This subject introduces and familiarises the students with the imaging modality of magnetic resonance imaging (MRI). It covers the MRI physics and instrumentation, detailed examination of pulse sequences, scan techniques and protocols utilised in clinical practice. It also considers quality assurance, magnetic and RF safety issues and departmental planning.
HD/FL
One session
School of Dentistry and Health Sciences
- The basic physics of magnetic resonance imaging: the atomic nucleus in magnetic field; radiofrequency pulse; magnetisation vector and its manipulation; production of 90o pulse; emission of NMR signal and free induction decay; transverse relaxation; T2* relaxation; longitudinal relaxation; spin density; measurements of T1,T2 and density weighted images.
- MRI instrumentation: magnetism; magnets, gradient magnetic fields; RF coils; superconducting cooling system; capabilities and specifications of magnetic resonance imaging; RF shielding requirements; relevant regulation standards.
- MRI pulse sequences and image generation: spatial encoding; Fourier transformation; image reconstruction; signal processing; data space; pulse sequence diagrams; conventional spin echo sequence; fast spin echo; gradient echo sequences; multiple slices imaging; 3D imaging; echo planar imaging; tissue suppress techniques; flow phenomena; MR angiography;
- Artefacts in MRI: image processing artefacts; chemical shift artefacts; truncation artefacts; patient related artefacts; RF related artefacts; magnetic susceptibility related artefacts; gradient related artefacts; flow related artefacts.
- Scanning parameters and image quality: scan time parameters and quality; signal to noise ratio; MR contrast parameters; tissue volume coverage; number of excitations; spatial resolutions; quality assurance and quality control programs in magnetic resonance imaging;
- Safety in MRI: static magnetic fields; time varying magnetic fields; RF safety considerations; cryogen consideration; department planning relevant to MRI; ethics, legal issues and professionalism in MRI.
- Examination techniques and protocols used in MRI examinations: contrast media and uses in MRI examinations; normal anatomical and common pathological as may be demonstrated by MRI.
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The information contained in the 2018 CSU Handbook was accurate at the date of publication: August 2018. The University reserves the right to vary the information at any time without notice.