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NR 7-9/2005
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Urazy oczodołów w
obrazach jedno- i wielorzędowej tomografii komputerowej
Mono- and multislice
computed tomography of the orbita injury
Marek Olszycki1, Marcin
Kozakiewicz2, Anna Salagierska-Barwińska1,3,
Jarosław Chrz±stek1,3, Piotr Arkuszewski2,
Ludomir Stefańczyk1
1Z Zakładu Radiologii-Diagnostyki Obrazowej Instytutu
Radiologii, Diagnostyki Obrazowej i Medycyny Nuklearnej
Uniwersytetu
Medycznego w Łodzi
Kierownik: prof. dr hab. n. med. Ludomir Stefańczyk
2Z Kliniki Chirurgii Szczękowo-Twarzowej Instytutu
Chirurgii Uniwersytetu Medycznego w Łodzi
P. o. kierownik: dr n. med. Piotr Arkuszewski
3Z Centrum Diagnostycznego Wojewódzkiego Szpitala
Zespolonego im. M. Kopernika w Łodzi
Kierownik: dr n. med. Zbigniew Kaurzel |
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| Summary: |
Purpose: To
evaluate the reliability of the mono- (SCT) and
multisliced CT (MSCT) imaging and their post-processing
reconstructions in the cases of orbital trauma.
Material and methods: the spiral monoslice (n=20)
and spiral multisliced (n=5) CT studies were performed
in patients suffered from orbits' injuries. CT data were
reconstructed in the 2D and 3D mode. The CT original
images and the 2D and 3D reconstructions were evaluated
according to the quality of visualization of a
pathological lesions. Surgery was the method of
reference.
Results: The reconstructed 3D images in 16
patients examined in SCT mode and in 5 patients examined
in MSCT mode allowed to recognize properly the fracture.
In the 13 patients SCT and in the 3 ones MSCT revealed
the bone fragments and orbital soft tissues prolapse
towards maxilla sinus; including the lower rectus muscle
in 6 cases. In 1 patient evaluation of the 3D model
allowed to exclude communication with intracranial space.
The surgery correlated well with the source images and
2D/3D SCT and MSCT models. The diagnostic quality of the
raw SCT vs MSCT images was evaluated as equal, but MSCT
proved to be the better source for the post processing
reconstruction, because of higher resolution and better
smoothing.
Conclusions: - Spiral CT 2D and 3D reconstructed
images, especially generated from the MSCT, more clearly
than the source data depict anatomical spatial
relationships;
- 2D/3D reconstructions revealed the position, course
and displacement of a fractured fragments; thus it
supports the surgery. |
| Słowa kluczowe: |
urazy oczodołów,
tomografia komputerowa, wtórne rekonstrukcje. |
| Key words: |
orbits' injuries, computed
tomography, postprocessing reconstructions. |
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