Serial Magnification Cerebral Angiography

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Superficial Sylvian Veins as Landmarks for Operation of

went stereoscopic, magnification, and serial cerebral angiography with their heads placed in the operat­ ing position; that is, with the head turned about 30 degrees away from the side of the aneurysm and tilted slightly backward. By tracing the superficial Sylvian veins of the venous phase on the arterio­

Serial cerebral angiography in stereoscopic magnification

Stereoscopic cerebral angiography isperformed with direct serial magnification using aheavy-duty anode tube with a0.1 mm focus. This technique combines the advantages of magnification and stereoscopic angiography. Small arterial and venous changes can beobserved clearly inthree dimensions. The usefulness and limitations ofthis method

Effect of Head Turning on Blood Flow in Lateral Sinuses of

summed or total cerebral blood flow through the right and left lateral sinuses remained remarkably constant through­ out the periods of recordings, regardless of head position (fig. 2). Angiography demonstrated a less striking but simi­ larly shifting pattern of blood flow in response to about 45° head turning (fig. 3). Discussion

Stereoscopic Magnification in Spinal Angiography

Stereoscopic Magnification in Spinal Angiography Heinzgeorg Vogelsang 1 and Kurt Dietz2 This technique combines the advantages of magnification and stereoscopic angiography. A heavy-duty x-ray tube oscillating between two positions (25 mm apart) allows serial spinal angio­ grams to be produced in stereo magnification (factor 2.0) using

In Vitro Quantification of the Radiopacity of Onyx during

control of the angiography machine at 70.0 kilovolt (kV), 31.0 milliamps (mA), and 3.5 millisecond (ms) using a small focal spot without copper filtering. Radiographs were taken at every 5 droplets during the casting mode and at every droplet during the plugging mode, resulting in seven images in casting mode and five in plugging mode in every

Metastatic Leiomyosarcoma of the Brain Manifesting as

regions (Fig. 2). Cerebral angiography showed no tumor staining or vascular malformation, and whole body CT revealed abnormal masses in the liver, left adrenal gland, and duodenum. Serum levels of the alpha-fetoprotein, carcinoembryonic antigen, and carbohydrate antigen 19-9 were within normal limits. The preoperative differential diagnosis in-

Lacunar Stroke: A Reassessment

the cerebral and cerebellar cortices, cerebral peduncles, and medullary pyramids. Most were less than 5 mm in diameter, and those greater than 10 mm, termed giant, constituted only 17% of the total. Althoughoccasional¬ ly amber, the lesions were usually pale and rarely contained a blood ves¬ sel. Accepted for publication June 12, 1982. From

Birth and Growth of Neuroimaging and Vascular Intervention at

in seconds. A further technique of magnification was added while exposing the angiographic films, using the air gap technique on removing the stationary grid from the top of the serial film changer. Soon such angiography procedures with magnification and subtraction became routine. It may be noted that resolution of the image on magnification angi-

Mural destabilization after aneurysm treatment with a flow

angiography confirmed a giant (35×23×25 mm) right carotid terminus aneurysm incorporating the origins of the M1 segment of the middle cerebral artery and A1 segment of the anterior cerebral artery. Following extensive discussions with both neuro-vascular surgeons and endovascular neurointerven-tionists, the patient elected to undergo endovascular

Advances in the imaging of cerebral aneurysm inflammation

the role of inflammation in the pathobiology of cerebral aneurysms. Several studies have demonstrated that inflammation plays a key role in cerebral aneurysm formation and rupture. [7-9] Specifically, the role of macrophages in the response to inflammatory mediators has been proposed as a mechanism for aneurysm rupture. [10,11] However,

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middle cerebral arteries with low cerebral perfusion without evidence of brain death. Electroencephalogram showed continuous beta range frequency (12-15 Hz) on a poorly reactive background intermixed with slower frequency in 7-8.5 Hz range and no significant focality. The patient became comatose, with no brain stem reflexes and was pronounced dead.

Clinical Reasoning: An unusual cause of adult cryptogenic

the head and neck was performed, demonstrating a right middle cerebral artery (MCA) (M1) occlusion. Our institution was consulted as per protocol for ischemic strokes associated with large artery occlusion and she was transferred for potential intra-arterial (IA) thrombectomy.

