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1.5T IAC Vertigo - AZ St. Jan, Brugge, Belgium

ExamCard
Casselman, Jan, M.D., Ph.D. Brugge, AZ St. Jan AV
van Battum, Marjolijn Philips Healthcare

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ExamCard purpose

This ExamCard is applied to perform a high resolution examination of the inner ear in patients with vertigo.

Description

In this examination the SENSE Head coil is used for the brain scanning.

The SENSE Flex-S coil is used for the high resolution images of the IAC.

Patient set up

The SENSE Flex-S coil is positioned over the ears of the patient.

The head phone is used to fixate the SENSE Flex-S coil.

Finally the patient is positioned into the SENSE Head coil.

This way of positioning has 2 benefits:

  • The SENSE Flex-S coil is close to the ear for good signal to noise.
  • The fixation of the patient is good and the patient is not likely to move during the lengthy scans.
Positioning of the coils
Positioning of the coils

 

After the normal brain survey and the ref scans for both SENSE Head coil and SENSE Flex-S coil a detailed coronal survey is made to enable correct positioning of the high resolution scans of the inner ear.

 

A standard Dual SE sequence is used for imaging the brain. The scan time is 5:25 min. 19 slices of 6 mm. slice thickness are acquired.

 

A higher resolution Dual SE is used to evaluate the brain stem and the cerebellum. Causes of vertigo are often located in these areas. The scan time is 8:17 min. to obtain18 slices with a 0.9 x 0.9 x 4.0 mm. voxelsize. Both sequences are scanned with the SENSE Head coil.

 

A T2 DRIVE of the IAC is acquired with the FLEX S coil to obtain ultra high resolution images of the inner ear without artifacts. This high resolution is needed to visualize small lesions of the IAC. SENSE was used to obtain these images with 0.3 x 0.6 x 0.7 mm voxel size in 8:37 minutes scan time.

 

After contrast injection a T1W FFE PCA is performed with the SENSE Flex-S coil. The T1W FFE images are used to visualize lesions. The scan time is 6:45 min. to obtain 100 slices of 0.6 mm slice thickness.

Images

DUAL HR T2 DRIVE T1FFE PCA
DUAL HR
T2 DRIVE
T1FFE PCA


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Nov 27, 2005

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ExamCard
Intera 1.5T
Release 10, Release 11, Release 9
IAC, Neuro
 

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