Non-contrast-enhanced magnetic resonance venography using magnetization-prepared rapid gradient-echo (MPRAGE) in the preoperative evaluation of living liver donor candidates: Comparison with conventional computed tomography venography

2017 ◽  
Vol 90 ◽  
pp. 89-96 ◽  
Author(s):  
Rikiya Yamashita ◽  
Hiroyoshi Isoda ◽  
Shigeki Arizono ◽  
Ayako Ono ◽  
Natsuko Onishi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Preoperative Evaluation ◽  
Magnetic Resonance Venography ◽  
Gradient Echo ◽  
Liver Donor ◽  
Living Liver Donor ◽  
Contrast Enhanced ◽  
Computed Tomography Venography

scholarly journals Gadofosveset-enhanced magnetic resonance venography in patients with venous pathology of the lower limbs – Comparison of diagnostic image quality and inter-rater variability with gadobutrol venography and computed tomography venography

2016 ◽  
Vol 31 (10) ◽  
pp. 737-743
Author(s):  
Michael Åkesson ◽  
Leena Lehti ◽  
Peter Höglund ◽  
Per Åkeson ◽  
Johan Wassélius
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Image Quality ◽  
Magnetic Resonance Venography ◽  
Control Groups ◽  
Cohen’S Kappa ◽  
Reliable Technique ◽  
Cohen's Kappa ◽  
Diagnostic Capability ◽  
Computed Tomography Venography

Purpose This study was performed to compare the diagnostic quality of Gadofosveset-enhanced magnetic resonance venography with Gadobutrol-enhanced magnetic resonance venography and computed tomography venography for the deep veins of the lower extremities in patients with iliocaval venous pathology. Materials and methods Diagnostic capability and image quality were assessed by two independent readers. Inter-reader variability was analyzed by unweighted and quadratic weighted Cohen’s kappa values. Results The diagnostic capability was equal to or higher in the Gadofosveset group for all examined vessel segments compared with both control groups. The image quality score was significantly higher for the Gadofosveset group compared to both control groups. Inter-reader variability expressed by quadratic weighted Cohen’s kappa value (k) showed less variability in the Gadofosveset group compared to the control groups. Conclusion Our results show that Gadofosveset-enhanced magnetic resonance venography is a reliable technique in clinical routine practice, with image quality superior to both Gadobutrol-enhanced magnetic resonance venography and computed tomography venography.

scholarly journals Imaging of the adrenal gland lesions

2014 ◽  
Vol 47 (4) ◽  
pp. 228-239 ◽  
Author(s):  
Keith Herr ◽  
Valdair F. Muglia ◽  
Walter José Koff ◽  
Antonio Carlos Westphalen
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Adrenal Gland ◽  
Photon Emission ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Contrast Enhanced ◽  
Cross Sectional Imaging ◽  
Contrast Enhanced Ultrasonography ◽  
Photon Emission Tomography

With the steep increase in the use of cross-sectional imaging in recent years, the incidentally detected adrenal lesion, or "incidentaloma", has become an increasingly common diagnostic problem for the radiologist, and a need for an approach to classifying these lesions as benign, malignant or indeterminate with imaging has spurred an explosion of research. While most incidentalomas represent benign disease, typically an adenoma, the possibility of malignant involvement of the adrenal gland necessitates a reliance on imaging to inform management decisions. In this article, we review the literature on adrenal gland imaging, with particular emphasis on computed tomography, magnetic resonance imaging, and photon-emission tomography, and discuss how these findings relate to clinical practice. Emerging technologies, such as contrast-enhanced ultrasonography, dual-energy computed tomography, and magnetic resonance spectroscopic imaging will also be briefly addressed.

Combined high-resolution 3D CUBE T1-weighted imaging and non-contrast-enhanced magnetic resonance venography for evaluation of vein stenosis in May–Thurner syndrome

2021 ◽  
pp. 026835552110451
Author(s):  
Shanshan Shen ◽  
Chunhui Shan ◽  
Yanqin Lan ◽  
Yingmin Chen ◽  
Jikuan Li ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
High Resolution ◽  
Duplex Ultrasound ◽  
Magnetic Resonance Venography ◽  
Common Iliac Vein ◽  
Acute Thrombosis ◽  
Stenosis Rate ◽  
Contrast Enhanced ◽  
High Resolution Mri ◽  
Mean Diameter

Purpose To explore the feasibility of high-resolution MRI 3-dimensional (3D) CUBE T1-weighted magnetic resonance imaging (MRI) in combination with non-contrast-enhanced (NCE) magnetic resonance venography (MRV) for the assessment of lumen stenosis in May–Thurner syndrome. Methods Twenty-nine patients underwent computed tomography venography (CTV) and high-resolution MRI-CUBE T1, and NCE MRV acquisitions. ANOVA and LSD tests were used to compare the stenosis rate and narrowest and distal diameters of the vessel lumen. Results There were no significant differences in the estimated stenosis rate between CTV, CUBE T1, and NCE MRV (p = 0.768). However, there were significant differences in the measured stenosis diameters of the left common iliac vein (LCIV), with CTV giving the largest mean diameter and CUBE had the smallest mean diameter (p < 0.05). The measured normal LCIV diameters did not significantly differ between MRV and CUBE (p = 0.075) but were significantly larger on CTV than on MRV and CUBE (p < 0.05). Conclusions Compared with CTV, a combination of CUBE and MRV could provide an improved assessment of the degree of lumen stenosis in May–Thurner syndrome and demonstrate acute thrombosis. MRI underestimates the diameter of the vessel in comparison with CTV. MRI can be a substitute tool for Duplex ultrasound and CTV.

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