scholarly journals Subclavian Artery Flow Dynamics Evaluated by Analytical Intraoperative Indocyanine Green Videoangiography During Surgical Treatment of Thoracic Outlet Syndrome: A Case Series

2022 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Naoki Kato ◽  
Tohru Terao ◽  
Takuya Ishii ◽  
Emiko Saito ◽  
Yusuke Hirokawa ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Indocyanine Green ◽  
Subclavian Artery ◽  
Thoracic Outlet Syndrome ◽  
Case Series ◽  
Flow Dynamics ◽  
Indocyanine Green Videoangiography ◽  
Artery Flow

scholarly journals Blood Flow Assessment of Arteriovenous Malformations Using Intraoperative Indocyanine Green Videoangiography

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Naoki Kato ◽  
Vincent Prinz ◽  
Julius Dengler ◽  
Peter Vajkoczy
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Indocyanine Green ◽  
Region Of Interest ◽  
Flow Dynamics ◽  
Flow Index ◽  
Indocyanine Green Videoangiography ◽  
Blood Flow Index ◽  
High Resolution Images ◽  
The Individual

Intraoperative indocyanine green (ICG) videoangiography is widely used in patients undergoing neurosurgery. FLOW800 is a recently developed analytical tool for ICG videoangiography to assess semi-quantitative flow dynamics; however, its efficacy is unknown. In this study, we evaluated its functionality in the assessment of flow dynamics of arteriovenous malformation (AVM) through ICG videoangiography under clinical settings. ICG videoangiography was performed in the exposed AVM in eight patients undergoing surgery. FLOW800 analysis was applied directly, and gray-scale and color-coded maps of the surgical field were obtained. After surgery, a region of interest was placed on the individual vessels to obtain time-intensity curves. Parameters of flow dynamics, including the maximum intensity, transit time, and cerebral blood flow index, were calculated using the curves. The color-coded maps provided high-resolution images; however, reconstruction of colored images was restricted by the depth, approach angle, and brain swelling. Semi-quantitative parameters were similar among the feeders, niduses, and drainers. However, a higher cerebral blood flow index was observed in the feeders of large AVM (>3 cm) than in those of small AVM (P < 0.05). Similarly, the cerebral blood flow index values were positively correlated with the nidus volume (P < 0.01). FLOW800 enabled visualization of the AVM structure and safer resection, except in case of deep-seated AVM. Moreover, semi-quantitative values in the individual vessels through using ICG intensity diagram showed different patterns according to size of the AVM. ICG videoangiography showed good performance in evaluating flow dynamics of the AVM in patients undergoing surgery.

Venous sacrifice in neurosurgery: new insights from venous indocyanine green videoangiography

2011 ◽  
Vol 115 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Paolo Ferroli ◽  
Francesco Acerbi ◽  
Giovanni Tringali ◽  
Erminia Albanese ◽  
Morgan Broggi ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Collateral Circulation ◽  
Flow Direction ◽  
Flow Dynamics ◽  
Neurosurgical Procedures ◽  
Indocyanine Green Videoangiography ◽  
Venous Flow ◽  
Specific Test ◽  
Time Flow ◽  
Anastomotic Circulation

Object The purpose of this paper is to evaluate whether venous indocyanine green (ICG) videoangiography has any potential for predicting the presence of a safe collateral circulation for veins that are at risk for intentional or unintentional damage during surgery. Methods The authors performed venous ICG videoangiography during 153 consecutive neurosurgical procedures. On those occasions in which a venous sacrifice occurred during surgery, whether that sacrifice was preplanned (intended) or unintended, venous ICG videoangiography was repeated so as to allow us to study the effect of venous sacrifice. A specific test to predict the presence of venous collateral circulation was also applied in 8 of these cases. Results Venous ICG videoangiography allowed for an intraoperative real-time flow assessment of the exposed veins with excellent image quality and resolution in all cases. The veins observed in this study were found to be extremely different with respect to flow dynamics and could be divided in 3 groups: 1) arterialized veins; 2) fast-draining veins with uniform filling and clear flow direction; and 3) slow-draining veins with nonuniform filling. Temporary clipping was found to be a simple and reversible way to test for the presence of potential anastomotic circulation. Conclusions Venous ICG videoangiography is able to reveal substantial variability in the venous flow dynamics. “Slow veins,” when they are tributaries of bridging veins, might hide a potential for anastomotic circulation that deserve further investigation.

