Low-field interventional MRI in neurosurgery: finding the right dose of contrast medium

M. Knauth; C. R. Wirtz; N. Aras; K. Sartor

doi:10.1007/pl00006047

Update of diagnostic preoperative images using low-field interventional MRI for navigation in neurosurgery: rigid-body registration

10.1117/12.597977 ◽

2005 ◽

Author(s):

Martin Kavec ◽

David Wikler ◽

Christophe L. M. Phillips ◽

Lara M. Vigneron ◽

Marc Levivier ◽

...

Keyword(s):

Rigid Body ◽

Interventional Mri ◽

Low Field

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Absence of the coronary sinus with coronary venous drainage into the main pulmonary artery

Cardiology in the Young ◽

10.1017/s1047951112001709 ◽

2012 ◽

Vol 23 (5) ◽

pp. 759-762

Author(s):

Kiyoshi Ogawa ◽

Takashi Hishitani ◽

Kenji Hoshino

Keyword(s):

Coronary Angiography ◽

Pulmonary Artery ◽

Right Ventricle ◽

Contrast Medium ◽

Coronary Arteries ◽

Coronary Sinus ◽

Main Pulmonary Artery ◽

Venous Drainage ◽

Anterior Wall ◽

The Right

AbstractWe describe the case of a 9-year-old girl demonstrating isolated absence of the coronary sinus with abnormal coronary venous drainage into the main pulmonary artery. Coronary angiography showed normal coronary arterial trees and contrast medium from both coronary arteries drained into the main pulmonary artery via an abnormal cardiac vein on the anterior wall of the right ventricle.

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Cerebral gumma

Journal of Neurosurgery ◽

10.3171/jns.1985.63.2.0301 ◽

1985 ◽

Vol 63 (2) ◽

pp. 301-303 ◽

Cited By ~ 6

Author(s):

Wen-Zern Hwang ◽

Takeshi Hasegawa ◽

Haruhide Ito ◽

Takashi Shimoji ◽

Shinjiro Yamamoto

Keyword(s):

Contrast Medium ◽

Computerized Tomography ◽

Temporal Lobe ◽

Intravenous Administration ◽

Low Density ◽

Content Type ◽

Vessel Walls ◽

The Right ◽

Fine Print

✓ A case of focal cerebral syphilitic gumma of the right temporal lobe is reported. Angiography showed moderate focal hypervascularity with stretched vessels, and irregularity of the vessel walls. Plain computerized tomography revealed an area of low density that enhanced strongly after intravenous administration of contrast medium.

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Computed tomography lymphangiography via intrametatarsal pad injection is feasible in cats with chylothorax

American Journal of Veterinary Research ◽

10.2460/ajvr.21.10.0163 ◽

2022 ◽

pp. 1-7

Author(s):

Chuan Chiang ◽

Kuan-Sheng Chen ◽

Hsien-Chieh Chiu ◽

Cheng-Shu Chung ◽

Lee-Shuan Lin

Keyword(s):

Contrast Medium ◽

Medical Records ◽

Surgical Planning ◽

Lymphatic Vessels ◽

Clinical Findings ◽

Safe Procedure ◽

Imaging Data ◽

Cisterna Chyli ◽

The Right

Abstract OBJECTIVE To evaluate the feasibility of CT lymphangiography via intrametatarsal pad injection in cats with chylothorax. ANIMALS 7 client-owned cats. PROCEDURES This was a multicenter, retrospective, descriptive study. Medical records and imaging data from 4 veterinary hospitals were reviewed to identify cats with chylothorax that had undergone intrametatarsal pad injection via CT lymphangiography. In total, 7 client-owned cats were included in the study. Signalment, history, image findings, and follow-up data were recorded. Descriptive statistics were used to analyze the success rate of thoracic duct (TD) enhancement and describe relevant clinical findings. RESULTS Enhancement of TDs was successful in 6 of the 7 cats within 5 to 15 minutes after initiating intrametatarsal pad injection under general anesthesia. Successful migration of contrast medium into the lymphatic vessels cranial to the popliteal lymph nodes was observed in all cats within 5 minutes after injection. The recommended dose of contrast medium to achieve TD enhancement was 1 mL/kg (0.5 mL/kg/pad; concentration, 350 mg of iodine/kg). Only 1 cat had mild swelling of the paws after the procedure, and it recovered quickly without pain medication; no cats experienced lameness. Similar to dogs and unlike in previously published reports, 72% of TD branches were located in the right hemithorax. CLINICAL RELEVANCE CT lymphangiography via intrametatarsal pad injection is a feasible and safe procedure for cats with chylothorax. This technique provides detailed information regarding the unique TD anatomy and cisterna chyli location. It also contributes to surgical planning.

