramer and Kambiz Nael and Gerhard Laub and Nyborg, {Glen K.} and Michael Fenchel and Stephan Miller and Claussen, {Claus D.} and Finn, {J. Paul}",
year = "2006",
month = "2",
doi = "10.1097/01.rli.0000195838.94440.20",
language = "English (US)",
volume = "41",
pages = "125--132",
journal = "Investigative Radiology",
issn = "0020-9996",
publisher = "Lippincott Williams and Wilkins",
number = "2",

}

TY - JOUR

T1 - High-resolution magnetic resonance angiography of the renal arteries using parallel imaging acquisition techniques at 3.0 T

T2 - Initial experience

AU - Kramer, Ulrich

AU - Nael, Kambiz

AU - Laub, Gerhard

AU - Nyborg, Glen K.

AU - Fenchel, Michael

AU - Miller, Stephan

AU - Claussen, Claus D.

AU - Finn, J. Paul

PY - 2006/2

Y1 - 2006/2

N2 - OBJECTIVE: The purpose of this prospective study was to investigate the feasibility of high-resolution magnetic resonance angiography (MRA) of the kidneys at 3.0 T using parallel data acquisition. MATERIAL AND METHODS: Contrast-enhanced MRA of the renal arteries (RA) was performed in 12 volunteers and 12 consecutive patients (mean age 47.1 ± 16.3 years) on a 3.0 T MR scanner. For CEMRA, a high-resolution 3-dimensional GRE FLASH sequence was implemented. Images were assessed subjectively on a 0 to 5 scoring scale by 2 reviewers. Quantitative evaluation was done by measuring the contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR). RESULTS: Diagnostic image quality was acquired in all individuals. In total, 62 RA were found, consisting of 48 main and 14 accessory RA. Overall visibility score for main RA was 4.82 ± 0.38. RA were identified up to the third-order branches in 88%. In 3 of 12 patients, a hemodynamic relevant stenosis was found and proven by conventional angiogram. CONCLUSION: CEMRA at 3.0 T is advantageous in terms of better SNR and T1 weighting; therefore, measurement time can be reduced and spatial resolution can be increased without corruption of signal yield. Consequently, high-field MRA may be preferred for the evaluation of renal vascular anatomy in potential kidney donors or for the detection of renal artery stenosis.

AB - OBJECTIVE: The purpose of this prospective study was to investigate the feasibility of high-resolution magnetic resonance angiography (MRA) of the kidneys at 3.0 T using parallel data acquisition. MATERIAL AND METHODS: Contrast-enhanced MRA of the renal arteries (RA) was performed in 12 volunteers and 12 consecutive patients (mean age 47.1 ± 16.3 years) on a 3.0 T MR scanner. For CEMRA, a high-resolution 3-dimensional GRE FLASH sequence was implemented. Images were assessed subjectively on a 0 to 5 scoring scale by 2 reviewers. Quantitative evaluation was done by measuring the contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR). RESULTS: Diagnostic image quality was acquired in all individuals. In total, 62 RA were found, consisting of 48 main and 14 accessory RA. Overall visibility score for main RA was 4.82 ± 0.38. RA were identified up to the third-order branches in 88%. In 3 of 12 patients, a hemodynamic relevant stenosis was found and proven by conventional angiogram. CONCLUSION: CEMRA at 3.0 T is advantageous in terms of better SNR and T1 weighting; therefore, measurement time can be reduced and spatial resolution can be increased without corruption of signal yield. Consequently, high-field MRA may be preferred for the evaluation of renal vascular anatomy in potential kidney donors or for the detection of renal artery stenosis.

KW - High field strength imaging

KW - MR

KW - MR angiography

KW - Parallel imaging techniques

KW - Renal arteries

UR - http://www.scopus.com/inward/record.url?scp=33646373940&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646373940&partnerID=8YFLogxK

U2 - 10.1097/01.rli.0000195838.94440.20

DO - 10.1097/01.rli.0000195838.94440.20

M3 - Article

C2 - 16428983

AN - SCOPUS:33646373940

VL - 41

SP - 125

EP - 132

JO - Investigative Radiology

JF - Investigative Radiology

SN - 0020-9996

IS - 2

ER -