This application tip provides information on the SENSE Flex coils: their applications and coil positioning.
The SENSE Flex coils are flexible coils consisting of two elements; each element is labelled with an identification number.
The SENSE Flex coil is available in three sizes:
SENSE Flex-S coil (Small): 2 circular elements of 11 cm diameter (opening 8 cm)
Applications: TMJ, eyes, IAC, small joints (wrist), superficial vessels (carotid arteries), pediatric
SENSE Flex-M coil (Medium): 2 elliptical elements of 14 cm x 17 cm
Applications: Shoulder, single hip, knee, ankle, pediatric imaging, carotid arteries.
SENSE Flex-L coil (Large): 2 circular elements of 20 cm diameter (opening 17 cm)
Applications: Brain, brachial plexus, pediatric imaging, pelvis, thorax, prostate.
Note that the SENSE Flex-S coil is not available on 3.0T systems.
Positioning the coil, care must be taken to avoid "coupling" or "cross-talk" between the two elements. To avoid coupling:
- Keep a minimum distance of approximately half the size of an element between the coil elements if they are positioned parallel.
- Ensure that the coil elements do not touch if they are positioned next to each other. It is better if the coil elements overlap a few centimeters.
- Ensure that the elements do not touch if they are positioned at an angle. Position one element slightly on the other instead.
- Do not connect the coil until the patient is positioned in the bore. This makes coil handling easier.