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Pathological findings in low-field magnetic resonance imaging of the canine spine – a study of 112 patients

Polish Journal of Veterinary Sciences ◽

10.1515/pjvs-2017-0034 ◽

2017 ◽

Vol 20 (2) ◽

pp. 285-291

Author(s):

P. Holak ◽

J. Głodek ◽

M. Mieszkowska ◽

M. Jałyński ◽

Y. Zhalniarovich ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Intervertebral Disc ◽

Contrast Medium ◽

Spin Echo ◽

Pathological Changes ◽

Resonance Imaging ◽

Intervertebral Disc Disease ◽

Disc Disease ◽

Low Field

Abstract Magnetic resonance imaging (MRI) is a method of choice in diagnosing nervous system disorders. This paper presents the results of a study where selected segments of the canine spine were examined by low-field MRI in 112 patients. Images of pathological changes were obtained in spin echo (SE), fast spin echo (FSE) and hybrid contrast enhancement (3D HYCE) sequences. The cervical region of the spinal cord (C1-C5) was examined in 32 patients, the cervicothoracic region (C6-Th2)- in 14 patients, the thoracolumbar region (Th3-L3) – in 23 patients, and the lumbosacral region (L4-S3) – in 43 patients. The results were used to determine the incidence of pathological changes in different sections of the canine spine, such as intervertebral disc disease (IDD), disc desiccation, syringomyelia and changes characterized by higher uptake of the contrast medium. Intervertebral disc disease was diagnosed in 52.7% of patients and it was the most common abnormality. Disc dehydratation without protrusion or extrusion was noted in 23.2% of animals. Pathological changes with increased uptake of the contrast medium and indicative of neoplastic growth were observed in 13.4% of patients and syringomyelia was diagnosed in 9.82% of the examined animals. The proposed sequences revealed the presence of above abnormalities.

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Injection of contrast medium through a delivery sheath reveals interventricular septal vascular injury in a case of left bundle branch pacing

Journal of International Medical Research ◽

10.1177/0300060520947880 ◽

2020 ◽

Vol 48 (8) ◽

pp. 030006052094788

Author(s):

Peng Qi ◽

Xue-Xun Li ◽

Ying Tian ◽

Liang Shi ◽

Yan-Jiang Wang ◽

...

Keyword(s):

Atrial Fibrillation ◽

Contrast Medium ◽

Interventricular Septum ◽

Pacemaker Implantation ◽

Persistent Atrial Fibrillation ◽

Potential Method ◽

Alternative Technique ◽

Symptomatic Bradycardia ◽

The Right ◽

Delivery Sheath

A 70-year-old woman with symptomatic bradycardia caused by persistent atrial fibrillation and atrioventricular block was referred to our institution for pacemaker implantation. After we failed to obtain adequate His bundle capture thresholds (>2.5 V at 1.0 ms) at three pacing sites, left bundle branch pacing was attempted as an alternative technique. The tip of the 3830 lead was screwed towards the left side of the interventricular septum. Contrast medium was injected through the C315 sheath, which was placed close to the right side of the interventricular septum to determine the exact depth of the 3830 lead inside the septum. Unexpectedly, the vessels in the interventricular septum were revealed by the contrast, which showed that the lead had penetrated one of the septal vessels. To the best of our knowledge, this is the first reported case of a patient in whom injection of a contrast agent through a delivery sheath showed damage to the interventricular septal vessels. Findings from this case suggest that injection of contrast medium through a C315 sheath that is placed close to the interventricular septum is a potential method for excluding damage to interventricular septal vessels.

