Abstract:
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Purpose: To evaluate the use of vector driven 3D multi-planar ultrasound
verses standard 2D imaging in the diagnosis of endometrial cavity masses during
Saline Infused Sonography.
Methods and Materials: In a five-month period, patients undergoing a Saline
Infused Sonogram (SIS) were evaluated on the GE Voluson Expert (GE Medical
systems, Waukesha Wisconsin) ultrasound machine. The standard SIS protocol was
followed for each case. 2D images were initially obtained, followed by 3D
acquisitions. All data sets were stored on the system for further manipulation
and evaluation. Upon completion of the SIS, the image information was processed
and optimized. The processed 3D multi-planar images were added to the study for
comparison with the 2D still images. All cases were performed and reviewed with
a radiologist.
Results: The relevant 2D information was enhanced in almost every case by the
3D multi-planar images. Additional diagnostic information was obtained
regarding size, shape and location of masses seen within the endometrial canal.
The ability to scroll through the entire 3D dataset and accurately measure,
along with the ability to rotate the images, gives a true multi-planar
representation of the endometrium. In some cases the 2D images did not
appreciate areas that the 3D multi-planar dataset was able to evaluate. The
actual size and morphology of the masses were better represented. 2D imaging
examines small sections at a time, therefore portions of the endometrium can go
unevaluated, whereas with the 3D volume acquisition, the entire endometrium is
interrogated and stored. The actual time to acquire a 3D data set is much
shorter than serial 2D slices, minimizing patient discomfort. Reconstruction
appears to add approximately 15 minutes to the end of the study to process the
3D volume data. Data processing must be preformed and reviewed on the Voluson
system. Currently PACS systems are not compatible with the Voluson, therefore
the 3D images can only be viewed as screen captures, removing the ability to
further manipulate the data on PACS systems.
Conclusion: 3D imaging adds valuable information to SIS exams with the ability
to re-manipulate data after acquisition and creating imaging planes not
accessible in 2D imaging. 3D imaging decreases patient imaging time and patient
discomfort. Currently the ability to process the data off line does not exist,
so data reconstruction must be performed on the Voluson taking up valuable room
time. (M.L., D.W. are consultants for GE Medical Systems.)
Ledwidge, M,
A New Dimension in Saline Infused Sonography. Radiological Society of North America 2003 Scientific Assembly and Annual Meeting, November 30 - December 5, 2003 ,Chicago IL.
http://archive.rsna.org/2003/3107203.html
