نتایج جستجو برای: digital subtraction angiography dsa

تعداد نتایج: 360515  

Journal: :AJNR. American journal of neuroradiology 2000
A M Masaryk R Frayne O Unal A H Rappe C M Strother

BACKGROUND AND PURPOSE Previous studies have depicted arterial and aneurysmal anatomy with three-dimensional time-of-flight (3D-TOF) MR angiography before and after treatment with Guglielmi detachable coils (GDCs) and with CT angiography before and after treatment with stents and stent-grafts. We investigated the ability of time-resolved contrast-enhanced 3D MR angiography (3D MR digital subtra...

2015
Won Ho Cho Hyuk Jin Choi Kyoung Hyup Nam Jae Il Lee

Contrast extravasation on computed tomography angiography (CTA) is rare but becoming more common, with increasing use of CTA for various cerebral vascular diseases. We report on two cases of spontaneous subarachnoid hemorrhage (SAH) in which the CTA showed a saccular lesion of the upper basilar trunk suggesting a ruptured aneurysm. However, no vascular lesion was observed on immediate subsequen...

Journal: :iranian journal of radiology 0
kavous firouznia advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran hossein ghanaati advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran aliakbar sharafi medical physics department, iran university of medical sciences, tehran, iran firouze abahashemi advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran hassan hashemi advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran amir hossein jalali advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran; advanced diagnostic and interventional radiology research center (adir), medical imaging center, imam khomeini hospital, keshavarz blvd., tehran, iran. , +98-21-66581579

background uterine artery embolization (uae) is a minimally invasive procedure performed under fluoroscopy for the treatment of uterine fibroids and accompanied by radiation exposure. objectives to compare ovarian radiation doses during uterine artery embolization (uae) in patients using conventional digital subtraction angiography (dsa) with those using digital flat-panel technology. patients ...

Journal: :International journal of clinical and experimental medicine 2015
Yuanxing Guo Shan-Xing Ou Min Qian Xiaotao Zeng Bin Li

PURPOSE To investigate the clinical utility of dual-source dual-energy CT angiography (DSDECTA) for diagnosing intracranial dural arteriovenous fistula (DAVF). METHODS Nine intracranial DAVF patients were examined using Siemens DSDECTA and cerebral digital subtraction angiography (DSA). Imaging data were retrospectively analyzed to evaluate the concordance between the imaging modalities. RE...

Journal: :Turkish neurosurgery 2012
Hidenori Suzuki Hiroaki Maki Waro Taki

AIM An image fusion of 3-dimensional (D) digital subtraction angiography (DSA) and magnetic resonance (MR) images, DSA-MR fusion, can simultaneously visualize both information of the vasculature provided by 3D DSA and of the soft tissues provided by MR images. The authors assessed the usefulness of DSA-MR fusion images concerning the pretreatment evaluation for cerebral arteriovenous malformati...

Journal: :AJNR. American journal of neuroradiology 2013
J S McDonald D F Kallmes G Lanzino H J Cloft

BACKGROUND AND PURPOSE Both CT angiography and digital subtraction angiography are used to detect aneurysms in patients with subarachnoid hemorrhage. We examined a large multihospital data base to determine how practice is evolving with regard to the use of CT angiography and DSA in patients with ruptured cerebral aneurysm. MATERIALS AND METHODS The Premier Perspective data base was used to i...

Journal: :Neurologia medico-chirurgica 2003
Fujimaro Ishida Tadashi Kojima Kenji Kawaguchi Tamotsu Hoshino Kenichi Murao Waro Taki

Conventional digital subtraction angiography (DSA) identified a right carotid-cavernous fistula (CCF). Three-dimensional DSA (3D-DSA) was used to evaluate the CCF before treatment. The 3D-DSA images showed the anatomical relationship of the parent artery and the veins, which was difficult to understand on conventional DSA. The endoscopic image revealed the fistula and cavernous sinus. The direc...

Journal: :Journal of physics 2022

Abstract In order to improve the safety of digital subtraction angiography (DSA) equipment in treatment cardiovascular diseases, a hybrid collision detection algorithm based on separation distance is proposed by combining oriented bounding box (OBB) with GJK algorithm. Firstly, according structure DSA equipment, real-time position simulated robot operating system (ROS); Then, OBB used envelope ...

Journal: :iranian journal of neuro surgery 0
ماتئو کاپوزا matteo capozza جیووانی بربگلی giovanni barbagli department of neurosurgery, university of florence, largo palagi 1, florence, italy آندرآ بوچی andrea boschi بهمن اشرف نوبری bahman ashraf-noubari سرجیو ناپینی sergio nappini نیکولا لیمبوچی nicola limbucci آرتورو کونسولی

background and importance: symptomatic vasospasm is a well-known pathology associated with ruptured aneurysms. nevertheless, this condition is rarely found as a result of skull base tumor removal. case presentation: we reported a new case of 40-year-old woman previously treated for a tuberculum and diaphragma sellae meningioma showing symptomatic vasospasm after twelve post-operative days witho...

Journal: :Archives of surgery 2011
John M Moos Sung W Ham Sukgu M Han Wesley K Lew Hong T Hua Douglas B Hood Vincent L Rowe Fred A Weaver

OBJECTIVE Reports of fatality following carbon dioxide digital subtraction angiography (CO2-DSA) have raised concerns regarding its safety. This study reviews the safety of CO2-DSA. DESIGN Single-institution retrospective review. SETTING Tertiary care teaching hospital in Los Angeles, California. PATIENTS A total of 951 patients who underwent 1007 CO2-DSA procedures during a 21-year perio...

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