Indocyanine Green Videoangiography in the Surgical Treatment of Spinal Dural Arterovenous Fistula: A Useful Application

2019 ◽  
Vol 122 ◽  
pp. 508-511 ◽  
Author(s):  
Sergio Paolini ◽  
Rocco Severino ◽  
Giovanni Cardarelli ◽  
Paolo Missori ◽  
Marcello Bartolo ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Indocyanine Green ◽  
Indocyanine Green Videoangiography

Thoracic outlet syndrome affecting high-performance musicians playing bowed string instruments

Vascular ◽  
2016 ◽  
Vol 25 (3) ◽  
pp. 329-332 ◽  
Author(s):  
Christopher J Demaree ◽  
Kevin Wang ◽  
Peter H Lin
Keyword(s):  
Surgical Treatment ◽  
Upper Extremity ◽  
High Performance ◽  
Thoracic Outlet Syndrome ◽  
Case Series ◽  
Neurovascular Compression ◽  
String Instruments ◽  
Shoulder Region ◽  
Upper Extremity Musculoskeletal Disorders ◽  
First Rib Resection

Thoracic outlet syndrome, a condition due to neurovascular compression in the upper shoulder region, can be caused by chronic repetitive activity of the upper extremities. Studies have linked upper extremity musculoskeletal disorders to high-performance musicians who play bowed string instruments such as the violin or viola. We report herein a case series of five elite musicians, including three violinists and two violaists, who developed neurogenic thoracic outlet syndrome following years of intense practice. Successful surgical treatment including first rib resection, scalenectomy, and brachial plexus neurolysis was performed in all patients. All patients were able to resume their musical career following surgical treatment. Our report represents the first description of thoracic outlet syndrome in high-performance bowed string instrumentalists. Clinicians should be aware of thoracic outlet syndrome as a differential diagnosis when treating string instrumentalists with upper extremity musculoskeletal ailments.

Use of microscope-integrated near-infrared indocyanine green videoangiography in the surgical treatment of intramedullary cavernous malformations: report of 8 cases

2013 ◽  
Vol 18 (5) ◽  
pp. 443-449 ◽  
Author(s):  
Toshiki Endo ◽  
Misaki Aizawa-Kohama ◽  
Kenichi Nagamatsu ◽  
Kensuke Murakami ◽  
Akira Takahashi ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Indocyanine Green ◽  
Near Infrared ◽  
Complete Removal ◽  
Clinical History ◽  
Mri Findings ◽  
Indocyanine Green Videoangiography ◽  
Cavernous Malformations ◽  
Venous Anomalies ◽  
Venous Structure

Object The characteristics and efficacy of indocyanine green (ICG) videoangiography in cavernous malformation (CM) have not been fully elucidated. The purpose of this paper is to examine the potential utility of ICG videoangiography in the surgical treatment of intramedullary CMs. Methods The authors conducted a retrospective review of 8 cases involving 5 men and 3 women who had undergone surgery for intramedullary CM between January 2008 and July 2011. All patients were evaluated by means of MRI. The MRI findings and clinical history in all cases suggested intramedullary CM as a preoperative diagnosis. In 2 of 8 cases, dilated venous structures associated with CMs were demonstrated. In one of these cases, there were coexisting extramedullary CMs. Intraoperatively, ICG fluorescence was observed for 5 minutes using microscope-integrated videoangiography. Results In all 8 cases, intra- and extramedullary CMs were seen as avascular areas on ICG videoangiography. Indocyanine green videoangiography helped surgeons to localize and predict margins of the lesions before performing myelotomy. Importantly, in the cases with associated venous anomalies, ICG videoangiography was useful in delineating and preserving the venous structures. In extramedullary CMs located dorsal to the spinal cord, gradual ICG infiltration was seen, starting at 110 seconds and maximal at 210 seconds after injection. Postoperative MRI confirmed total removal of the lesions in all cases, and subsequent recovery of all patients was uneventful. Conclusions Indocyanine green videoangiography provided useful information with regard to the detection of lesion margins by demonstrating intramedullary CMs as avascular areas. In cases associated with venous anomalies, ICG contributed to safe and complete removal of the CMs by visualizing the venous structure. In extramedullary CMs, ICG videoangiography demonstrated the characteristic of slow blood flow within CMs.

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