Exceptional Multiplicity of Cerebral Arteriovenous

lowed up with serial MR imaging and cerebral angiography. Discussion Cerebral arteriovenous malformations are congenital vascular anomalies that most likely represent the abnormal persistence of embry-onic arteriovenous connections that fail to dif-ferentiate properly into arteriolar, capillary, and venular channels (33). These persistent con-


cerebral, 603 Angiography basal projection in cerebral angiography, 596 clinical usefulness of magnification in cerebral angiographic diagnosis, 498 diagnosis of extradural hematoma of posterior fossa, 603 elucidation of caus e raised intracranial pressur by, 502 foam cell arteritis of the brain, 232 hemodynamics of arterial venous

LABORATORY SCIENCES Adaptations and Deficits in the Vestibulo

aging. Serial axial and sagittal T1-weighted and T2-weighted MR images with gadolinium enhancement were obtained (slice thickness, 5 mm) for all patients younger than 50 years. In addition, MR imaging was performed on all patients with pupillary involvement; if the MR image was normal, cerebral angiography was performed. EYE MOVEMENT RECORDINGS

Anterior Cranial Fossa Dural Arteriovenous Fistula With

Cerebral angiography showed an anterior cranial fossa dural arteriovenous fistula (AVF) supplied by the bilateral ethmoidal arteries. A fistula was suggested on the right side, and the dural AVF drained into the superior sagittal sinus via the bilateral frontal cortical veins. Venous varix was observed at both drainage sites.

Dissecting Aneurysm of Superior Cerebellar Artery

Cerebral angiography was suggestive of vasospasm in the right superior cerebellar artery (Fig 1). The patient became more alert and responsive during the first two days. A severe headache subsequently developed and he vomited material containing blood. He died on April 3 after a cardiac arrest. Fig 2. Right cerebellar hemisphere shows

ji'l-J- ft-

We have developed a new method cf stereoscopic angiography which employs the radiographic magnification teclinique and which is based on the longitudinal magnification effect (2). The method may be described as an integrated stereo system, which produces serial stereo angiograms similar to conventional angiograms, without additional


serial direct magnification radiographic studies feasible. The x-ray tube we have used has atarget angle ofio#{176}and anom-inal focal spot size of0.25 Xo.25 mm. The rotor speed is 8,500 r.p.m.* Satisfactory exposures for cerebral angiography can be made ata40 inch focal spot film distance at 105 kvp., 75ma., and 1/20 sec., when high

rupture arterial aneurysms - BMJ

Serial angiography was performed on three patients anda qualitative relationship wasshownbetween arterial dilatation, clinical improvement, and reduced pharmacological activity. Cerebral arterial spasm (CAS), which occurs as a consequence of aneurysmal rupture and presents itself as a pronounced constriction of one or more

Experimental Intracranial Transplantation of the Omentum

magnification. On the or 附 ital side, a 4 to 5 cm length of the parent artery and vein I usually gave off four or five branches to the arcade complex (Fig. 1).

Interventional Radiology

angled vessels cerebral and visceral angiography. C2 or Cobra catheter has angled tip joined to a gentle curve celiac, renal & mesenteric arteries.

Jordan University of Science & Technology

angiography Chapter 1 2 Identify and describe the different equipment and instruments used in angiography Chapter 5, 6 2-4 To use and operate the angiography machine Chapter 5, 6 3-6 Assist the radiologist in performing the different angiographic examinations Chapter 7-12 5, 6 Read the image and identify the different anatomy and simple

High Incidence of Persistent Primitive Arteries in Moyamoya

Film screen magnification angiography was used in the early 18 patients and digital subtraction an giography in the later 32 patients. Bilateral carotid and vertebral angiography were performed in all patients, and selective external and internal carotid artery injections with stereoscopic imaging tech

Traumatic middle cerebral artery aneurysm: case report and

to 50%.16 Therefore, prompt diagnosis with cerebral angiography and sufficient surgical treatment are necessary. We present a case of traumatic middle cerebral artery aneurysm and review the literature. Case report A 66-year-old man sustained a severe head injury in a bicycle accident. The patient was knocked down by a motortruck.

Source and cause of endothelin-1 release to cerebrospinal

Cerebral angiography was performed 2 days before the SAH occurred and 7 days after surgery. Cerebrospinal fluid samples were collected directly from the basal cisterns during the operation for clot placement and by direct puncture of the cisterna magna on postoperative Day 7, when vasospasm was confirmed by angiography. Plasma

Avian Vascular Imaging: A Review

with cerebral hemorrhage diagnosed by computed tomography (CT) scan. Another case26 was diagnosed and followed by serial magnetic resonance imaging (MRI) in an African grey parrot. Vasculitis is relatively uncommon in birds and is usually associated with a systemic, infectious process. Vasculitis has occasionally been report-

Case Report Primary intrasellar melanotic ependymoma

(Figure 1). Cerebral angiography showed faint tumor staining from the bilateral inferior hypophyseal arteries but no obvious vascular lesions. The differential diagnosis included metastatic brain tumor or occult and preclinical Cushing s disease, and transsphenoidal sur-gery was performed. Intraoperative findings

Advanced Medical Imaging (RADR 2333) -

3. List the indications and contraindications for angiography in these areas. 4. Describe vessel access for these procedures. 5. Identify the contrast agent used for these procedures. 6. List the equipment required for cerebral angiography. 7. List the patient positions used during diagnostic cerebral angiography. 8.

