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History:
62 year male with goiter. Pre-operative evaluation.
Technique:
Multiplanar CT of the neck was performed on a 16-detector spiral CT
during the dynamic injection intravenous contrast. Images were
obtained with 0.75 mm collimation (slices) with reconstruction of 2D
and 3D images in multiple planes.
Findings:
Conventional axial image (figure 1) shows a right lobe thyroid mass
(M) and a small isthmus nodule (arrow). On the coronal image (figure
2), displacement of the trachea (T) and right carotid artery/jugular
vein (red arrow) by the mass (M) is seen. 3D CT angiography/venography
of the neck (figure 3) also shows the displacement of the right common
carotid artery and internal jugular vein (arrow). Curved planar
reformatted image in the frontal projection (figure 4) shows the
entire thyroid gland (M = masss; L = left lobe; I = insthmus nodule).
Discussion:
Neck CT's at Main Street Radiology are performed with
sub-millimeter slices, enabling mutiplanar 2D and 3D reconstructions.
Due to the thin slices, nearly "isotropic" volume
acquisition is obtained, which enable high-resolution images to be
generated in any plane. Multiplanar imaging can be helpful in defining
anatomy, especially for surgical planning. This includes
high-resolution imaging of the laryngeal cartilage (yellow arrows on
Figure 2) which was previously not possible with routine CT exams.
At Main-Street Radiology, multiplanar
CT imaging is routinely performed in the head and neck region,
including the soft tissues of the neck, temporal bones, and sinuses.
Multiplanar imaging is also utilized in many other areas, including
the liver, kidneys, pancreas, and extremities.
