|
|
|
Figure
1 |
|
|
|
Figure
2 |
|
|
|
Figure
3 |
History:
61 year old male with hematuria. IVP was performed (Figure 1)
demonstrating severe dilatation of the right collecting system and
dilatation of the mid ureter, of uncertain etiology. The patient was
referred to Main Street Radiology for a CT scan of the
abdomen and pelvis.
Findings:
As part of "hematuria protocol" CT, 3D CT urography was
performed (Figures 2-3). A distal right ureteral calculus is seen
(arrow) resulting in dilatation of the mid right ureter. Right UPJ
obstruction is also noted.
Discussion:
With a 16-detector spiral CT, 3D volumetric imaging can be
obtained. There are numerous applications which have revolutionized
medical imaging. In studying the urinary tract, 3D images surpass the
diagnostic capabilities of IVP and routine CT.
At MSR, "hematuria
protocol" CT routinely involve acquisition of 3D CT urography
images, as well as the traditional pre- and post-contrast thin section
axial images of the kidneys.
MSR is the first facility in
Queen with a 16-detector spiral CT and one of the few centers in the
New York area to routinely perform CT urography.
