MRI FABS View : Protocol and Planning
Indications for FABS View MRI
Patient preparation for FABS View MRI
Positioning for FABS View MRI
Recommended FABS View MRI Protocols and Planning
A two-plane large FOV localizer must be taken at the beginning to localize and plan the sequences. Typically, these localizers take less than 25 seconds and can be achieved using T1 weighted low-resolution scans. It is advisable to obtain additional localizers until you have acquired accurate axial, coronal, and sagittal localizer images.
For proper planning of the FABS view, it is necessary to include a second three-plane localizer. The first two localizers should be planned in the sagittal plane. Align the first planning block parallel to the humerus for the coronal plane, and align the second planning block parallel to the radius and ulna for the axial localizer. The last localizer should be planned based on the initial coronal localizer of the forearm and aligned parallel to the radius and ulna to obtain a proper sagittal localizer.
PD Fat saturated coronal 2mm SFOV
Plan the coronal slices on the sagittal plane and angle the planning block parallel to the humerus. Check the positioning block in the other two planes. An appropriate angle must be used in the axial plane (perpendicular to the radius and ulna or parallel to the medial and lateral epicondyle of the humerus). Slices must be sufficient to cover the entire humerus from the radial tuberosity to the triceps brachii tendon. Adding saturation bands to the bottom of the coronal block will help reduce arterial pulsation artifacts.
T1 tse coronal 2mm SFOV
Plan the coronal slices on the axial plane and angle the positioning block parallel to the medial and lateral humeral epicondyles. Check the positioning block in the other two planes. An appropriate angle must be used in the sagittal plane (parallel to the humerus and ulna). Slices must be sufficient to cover the whole elbow joint from the anterior to posterior aspect. Adding saturation bands on the top and bottom of the coronal block will help to reduce arterial pulsation artifacts. The phase direction must be head to feet with a minimum of 100% oversampling to avoid wrap-around and pulsation artifacts.