scholarly journals Application of Fractal Dimension and Texture Analysis to Evaluate the Effectiveness of Treatment of a Venous Lake in the Oral Mucosa Using a 980 nm Diode Laser—A Preliminary Study

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4140
Author(s):  
Mateusz Trafalski ◽  
Marcin Kozakiewicz ◽  
Kamil Jurczyszyn
Keyword(s):  
Fractal Dimension ◽  
Texture Analysis ◽  
Diode Laser ◽  
Fibrous Tissue ◽  
Vascular Lesion ◽  
Pulse Mode ◽  
Vascular Lesions ◽  
Thick Wall ◽  
Contact Mode ◽  
Venous Lake

Venous lake (VL) is a common lesion resulting from the enlargement of thin-walled veins surrounded by a thick wall of fibrous tissue. Photocoagulation is becoming one of the basic methods for treating small vascular lesions. The aim of this study was an application of texture analysis (TA) and fractal dimension analysis (FDA) to evaluate VL treatment. Twenty-three VLs were included in the study. We used a 980 nm diode laser, 6 W, 100 ms pulse mode with a 50% duty cycle. The total dose of energy was in a range from 80 J to 600 J. We used the difference of intensity algorithm for FDA and microcontrast and a co-occurrence matrix for TA. A complete therapeutic effect was achieved in 83%, and in 9%, scar formation was observed after three months. No healing was observed in 4%, and there was partial healing in 4%. No differences in FD were observed between the lesions after three months and the healthy mucosa. The fractal dimension and microcontrast of a vascular lesion are mutually coupled. FDA and TA is a useful and objective method of assessing treatment effects for venous lakes. The non-contact mode of the 980 nm diode laser is an effective and safe method for treating a VL.

scholarly journals Fractal Dimension Based Texture Analysis of Digital Images

2012 ◽  
Vol 38 ◽  
pp. 2981-2986 ◽  
Author(s):  
P. Shanmugavadivu ◽  
V. Sivakumar
Keyword(s):  
Fractal Dimension ◽  
Texture Analysis ◽  
Digital Images

Analysis of Cerebral Vascular Lesion Pools in Ischemic Stroke Based on the Analysis and the Prognostic Assessment of Risk Factors in Patients with Primary and Recurrent Ischemic Stroke

2016 ◽  
pp. 65-68
Author(s):  
Oksana Mikitey
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Ischemic Stroke ◽  
Recurrent Stroke ◽  
Significant Risk ◽  
Vascular Lesion ◽  
Assessment Tools ◽  
Vascular Lesions ◽  
Global Risk ◽  
Risk Assessment Tools

Stroke is an important medical and social problem, and stroke risk assessment tools have difficulty on the interaction of risk factors and the effects of certain risk factors with analysis by age, gender, race, because this information fully available to global risk assessment tools. In addition, these tools tend to be focused and usually do not include the entire range of possible factors contributing. The aim of the study was to conduct a comparison of brain vascular lesions pool with ischemic stroke (II) based predictive analysis and assessment of the main risk factors in patients with primary and recurrent ischemic stroke. Prognostically significant risk factors for recurrent ischemic stroke is not effective antihypertensive therapy, multiple stenoses any one pool vascular brain, duration of hypertension (AH) over 5 years and regular smoking patients (p<0.001). In the initial localization in the second vertebrobasilar recurrent stroke was significantly (p<0.05) more developed in the same pool in women than in men; and the localization of the primary carotid AI in the pool, re-developed stroke often unreliable in the same pool in women than in men.