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Intracardiac Shunting Revealed by Angiocardiography in the Lizard Tupinambis Teguixin

Journal of Experimental Biology ◽

10.1242/jeb.130.1.1 ◽

1987 ◽

Vol 130 (1) ◽

pp. 1-12

Author(s):

K. JOHANSEN ◽

A. S. ABE ◽

J. H. ANDRESEN

Keyword(s):

Contrast Medium ◽

Right Atrium ◽

Vena Cava ◽

Sinus Venosus ◽

Pulmonary Flow ◽

Scientific World ◽

Vena Cava Superior ◽

Ventilation Pattern ◽

Contrast Medium Injection ◽

The Right

1. The central circulation in the lizard Tupinambis teguixin (Linné 1758) was studied using angiocardiographic techniques. Contrast medium was selectively injected into the vena cava superior, the sinus venosus, the right atrium, and the ventricular subcompartments [the cavum pulmonale (CP) and cavum arteriosum (CA)], following catheterization of the heart from the right jugular vein. 2. Contrast medium injection in the vena cava, sinus venosus, right atrium or CP showed that there was an exclusive and selective passage to the pulmonary circulation when injections were made during spontaneous or artificial ventilation. Contrast injection during apnoea showed various degrees of right-left shunting to the left aorta but typically not to the right aorta. There was no observable admixture from the CP to the CA. 3. When contrast medium was injected directly into the cavum arteriosum, there was clear selective filling of the right aorta and the cephalad circulation, as well as a lesser but distinct filling of the left aorta. During systole, there was no admixture from the CA to the CP, but a very slight left-right admixture was discernible during ventricular diastole. 4. The selective passage of contrast medium through the heart of Tupinambis showed a relationship to breathing in the intermittent ventilation pattern of Tupinambis. During apnoea, pulmonary flow appears to be impeded: this may reflect right-left shunting to the left aorta. This vessel becomes important in the alternation between a balance of pulmonary and systemic flow during breathing and a preference for systemic flow during apnoea. Note: I am sorry to inform the readers of this journal and the whole scientific world that the famous Professor Kjell Johansen suddenly passed away during a sojourn in France for purposes of study. We will all miss a dear friend and colleague. Reprint requests should be sent to Dr J. H. Andresen, Department of Diagnostic Radiology, Municipal Hospital of Aarhus, DK-800 Aarhus C, Denmark.

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Lateral syndrome of the medulla oblongata (Wallenberg's syndrome) as a complication of a vertebral angiography: a case report

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x1972000100008 ◽

1972 ◽

Vol 30 (1) ◽

pp. 78-83 ◽

Cited By ~ 2

Author(s):

Roberto Melaragno

Keyword(s):

Case Report ◽

Contrast Medium ◽

Vertebral Artery ◽

Medulla Oblongata ◽

Cerebral Arteries ◽

Lateral Part ◽

Direct Puncture ◽

Wallenberg’S Syndrome ◽

Wallenberg's Syndrome ◽

The Right

Case report of a female patient, 58 years old, who, due to a right homonymous hemianopsia, was submitted under general anesthesia successively to angiographies through the right carotid and vertebral arteries. At the first examination no abnormalities were evidenced, but the contrast medium did not reach the posterior cerebral artery; angiography by the right vertebral artery, with extravasation of the contrast medium into the vessel wall, visualized both posterior cerebral arteries. Immediately after the angiographic study, the patient presented the characteristic picture of the Wallenberg's syndrome caused by involvement of the right lateral part of the medulla oblongata. The evolution of the case was good, despite the residual right hemifacial neuralgic pain. An involvement of the vertebral artery, through an intramural injection of Hypaque is assumed to be the most probable pathogenic mechanism. The reported complication is considered as one more warning to prevent angiographies of the vertebral artery through direct puncture of this vessel, due to its recognized anatomical variations.

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