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Noncontrast-enhanced three-dimensional magnetic resonance aortography of the thorax at 3.0 T using respiratory-compensated T1-weighted k-space segmented gradient-echo imaging with radial data sampling: preliminary study.
Invest Radiol. 2009 Sep; 44(9):548-52.IR

Abstract

OBJECTIVE

To evaluate the feasibility of a respiratory-compensated three-dimensional (3D) T1-weighted k-space segmented gradient-echo imaging sequence with radial data sampling for noncontrast-enhanced 3D magnetic resonance (MR) aortography of the thorax at 3.0 T.

MATERIALS AND METHODS

Twenty-two subjects, including healthy volunteers (n = 6) and patients with suspected diseases of the thoracic aorta (n = 16), underwent noncontrast-enhanced 3D MR aortography at 3.0 T acquired using a navigator- or respiratory-gated 3D T1-weighted k-space segmented gradient-echo imaging sequence with radial data sampling (TR, 4.8 milliseconds; TE, 1.5 milliseconds; flip angle, 20 degrees; spatial resolution 0.66 x 0.76 x 5.6-6.4 mm) in the sagittal oblique imaging plane. ECG gating, fat-suppression, and T2-prepared pulses were employed. The vascular contrast of the thoracic aorta and the contrast ratio between the aorta and the superior vena cava or pulmonary artery were compared between the noncontrast-enhanced 3D MR aortography and transverse two-dimensional (2D) steady-state free precession. Image quality of the noncontrast-enhanced 3D MR aortography was rated on a 4 point scale (1, nondiagnostic, to 4, diagnostic and excellent image quality).

RESULTS

The noncontrast-enhanced 3D MR aortography provided vascular contrast of the thoracic aorta comparable to, and contrast ratio between the aorta and superior vena cava higher than, those of 2D steady-state free precession. The mean score of image quality of the noncontrast-enhanced 3D MR aortography was 3.0 (diagnostic with no or few artifact), and some major branch arteries were visualized by this imaging.

CONCLUSION

Respiratory-compensated 3D T1-weighted k-space segmented gradient-echo imaging with radial data sampling are feasible for the noncontrast-enhanced 3D MR aortography of the thorax at 3.0 T.

Authors+Show Affiliations

Department of Radiology, Nippon Medical School, Tokyo, Japan. yas-amano@nifty.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

19652612

Citation

Amano, Yasuo, et al. "Noncontrast-enhanced Three-dimensional Magnetic Resonance Aortography of the Thorax at 3.0 T Using Respiratory-compensated T1-weighted K-space Segmented Gradient-echo Imaging With Radial Data Sampling: Preliminary Study." Investigative Radiology, vol. 44, no. 9, 2009, pp. 548-52.
Amano Y, Takahama K, Kumita S. Noncontrast-enhanced three-dimensional magnetic resonance aortography of the thorax at 3.0 T using respiratory-compensated T1-weighted k-space segmented gradient-echo imaging with radial data sampling: preliminary study. Invest Radiol. 2009;44(9):548-52.
Amano, Y., Takahama, K., & Kumita, S. (2009). Noncontrast-enhanced three-dimensional magnetic resonance aortography of the thorax at 3.0 T using respiratory-compensated T1-weighted k-space segmented gradient-echo imaging with radial data sampling: preliminary study. Investigative Radiology, 44(9), 548-52. https://doi.org/10.1097/RLI.0b013e3181b4c0ec
Amano Y, Takahama K, Kumita S. Noncontrast-enhanced Three-dimensional Magnetic Resonance Aortography of the Thorax at 3.0 T Using Respiratory-compensated T1-weighted K-space Segmented Gradient-echo Imaging With Radial Data Sampling: Preliminary Study. Invest Radiol. 2009;44(9):548-52. PubMed PMID: 19652612.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Noncontrast-enhanced three-dimensional magnetic resonance aortography of the thorax at 3.0 T using respiratory-compensated T1-weighted k-space segmented gradient-echo imaging with radial data sampling: preliminary study. AU - Amano,Yasuo, AU - Takahama,Katsuya, AU - Kumita,Shinichiro, PY - 2009/8/5/entrez PY - 2009/8/5/pubmed PY - 2009/11/6/medline SP - 548 EP - 52 JF - Investigative radiology JO - Invest Radiol VL - 44 IS - 9 N2 - OBJECTIVE: To evaluate the feasibility of a respiratory-compensated three-dimensional (3D) T1-weighted k-space segmented gradient-echo imaging sequence with radial data sampling for noncontrast-enhanced 3D magnetic resonance (MR) aortography of the thorax at 3.0 T. MATERIALS AND METHODS: Twenty-two subjects, including healthy volunteers (n = 6) and patients with suspected diseases of the thoracic aorta (n = 16), underwent noncontrast-enhanced 3D MR aortography at 3.0 T acquired using a navigator- or respiratory-gated 3D T1-weighted k-space segmented gradient-echo imaging sequence with radial data sampling (TR, 4.8 milliseconds; TE, 1.5 milliseconds; flip angle, 20 degrees; spatial resolution 0.66 x 0.76 x 5.6-6.4 mm) in the sagittal oblique imaging plane. ECG gating, fat-suppression, and T2-prepared pulses were employed. The vascular contrast of the thoracic aorta and the contrast ratio between the aorta and the superior vena cava or pulmonary artery were compared between the noncontrast-enhanced 3D MR aortography and transverse two-dimensional (2D) steady-state free precession. Image quality of the noncontrast-enhanced 3D MR aortography was rated on a 4 point scale (1, nondiagnostic, to 4, diagnostic and excellent image quality). RESULTS: The noncontrast-enhanced 3D MR aortography provided vascular contrast of the thoracic aorta comparable to, and contrast ratio between the aorta and superior vena cava higher than, those of 2D steady-state free precession. The mean score of image quality of the noncontrast-enhanced 3D MR aortography was 3.0 (diagnostic with no or few artifact), and some major branch arteries were visualized by this imaging. CONCLUSION: Respiratory-compensated 3D T1-weighted k-space segmented gradient-echo imaging with radial data sampling are feasible for the noncontrast-enhanced 3D MR aortography of the thorax at 3.0 T. SN - 1536-0210 UR - https://www.unboundmedicine.com/medline/citation/19652612/Noncontrast_enhanced_three_dimensional_magnetic_resonance_aortography_of_the_thorax_at_3_0_T_using_respiratory_compensated_T1_weighted_k_space_segmented_gradient_echo_imaging_with_radial_data_sampling:_preliminary_study_ L2 - https://doi.org/10.1097/RLI.0b013e3181b4c0ec DB - PRIME DP - Unbound Medicine ER -