We present a method to automatically register cerebral 2D digital subtraction angiography sequences (2D-DSA) to 3D rotational Xray angiography (3D-RA) volumes. The application is the validation of blood flow simulations for aneurysm treatment. We compute projection images of 3D-RA data sets and compare them to the 2D-DSA images. A three-step strategy is presented to calculate the registration w...

A 42-year-old woman with history of analgesic overuse and episodic migraine without aura presented thunderclap headache. She then ingested 4.5 g of dipyrone, 0.75 g of isometheptene, 0.45 g of caffeine and subsequently developed right hemiparesis and dysarthria. Brain computed tomography (CT) and digital subtraction angiography (DSA) are shown, respectively, in Figures 1A and 1B. Transcranial d...

We report here on a rare case of carotid artery angioplasty and stenting in a patient with spontaneous recanalization after complete occlusion of the proximal internal carotid artery (ICA). The patient initially showed severe stenosis at the left proximal ICA on MR angiography (MRA). Digital subtraction angiography (DSA) performed three days after MRA showed complete occlusion of the proximal I...

We present two cases of patients with celiomesenteric trunk in whom the celiac trunk and the superior mesenteric artery arise off a common vessel from the ventral part of the aorta, which was demonstrated by multi-detector (16 slices) computed tomography angiography (MDCTA) and confirmed by digital subtraction angiography (DSA). This is a very rare congenital vascular anomaly and its imaging de...

Background/Objective: Multislice computed tomographic (MSCT) angiography is a rapid and minimally invasive method for the detection of intracranial aneurysms. The purpose of this study was to compare MSCT angiography with digital subtraction angiography (DSA) in the diagnosis of cerebral aneurysms. Patients and Methods: In this cross sectional study we evaluated 111 consecutive patients [42(37....

Bowhunter's syndrome, also known as rotational occlusion of the vertebral artery, involves posterior circulation ischemia resulting from dynamic compromise of the dominant vertebral artery. This case highlights the importance of provocative digital subtraction angiography in making the diagnosis. A 41-year-old man presented for outpatient neurological evaluation for "lightheadedness" of several...

Digital imaging is becoming widely used in diagnostic radiology, and digital subtraction angiography (DSA) is now generally accepted [1-3]. Several studies have evaluated digital imaging using a computed radiography system for chest examinations [4-10] and for excretory urography [11] . This prospective study uses receiver operating curve analysis [12 , 13] to compare the diagnostic accuracy of...

This review was undertaken with an eye of providing an evidence-based guide for internists in the utilization of the various techniques in the diagnosis of pulmonary emboli. Pulmonary angiography represents a group of tests that are used alone or in combination to evaluate for the presence of pulmonary emboli (PE)† and encompasses computed tomography (CT) pulmonary angiography (which is noninva...

Twenty-six consecutive patients with pulsatile neck masses were studied with digital subtraction angiography (DSA) by venous injection, computed tomography (CT), and conventional direct angiography. The neck masses proved to be secondary to tortuous and ectatic carotid or subclavian arteries in 13 cases, resulted from subclavian artery aneurysms in three cases, and resulted from tumor in 10 cas...