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SENSE Flex-M coil: positioning for a shoulder examination

Application Tip
Teitsma, Loretta Philips Healthcare Philips Global
van den Heuvel, Martina Philips Healthcare Philips Global

 

  • The SENSE Flex-M coil is a commonly used coil for shoulder imaging.

Workflow

  • Prevent motion of the arm by positioning the arm next to the patient in a comfortable position.

 

  • Put the shoulder as much in the iso-center of the magnet bore as possible, by positioning the patient slightly semi-oblique.

 

  • Support the patient's back and legs with cushions to prevent motion. 

 

  • Position the elements exactly on the gleno-humural joint.

 

  • Position one element by encompassing the top of the shoulder. This element is then approximately in the sagittal plane (see image below).

 

  • Position the second element on top of the first in approximately the coronal plane.

 

  • Make sure there is an overlap of roughly 20% for optimal SNR.

 

  • The coil is loosely attached to the patient by the same strap as used for the first element.

 

Positioning Step 1: Position one element by encompassing the top of the shoulder. 
This element is then approximately in the sagittal plane.Positioning Step 2: Position the second element on top of the first in approximately the coronal plane.
Make sure there is an overlap of roughly 20%.
The coil is loosely attached to the patient by the same strap as used for the first element.
Positioning Step 1:
Positioning Step 2:
Position one element by encompassing the top of the shoulder. This element is then approximately in the sagittal plane.
Position the second element on top of the first in approximately the coronal plane. Make sure there is an overlap of roughly 20%. The coil is loosely attached to the patient by the same strap as used for the first element.
SENSE Flex-M coils: Optimal positioning
SENSE Flex-M coils: Optimal positioning

Traditional way of positioning versus best way of positioning

Traditional way of positioning Often leads to coupling of the elements and thus reduced SNR. This method should not be used anymore.Best way of positioning To get the maximum SNR.
Traditional way of positioning
Best way of positioning
Often leads to coupling of the elements and thus reduced SNR. This method should not be used anymore.
To get the maximum SNR.

Links to related documents

This Application Tip "SENSE Flex coils: applications and positioning" provides

 

  • Information on the coils, on their applications and on general coil positioning
  • More links to other related documents, all dealing with the SENSE Flex coils


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Application Tip
Achieva 1.5T, Achieva 3.0T, Intera 1.0T, Intera 1.5T, Intera 3.0T
Release 1, Release 1 (FreeWave), Release 10, Release 11, Release 12, Release 2, Release 2 (FreeWave), Release 2.5, Release 2.6, Release 7, Release 8, Release 9
Explorer / Nova Dual, Gradient, gradients, Master / Nova, Master / Quasar Dual, Nova, Nova Dual, Omni / Stellar, Omni / Stellar, Power / Pulsar, Pulsar, Quasar, Quasar Dual
Musculoskeletal, Shoulder
 

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