Chapter 8:Fluoroscopic Imaging Systems

8.2.3 Electronic Magnification 8.3 Imaging Performance & Equipment Configuration 8.3.1 Contrast 8.3.2 Noise 8.3.3 Sharpness 8.3.4 Artefacts 8.4 Adjunct Imaging Modes 8.4.1 Digital Acquisition Imaging 8.4.2 Digital Subtraction Angiography (DSA) CHAPTER 8 TABLE OF CONTENTS

Echocardiographic diagnosis of papillary fibroelastoma of the

Cerebral angiography showed an occlusion toma of Patient No. 1 at low-power magnification. The tumor con- Serial surface echocardio-

Clinical Reasoning: A 7-Year-Old Boy With Acute-Onset Altered

cerebral artery occlusion, and paucity of posterior left middle cerebral branches (figure, A C). Continuous video EEG was without epileptiform activity. Right thigh plain films and MRI were suspicious for osteosarcoma vs Ewing sarcoma. Initial laboratory studies included mild transaminase elevations (as-

Quantitative Analysis of Intraoperative Indocyanine Green

ta collected during ICG angiography are usually interpreted qualitatively. In this study, quantitative analysis of ICG angiogram was attempted. Materials and Methods: ICG VA, performed during aneurysm surgery was analyzed retrospectively. The angiogram was captured serially in reg-ular time interval. The stacked images were then fed into an

Enlargementofthe thirdventricle and hyponatraemia in

001). Serial CTscansweredonein 113 patients. In25 of the 44 patients the CTscan showed an enlarged third ventricle at the time of hyponatraemia com-paredwith 26ofthe 69patients whomaintained nor-mal sodium (X2 test, p <0-05). The relationship between enlargement ofthe third ventricle and hyponatraemia remained after adjust-

Decrease in Circulating Dendritic Cell Precursors in Patients

at a magnification of 100x. Cells were digitally counted in random areas (0.1mm2)ineachplaqueregionusing digital image processing software (Axiovision, Zeiss, Jena, Germany). For each quantification, the colour threshold for immunostained cells was manually adjusted until the computerized detection matched the visual interpretation.

Volume Subject Index - AHA/ASA Journals

Direct serial magnification angiography applied to cerebral aneurysms, 411 Disappearing carotid defects, 258 Electromagnetic rheoangiometry: an extension of selective an-giography, 409 Experimental cerebral vasospasm: comparison of perfusion deficits with angiography, 288 Impact of computed tomography on utilization of cerebral angiograms, 55

Thirteen-year follow-up of parasellar intravascular papillary

(Fig. 1). Cerebral angiography revealed a massive tumor blush from the internal and external carotid arteries. First Operation Staged operations were planned such that a transcrani-al approach would be followed by a transsphenoidal ap-proach. Right frontotemporal craniotomy with an extradu - ral approach was initially performed to debulk the mass.

Detection of Vasospasm following Subarachnoid Hemorrhage

Correlation (R = 0.82) of middle cerebral artery vessel dtamet~r seen on ang10~ram and TCD velocities was performed on 20 patients. We conclude that TCD 1s a useful techmque in the diagnosis of vasospasm following subarachnoid hemorrhage. Introduction The most common cause of spontaneous subarach­ noid hemorrhage (SAH) is rupture of a cerebral

A case of meningo-vascular syphilis associated with bilateral

B) and a MR-angiography (MRA) revealed two aneurysms occurring at both anterior cerebral arteries (ACAs) (Fig. 1., C-D). Microbiological and histopathological data proved consistent with the hypothesis of meningovascular syphilis (Fig. 2., A-F). The patient was treated with antibiotic therapy. Follow-up at 4 months did show a stable clinical


kinaseonadmissionorduringlater serial mea-surements. Cardiac output measured byther-modilution was within the normal range (5-6 I/min) as were pulmonary artery wedge pressure (10mmHg)andpulmonary-systemic vascular resistance (72 Cranial computed tomography excluded cerebral haemorrhage, masses, and cerebral oedema.