Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 10

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  srodki cieniujace
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
Ultrasonography is an imaging technique universally employed in veterinary medicine. It has many advantages, such as high availability, non-invasiveness, short examination time, no anesthesia, and low cost, but also some drawbacks, like low specificity. To overcome these limitations, ultrasound contrast agents (UCAs) and specific ultrasound contrast techniques have been developed. The application of UCAs and specific sonographic contrast techniques increase the specificity and sensitivity of ultrasound examination. Nowadays the new contrast-specific imaging techniques enable the separation of the linear tissue signal from the non-linear microbubble signal, which, combined with the introduction of second-generation UCAs, makes contrast-enhanced ultrasonography a very important diagnostic tool.
Using low osmolality, nonionized contrast medium Io- pamiro-300, Bracco mixed with the mucus prepared from the seed flax (Linum usitatissimum, L), a dacryocistor- hinography was performed experimentally on 8 healthy mongrel dogs. Assessing the occurrence of local and general complications was the aim of the investigation. On the basis of a radiographic examination it has been shown that the mixture of the contrast medium and seed flax mucus appeared to be a very useful compound for dacryo- cistorhinography, especially for the evaluation of nasolacrimal duct system course and its patency. Clinical observations and a histological examination proved that this compound of the contrast medium was well tolerated by the mucous membrane of the nasolacrimal system and the external eye tissues.
Contrast-enhanced ultrasonography is mainly used in heart examination and to detect and characterize focal liver lesions. CEUS also allows the evaluation of the spleen, pancreas, kidneys, lymph nodes and the detection of porto-systemic shunts. UCAs can be administered intracavitarily, e.g. in the urinary bladder. In human medicine CEUS is used in the assessment of anti-angiogenic treatment. In some cases concerning the detection and characterization of focal lesions in such organs as the liver, spleen and kidneys, CEUS is equally or more efficient than CECT. The advantages of CEUS are: non-invasiveness, high availability, short examination time, low cost expenses and good patient tolerance compared to contrast agents use in CECT and CEMRI. The appearance of UCAs decreased the gap dividing the diagnostic value of USG and CT/MRI and also allows the characterization of neoplastic lesions without the need of invasion biopsy and diagnostic laparatomy.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.