Rapid Musculoskeletal Magnetic Resonance Imaging Using Integrated Parallel Acquisition Techniques (IPAT) - Initial Experiences
| Autor: | K.-F. Kreitner, Katja Oberholzer, Lars Peter Müller, B. Romaneehsen |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors Adolescent Image quality Knee Injuries Sensitivity and Specificity Fractures Bone Musculoskeletal disorder medicine Humans Radiology Nuclear Medicine and imaging Detection theory Ankle Injuries Child Aged Sensitivity encoding Aged 80 and over Musculoskeletal imaging medicine.diagnostic_test business.industry Magnetic resonance imaging Middle Aged medicine.disease Magnetic Resonance Imaging Femoral Neck Fractures Surgery medicine.anatomical_structure Electromagnetic coil Feasibility Studies Female Ankle business Algorithms Hip Injuries Biomedical engineering |
| Zdroj: | RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 175:1193-1197 |
| ISSN: | 1438-9010 1438-9029 |
| DOI: | 10.1055/s-2003-41926 |
| Popis: | Purpose To investigate the feasibility of using multiple receiver coil elements for time saving integrated parallel imaging techniques (iPAT) in traumatic musculoskeletal disorders. Material and methods 6 patients with traumatic derangements of the knee, ankle and hip underwent MR imaging at 1.5 T. For signal detection of the knee and ankle, we used a 6-channel body array coil that was placed around the joints, for hip imaging two 4-channel body array coils and two elements of the spine array coil were combined for signal detection. All patients were investigated with a standard imaging protocol that mainly consisted of different turbo spin-echo sequences (PD-, T (2)-weighted TSE with and without fat suppression, STIR). All sequences were repeated with an integrated parallel acquisition technique (iPAT) using a modified sensitivity encoding (mSENSE) technique with an acceleration factor of 2. Overall image quality was subjectively assessed using a five-point scale as well as the ability for detection of pathologic findings. Results Regarding overall image quality, there were no significant differences between standard imaging and imaging using mSENSE. All pathologies (occult fracture, meniscal tear, torn and interpositioned Hoffa's cleft, cartilage damage) were detected by both techniques. iPAT led to a 48 % reduction of acquisition time compared with standard technique. Additionally, time savings with iPAT led to a decrease of pain-induced motion artifacts in two cases. Conclusion In times of increasing cost pressure, iPAT using multiple coil elements seems to be an efficient and economic tool for fast musculoskeletal imaging with diagnostic performance comparable to conventional techniques. |
| Databáze: | OpenAIRE |
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