Inversion-recovery-prepared dixon bSSFP: Initial clinical experience with a novel pulse sequence for renal MRA within a breathhold

Pauline W. Worters, Manojkumar Saranathan, Alan Xu, Shreyas S. Vasanawala

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: To evaluate the capability of a new breathhold non-contrast-enhanced MRA method (Non-contrast Outer Radial Inner Square k-space Scheme, NORISKS) to visualize renal arteries by comparing the method with a routine clinical but significantly longer non-contrast-enhanced (non-CE) MRA technique. Materials and Methods: Eighteen subjects referred for abdominal MRI were examined with NORISKS and a routine non-contrast-enhanced MRA technique. Two versions of NORISKS were evaluated: with and without ECG gating. The images were then scored independently and in blinded manner by two radiologists on 5-point scales for visualization of the proximal and distal renal arteries and quality of fat suppression. Results: No statistically significant difference was detected between NORISKS and routine clinical non-CE MRA in all categories except for visualization of the distal renal arteries where ungated NORISKS performed poorer than the routine non-CE MRA (P < 10 -4). Conclusion: We have demonstrated a promising non-CE MRA method for acquiring renal angiograms within a breathhold without any compromise in spatial resolution or coverage. ECG-gated NORISKS is able to acquire renal angiograms that are comparable to a routine clinical non-CE MRA method (Inhance IFIR, GE Healthcare), which requires approximately seven times the scan time of NORISKS.

Original languageEnglish (US)
Pages (from-to)875-881
Number of pages7
JournalJournal of Magnetic Resonance Imaging
Issue number4
StatePublished - Apr 2012
Externally publishedYes


  • Dixon
  • MR angiography
  • balanced SSFP
  • breathhold
  • non-contrast-enhanced
  • renal

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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