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Wyszukujesz frazę "neuroradiology" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Application of DynaCT in interventional neuroradiology
Autorzy:
Brzegowy, Paweł
Popiela, Tadeusz
Urbanik, Andrzej
Opis:
Background: DynaCT (Angiographic CT) is a new imaging technique that with the use of the angiographic apparatus allows the researchers to obtain images of the human body comparable to standard CTs. Owing to this, only one procedure gives us the possibility to evaluate the vascular system together with the surrounding soft tissues Material/Methods: DynaCT, similarly to the 3D DSA method, involves the use of a C-arm rotating around the patient during the acquisition process. Like in CT, the acquired data may be processed into secondary reconstructions: multiplanar (MPR), maximum-intensity projections (MIP) and volume rendering (VR). Results: Neuroradiologically obtained images allow for an assessment of such brain structures as: ventricular system, subarachnoid cisternae and, to a lesser degree, brain tissue. In case of examinations with intra-arterial contrast administration we get precise images of the vascular system together with cranial bone structures and soft tissues, comparable (from the qualitative point of view) to those obtained during the angioCTs using multi-slice scanners. In case of angioplasty, DynaCT with contrast administration provides us with information on the exact location of a stent inside a vessel. Similarly, in patients with aneurysms embolised with stents, this technique enables the visualization of the stent position in relation to the neck of the aneurysm. Owing to DynaCT, it is possible to quickly evaluate the complications which may appear during endovascular procedures, especially the intracranial bleeding. Conclusions: DynaCT provides us with information that facilitates the process of qualification for the surgical or intravascular treatment. It also allows for a fast evaluation of possible complications which may appear during endovascular procedures, without wasting time for patient's transfer to the CT room.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Superior ophthalmic vein and ophthalmic artery in immediate evaluation after endovascular treatment of carotid-cavernous fistulas
Autorzy:
Zięcina, Piotr
Brzozowski, Krzysztof
Piasecki, Piotr
Podgórski, Andrzej
Narloch, Jerzy
Opis:
Purpose: To validate superior ophthalmic vein (SOV) and ophthalmic artery (OA) usefulness in immediate evaluation of new endovascular approaches to treat carotid-cavernous fistulas (CCFs). Material and methods: A retrospective review of 597 intracerebral malformation embolisations yielded 40 embolisations of CCF in the treatment of 18 patients. Two interventional radiologists performed detailed radiological angiographic assessments. Results: Mean age at initial admission was 58.9 years (SD 18.5 years, range 24-85 years). Patients presented with: chemosis (50%), ocular bruit (50%), exophthalmos (61%), diminished visual acuity (77.8%), headache (16.7%), and intracerebral haemorrhage (5.55%), and 5.55% were asymptomatic. Unilateral fistulas (10-55.5%) showed more diversified venous drainage pattern than bilateral ones (8-44.4%). There were statistically significant differences in post-traumatic and spontaneous CCF regarding age (p = 0.036), type of fistula (p = 0.0008), and presence of pseudoaneurysm (p = 0.036). 77.8% of patients had increased ipsilateral SOV diameter. SOV enlargement was not associated with type of fistula, history of trauma, or degree of exophthalmos. Ipsilateral ophthalmic artery was visible in all patients on both pre- and postprocedural angiography on lateral projection. Pre- and post-procedural SOV diameter was significantly different. Internal carotid artery patency was 100%, while the overall final angiographic or clinical success was 85.7%. We had three cases of peri-procedural complications. Conclusions: We reported changeable dynamics of SOV and OA after endovascular treatment of CCFs and proved the feasibility of coils and Onyx-18 in the treatment thereof.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Are type I dural arteriovenous fistulas safe? : single-centre experience of endovascular treatment of dural arteriovenous fistulas
Autorzy:
Koziarski, Andrzej
Brzozowski, Krzysztof
Piasecki, Piotr
Zięcina, Piotr
Narloch, Jerzy
Opis:
