Pediatric Radiology

, Volume 40, Issue 3, pp 340–344 | Cite as

Navigated abdominal T1-W MRI permits free-breathing image acquisition with less motion artifact

  • Shreyas S. VasanawalaEmail author
  • Yuji Iwadate
  • Daniel G. Church
  • Robert J. Herfkens
  • Anja C. Brau
Technical Innovation


T1-W imaging of the pediatric abdomen is often limited by respiratory motion artifacts. Although navigation has been commonly employed for coronary MRA and T2-W imaging, navigation for T1-W imaging is less developed. Thus, we incorporated a navigator pulse into a fat-suppressed T1-W SPGR sequence such that steady-state contrast was not disrupted. Ten children were scanned after gadolinium administration three times in immediate succession: breath-hold with no navigation, free-breathing with navigation, and free-breathing without navigation. Motion artifacts were scored for each sequence by two radiologists, showing fewer motion artifacts with navigation compared to free-breathing and greater motion artifacts than with breath-holding. This work demonstrates the feasibility and potential utility of navigation for pediatric abdominal T1-W imaging.


MRI Navigation Motion artifacts T1-weighted imaging Children 


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Shreyas S. Vasanawala
    • 1
    • 5
    Email author
  • Yuji Iwadate
    • 2
  • Daniel G. Church
    • 1
  • Robert J. Herfkens
    • 3
  • Anja C. Brau
    • 4
  1. 1.Department of Radiology, Lucile Packard Children’s HospitalStanford UniversityStanfordUSA
  2. 2.Applied Science LabGE HealthcareHinoJapan
  3. 3.Department of Radiology, Stanford University Hospital & ClinicsStanford UniversityStanfordUSA
  4. 4.Applied Science LabGE HealthcareMenlo ParkUSA
  5. 5.Stanford University School of MedicineLucile Packard Children’s HospitalStanfordUSA

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