Free-breathing contrast-enhanced multiphase MRI of the liver in patients with a high risk of breath-holding failure: comparison of compressed sensing-accelerated radial and Cartesian acquisition techniques
| Autor: | Jeong Kyong Lee, Jin Sil Kim, Marcel Dominik Nickel, Jae Kon Sung, Eun Sun Choi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Gadoxetic acid
Image quality media_common.quotation_subject Contrast Media Breath Holding Imaging Three-Dimensional medicine.artery medicine Humans Contrast (vision) Radiology Nuclear Medicine and imaging media_common Aorta Artifact (error) Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Respiration GRASP Magnetic resonance imaging General Medicine Image Enhancement Magnetic Resonance Imaging Compressed sensing Liver Artifacts Nuclear medicine business medicine.drug |
| Zdroj: | Acta Radiologica. 63:1453-1462 |
| ISSN: | 1600-0455 0284-1851 |
| Popis: | Background Knowing the advantages and disadvantages of each magnetic resonance (MR) technique, would allow us to choose a sequence better suited in patients with a high risk of breath-holding failure. Purpose To compare the image quality of free-breathing contrast-enhanced multiphase MR imaging (MRI) using incoherent Cartesian k-space sampling combined with a motion-resolved compressed sensing reconstruction (XD-VIBE) and Golden-Angle Radial Sparse Parallel MRI (GRASP). Material and Methods A total of 67 patients were included. Overall image quality, motion artifacts, and liver edge sharpness on arterial and portal-venous phase were evaluated by two radiologists. We evaluated the signal intensity ratio between liver in the late arterial phase to aorta at peak enhancement and the detection rate of hypervascular lesions. Results Overall image quality, artifact, and liver edge sharpness scores of XD-VIBE and GRASP were not significantly different ( P = 0.070–0.397). Four (reviewer 1, 12.1%) and seven patients (reviewer 2, 21.2%) received non-diagnostic quality in the XD-VIBE group whereas one patient (reviewer 2, 2.9%) received non-diagnostic quality in the GRASP group. The ratio between the aorta and liver signal for GRASP was significantly higher than that of XD-VIBE (0.32 ± 0.10 vs. 0.47 ± 0.13; P Conclusion Overall image quality of XD-VIBE and GRASP were not significantly different. More XD-VIBE examinations were rated non-diagnostic. On the other hand, the relative liver parenchymal enhancement to the aorta in the late arterial phase of GRASP was higher than that of XD-VIBE, which potentially leads to lower detectability of hypervascular lesions on arterial phase images. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|