Improvement of image quality using BLADE sequences in brain MR imaging |
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| Authors: | Eleftherios Lavdas Panayiotis Mavroidis Spiros Kostopoulos Dimitrios Glotsos Violeta Roka Theofilos Topalzikis Athanasios Bakas Georgia Oikonomou Nikos Papanikolaou Georgios Batsikas Ioannis Kaffes Dimitrios Kechagias |
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| Institution: | 1. Department of Medical Radiological Technologists, Techological Education Institute of Athens, Greece;2. Department of Radiological Sciences, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, USA;3. Department of Medical Physics, Karolinska Institutet & Stockholm University, Stockholm, Sweden;4. Department of Medical Instruments Technology, Techological Education Institute of Athens, Greece;5. Health Center of Farkadona, Trikala, Greece;6. Department of Medical Imaging, IASO Thessalias Hospital, Larissa, Greece |
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| Abstract: | The purpose of this study is to compare two types of sequences in brain magnetic resonance (MR) examinations of uncooperative and cooperative patients. For each group of patients, the pairs of sequences that were compared were two T2-weighted (T2-W) fluid attenuated inversion recovery sequences with different k-space trajectories (conventional Cartesian and BLADE) and two T2-TSE weighted with different k-space trajectories (conventional Cartesian and BLADE). Twenty-three consecutive uncooperative patients and 44 cooperative patients, who routinely underwent brain MR imaging examination, participated in the study. Both qualitative and quantitative analyses were performed based on the signal-to-noise ratio, contrast-to-noise ratio (CNR), and relative contrast (ReCon) measures of normal anatomic structures. The qualitative analysis was performed by experienced radiologists. Also, the presence of motion, other (e.g., Gibbs, susceptibility artifacts, phase encoding from vessels) artifacts and pulsatile flow artifacts was evaluated. |
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| Keywords: | 1 5T MRI Motion artifacts BLADE sequences Brain examination |
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