Abstract P249: Effects of Lifestyle Changes on Metabolism and Early Vascular Lesion in Healthy People

Hypertension ◽  
2017 ◽  
Vol 70 (suppl_1) ◽  
Author(s):  
Xu Fengcheng ◽  
Yu Chaoping ◽  
Liu Tianhu
Keyword(s):  
Healthy Lifestyle ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Ankle Brachial Index ◽  
Density Lipoprotein ◽  
Vascular Lesion ◽  
Lifestyle Changes ◽  
Healthy People ◽  
Vascular Lesions ◽  
Before And After

Objective: Through propaganda and education on lifestyle change, we study the effects on metabolism and vascular lesions in healthy people. Methods: the healthy subjects that conform to the requirements, through propaganda and education on vascular health, through moderate exercise, proper control of starchy foods, low salt, low fat diet, reduce smoking and other lifestyle changes, compare changes in weight, renal function, fasting blood glucose, blood lipids and ankle brachial index (ABI), cardio ankle vascular index(CAVI) before and after lifestyle changes. Results: After lifestyle changed, the subjects’ body mass index [(23.13±3.18)kg/m 2 vs (22.67±3.36)kg/m 2 ], ABI[1.11±0.08 vs 1.09±0.09], CAVI[(7.14±1.13 ) vs (7. 01±1.18) ], serum creatinine[(84.31±22.41)umol/L vs (79.92±23.64)umol/L], blood uric acid[(337.79±102.17 )umol/L vs (328.12±88.33)umol/L], low density lipoprotein cholesterol[(2.49±0.65) mmol/L vs (2.37±0.69) mmol/L],all have good changes. Conclusion: Healthy lifestyle is good for metabolism and early vascular lesions, can improve metabolic disorder and slow the occurrence of arteriosclerosis.

Abstract 3734: Presurgical fMRI and Morbidity Outcomes in Patients with Vascular Lesions

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Andrew C Radtke ◽  
Joshua Pankratz ◽  
Ryan Holdsworth ◽  
Dovile Baniulis ◽  
Nicole Kornder ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Preoperative Planning ◽  
Binary Logistic Regression ◽  
Vascular Lesion ◽  
Vascular Lesions ◽  
Motor Deficits ◽  
Binary Logistic Regression Analysis ◽  
Language Mapping ◽  
Motor Mapping ◽  
The Relationship

Background fMRI is being increasingly used as an adjunct imaging technique for preoperative planning for patients with various brain lesions. The proximity of the lesion to eloquent cortex is a major factor in guiding surgical planning. Our group has previously reported significant association between the distance between brain tumor periphery and area of fMRI activation (Lesion-Activation Distance; LAD) and morbidity and mortality outcomes. This study investigated the relationship between vascular lesion LAD and morbidity. Methods This study was a retrospective analysis of data from patients with vascular lesions [arteriovenous malformations (AVMs) (n=49), and cavernomas (n=57)], who had received fMRI as part of their preoperative planning. The preoperative fMRI included motor mapping (n=87) and/or language mapping (n=102). The fMRI paradigms were chosen based on observed preoperative weakness (aphasia, paresis) and anticipated functional areas of the brain that may be affected by treatment. Results Multiple logistic regression analyses showed that a model that combines Age and Language LAD was a significant predictor of postoperative deficits (p= 0.04). Broca’s LAD(1-2 cm) X Age was a significant predictor of postoperative deficits (change in odds ratio (OR) =0.82, CI:0.68-0.98). The relationship between Brocas’s LAD and postoperative aphasia and Broca’s LAD and pre and postoperative aphasia trended towards significance (p = .08 and p =.07 respectively). Wernicke’s LAD, independently or combined with Age, was not a significant predictor of postoperative deficits. Binary logistic regression analysis for SMC LAD and postop deficits did not reach significance (p =.10). There were no significant differences in postoperative language or motor deficits as a function of gender or handedness. Conclusions These results suggest that both age and the proximity of a vascular lesion to language LAD are factors that can help predict postoperative outcomes, especially for Broca’s LAD. The lack of similar results when investigating the relationship between Wernicke’s LAD and postoperative deficits suggests potential brain reorganization and/or robustness of this brain region. These results have implications for the potential use of fMRI as a presurgical tool for language mapping in patients with vascular lesions.

