General
MRI related Resources
MRI and Radiology Teaching Files
MRI and Radiology Teaching Files
Ray’s Radiology Teaching FilesCurrent number of unique diseases in each section:
- Brain: 23
- Spine: 15
- Musculoskeletal: 25
- Head and Neck: 4
- Chest: 9
- Abdomen and Pelvis: 24
Total number of cases including those with the same diagnosis: 101
Total number of images: 425
Number of View :422
Magnetic resonance imaging (MRI)
Magnetic resonance imaging (MRI), or Nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in Radiology to visualize the structure and function of the body. It provides detailed images of the body in any plane. MRI provides much greater contrast between the different soft tissues of the body than does computed tomography (CT), making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging. Unlike CT, it uses no ionizing radiation, but uses a powerful magnetic field to align the nuclear magnetization of (usually) hydrogen atoms in water in the body. 
Number of View :284
MRI Modic Type
Modic type are signal intensity changes in vertebral body marrow adjacent to the endplates of degenerative discs.
Michael T. Modic, MD, wrote about these changes in the journal Radiology in 1988, and his name has been associated with these changes ever since.
Modic changes take 3 main forms: Read more…
Number of View :915Categories: General Tags: Modic Type, MRI
Basic MRI scans
T1-weighted MRI
T1-weighted scans are a standard basic scan, in particular differentiating fat from water – with water darker and fat brighter use a gradient echo (GRE) sequence, with short TE and short TR. This is one of the basic types of MR contrast and is a commonly run clinical scan. The T1 weighting can be increased (improving contrast) with the use of an inversion pulse as in an MP-RAGE sequence. Due to the short repetition time (TR) this scan can be run very fast allowing the collection of high resolution 3D datasets. A T1 reducing gadolinium contrast agent is also commonly used, with a T1 scan being collected before and after administration of contrast agent to compare the difference. In the brain T1-weighted scans provide good gray matter/white matter contrast; in other words, T1-weighted images highlight fat deposition.
Number of View :418