Introduction: There are mixed reports on the incidence of intracranial haemorrhage in patients with dural arteriovenous fistulas. We assessed new proposed risk factors (i.a. number of outflows and outflow diameter) of intracerebral haemorrhage due to intracranial dural arteriovenous fistula and presented our personal experience in endovascular treatment of dural arteriovenous fistulas. Material and methods: The patient database from January 2006 and December 2016 was reviewed, and 25 patients with 28 dural arteriovenous fistulas were identified. Results: 50% of patients presented with intracerebral haemorrhage. Multiple dural fistulas occurred in 12% of patients. Spearman's rank correlation coefficient revealed that there was a strong association between Cognard classification type and time needed to treat (r = 0.59, p < 0.05), as well as the volume of contrast used (r = 0.77, p < 0.05). Infratentorial (r = 0.53, p < 0.05) and right-sided (r = 0.66, p < 0.05) localisation were more challenging to treat. Bleeding was associated with poorer clinical outcome (r = 0.48, p < 0.05). No significant differences were found between the non-haemorrhagic group and the haemorrhagic group regarding the number of outflows (p = 0.459) and largest outflow diameter (p = 0.298). Clinical evaluation at follow-up was as follows: 56% of patients were asymptomatic, 24% had non-significant disability, maintaining independency, 16% had moderate disability, and 8% died - one in the course of intracerebral haemorrhage and one due to other sustained injuries. There were no reported embolisation- related complications. Conclusions: To conclude, regardless of presentation, both symptomatic and asymptomatic dural arteriovenous fistulas deserve clinical attention, structured evaluation, and follow-up. Type I fistulas were associated with haemorrhage in 1/3 of all cases. Overall our results indicate that the risk of haemorrhage and dire consequences is multifactorial.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
External validation of the Brain Tumour Reporting and Data System (BT-RADS) in the multidisciplinary management of post-treatment gliomas
Autorzy:
Trivedi, Kamaxi Hitendrakumar
Bhole, Pallavi
Thakur, Meenakshi
Guha, Amrita
Gupta, Tejpal
Mahajan, Abhishek
Opis:
Purpose: To independently and externally validate the Brain Tumour Reporting and Data System (BT-RADS) for post-treatment gliomas and assess interobserver variability. Material and methods: In this retrospective observational study, consecutive MRIs of 100 post-treatment glioma patients were reviewed by two independent radiologists (RD1 and RD2) and assigned a BT-RADS score. Inter-observer agreement statistics were determined by kappa statistics. The BT-RADS-linked management recommendations per score were compared with the multidisciplinary meeting (MDM) decisions. Results: The overall agreement rate between RD1 and RD2 was 62.7% (k = 0.67). The agreement rate between RD1 and consensus was 83.3% (k = 0.85), while the agreement between RD2 and consensus was 69.3% (k = 0.79). Among the radiologists, agreement was highest for score 2 and lowest for score 3b. There was a 97.9% agreement between BT-RADS-linked management recommendations and MDM decisions. Conclusions: BT-RADS scoring led to improved consistency, and standardised language in the structured MRI reporting of post-treatment brain tumours. It demonstrated good overall agreement among the reporting radiologists at both extremes; however, variation rates increased in the middle part of the spectrum. The interpretation categories linked to management decisions showed a near-perfect match with MDM decisions.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Kliniczne zastosowania tomografii dwuenergetycznej
Clinical applications of dual energy tomography
Autorzy:
Knurek, Jakub
Tematy:
tomografia dwuenergetyczna
kardiologia
nefrologia
neuroradiologia
dual energy tomography
cardiology
nephrology
neuroradiology
Pokaż więcej
Wydawca:
Indygo Zahir Media
Powiązania:
https://bibliotekanauki.pl/articles/58906351.pdf  Link otwiera się w nowym oknie
Opis:
Głównym celem publikacji jest wyjaśnienie i ustalenie zastosowania najnowszych technik obrazowania tomografii komputerowej w medycynie przy użyciu dwuenergetycznego źródła promieniowania. Technika ta powszechnie została wdrożona dopiero w 2005 roku ze względu na ograniczenia technologiczne, co stanowi novum w tej dziedzinie nauki.
The main purpose of the publication is to explain and determine the application the latest tomography imaging techniques in medicine using dual energy radiation sources. This technique has been widely implemented only in 2005 due to technological limitations, which is a novelty in this field of science.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Embolizacja wewnątrznaczyniowa i mikrochirurgia naczyniaków tętniczo-żylnych mózgu : ocena kryteriów stosowanych w wyborze postępowania oraz wyniki leczenia
Endovascular coiling and microsurgery of the arteriovenous cerebral angiomas : the assessment of the criteria of treatment and outcome
Autorzy:
Pietraszko, Wojciech
Libionka, Witold
Turski, Tadeusz
Krzyszkowski, Tadeusz
Uhl, Henryka
Czepko, Ryszard
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
    Wyświetlanie 1-6 z 6

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