scholarly journals Vascular dementia and the cholinergic pathways

2007 ◽  
Vol 1 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Eliasz Engelhardt ◽  
Denise Madeira Moreira ◽  
Jerson Laks
Keyword(s):  
Vascular Dementia ◽  
Therapeutic Potential ◽  
Clinical Manifestations ◽  
Vascular Cognitive Impairment ◽  
Vascular Lesion ◽  
Vascular Lesions ◽  
Behavioral Integration ◽  
Cholinergic Pathways ◽  
High Prevalence ◽  
Cholinergic Hypofunction

Abstract Vascular cognitive impairment/vascular dementia have been the subject of a large number of studies, due to their high prevalence and broad preventive and compensatory therapeutic potential. The knowledge of the cerebral anatomy correlated to the vascular territories of irrigation enables understanding of clinical manifestations, as well as classification into the several types of syndromic presentations. The central cholinergic system exercises important neuromodulatory functions on cerebral circuits related to cognitive and behavioral integration, as well as on vasomotor control related to cerebral blood flow adjustments. The acquisition of data on the anatomy of the cholinergic pathways, including the localization of the nuclei of the basal prosencephalon and the routes of their projections, established an important milestone. The knowledge of the vascular distribution and of the trajectories of the cholinergic pathways allows identification of the strategic points where a vascular lesion can cause interruption. The ensuing denervation leads to cholinergic hypofunction in the involved territories. This information proves important to better evaluate the sites of vascular lesions, emphasizing their strategic localizations in relation to the cholinergic pathways, and offering more robust foundations for treatment aiming at enhancing cholinergic activity.

Response of Vascular Lesions of the Head and Neck to Argon Laser Radiation

1983 ◽  
Vol 91 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Joseph R. DiBartolomeo
Keyword(s):  
Laser Radiation ◽  
Surgical Technique ◽  
Head And Neck ◽  
Excellent Result ◽  
Argon Laser ◽  
Vascular Lesion ◽  
Vascular Lesions ◽  
Hypertrophic Scars ◽  
Argon Ion

Argon laser radiation is used to treat congenital and acquired vascular lesions of the head and neck. Thirteen patients requiring a total of 36 treatments were followed up for a minimum of 1 year to assess the response of the vascular lesion to argon ion radiation. Of the 13 patients, 10 had an excellent result, with the lesion no longer being identifiable. Three of the patients had residual but minimal color remaining in the lesion. There were no complications or hypertrophic scars after 1 year of follow-up. The laser parameters used and the surgical technique followed are outlined.

scholarly journals Retrosigmoid Approach for Trapping and Removal of a Distal Dissecting Superior Cerebellar Artery Aneurysm in a Child

2018 ◽  
Vol 80 (S 03) ◽  
pp. S335-S338 ◽  
Author(s):  
Javier Ros de San Pedro
Keyword(s):  
Artery Aneurysm ◽  
Vascular Lesion ◽  
Retrosigmoid Approach ◽  
Vascular Lesions ◽  
Superior Cerebellar Artery ◽  
Anterior Inferior Cerebellar Artery ◽  
Unsteady Gait ◽  
Cerebellar Artery ◽  
Preoperative Magnetic Resonance ◽  
Magnetic Resonance Imaging Mri

Objectives To demonstrate the feasibility of the retrosigmoid craniotomy for surgical management of vascular lesions located in the cerebellopontine angle (CPA). Method A previously healthy 2-year-old boy presented a sudden episode of torticollis to the left while sleeping. This episode was selflimited but it occurred two more times in a 6-day span. Torticollis worsened in the upright position, caused unsteady gait and refusal to walk from the child. The preoperative magnetic resonance imaging (MRI) showed the presence of a round, heterogenous vascular lesion in the left CPA. The lesion clearly enhanced after contrast administration. The preoperative angiography demonstrated the absence of left anterior inferior cerebellar artery anterior inferior cerebellar artery (AICA), being the left superior cerebellar artery (SCA) the supplier of the left lateral cerebellum. A blurred blush on the distal left SCA was compatible with a fusiform aneurysm. A standard retrosigmoid approach was planned for trapping and removal of the aneurysm. Results Through a left retrosigmoid craniotomy the aneurysm was approached, along with the different neurovascular structures of the CPA. The aneurysm leaned on the VII, VIII nerves complex and the superior petrosal vein, while tightly attached to the lateral cerebellum. Both proximal and distal SCA segments to the aneurysm were dissected, clipped, and divided for a complete trapping. Finally, the aneurysm was completely detached and removed in a whole piece. The patient fully recovered after surgery with no relapse of his symptoms. Conclusion The retrosigmoid craniotomy is a versatile approach that permits wide exposure of all CPA structures and adequate removal of distal aneurysms located in those cerebellar arteries supplying the lateral cerebellum.The link to the video can be found at: https://youtu.be/oEVfy4goFYM.

scholarly journals Minimal Invasive Approach for Lips Venous Lake Treatment by 980 nm Diode Laser with Emphasis on the Aesthetic Results. А Clinical Series

Folia Medica ◽  
2016 ◽  
Vol 58 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Parvan P. Voynov ◽  
Georgi T. Tomov ◽  
Nonka G. Mateva
Keyword(s):  
Adverse Effects ◽  
Diode Laser ◽  
Continuous Wave ◽  
Healing Process ◽  
Basic Knowledge ◽  
Invasive Approach ◽  
Minimal Invasive Approach ◽  
Clinical Series ◽  
Aesthetic Results ◽  
Venous Lake

AbstractIntroduction: A venous lake (VL) is a vascular lesion with common occurrence in many patients, manifested as a dark blue-to-violet compressible papule, caused by dilation of venules. The main reasons for the treatment of VL are aesthetic. The haemorrhaging episodes or impairment of oral normal functions are also under considerations. Treatment of lip VL includes surgical excision, selective photocoagulation, cryotherapy, sclerotherapy and electrodessication. The high-intensity diode laser is an option. The 980 nm diode laser is selectively absorbed by haemoglobin and selectively destroys blood vessels, minimising injury to the surrounding healthy skin.Aim: The purpose of this study was to evaluate the effectiveness of diode laser in the treatment of VL lesions with the accent on the postoperative defects and aesthetic results.Methods: 35 patients aged 37 to 71 were included in this study. A 980 nm diode laser was used in noncontact mode, under local anaesthesia in continuous wave (2-3W, for 20-60s). All patients received only one procedure.Results: Healing process was completed within 2 to 4 weeks after treatment with no scarring. None of the typical adverse effects were observed in the process of healing.Conclusions: Selective photocoagulation is an effective method for treatment of VL. Lower morbidity, minimal patient discomfort and satisfactory functional and aesthetic results are favourable for patients. To optimise the results and to reduce the adverse effects, basic knowledge on lasers and laser-tissue interactions is requisite.

Comparative study of 980nm diode laser and 810nm diode laser to skin and mucosa vascular lesions and benign growths

2010 ◽  
Author(s):  
H. X. Qiu ◽  
Y. Gu ◽  
Y. Wang ◽  
J. Zeng ◽  
N. Y. Huang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Diode Laser ◽  
Vascular Lesions

An Angiomyomatous Hamartoma With Features of Vascular Transformation of Sinuses in the Mediastinal Lymph Node of a Beagle Dog

2020 ◽  
Vol 48 (8) ◽  
pp. 1017-1024
Author(s):  
Sophie Nelissen ◽  
Ronnie Chamanza
Keyword(s):  
Smooth Muscle ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Blood Vessels ◽  
Mediastinal Lymph Node ◽  
Smooth Muscle Actin ◽  
Fibrous Tissue ◽  
Vascular Lesions ◽  
Positive Staining ◽  
Beagle Dog

Two similar benign, nonneoplastic vascular lesions have been described in the lymph nodes of humans and animals: angiomyomatous hamartoma (AMH), which is characterized by the replacement of lymphoid tissue by blood vessels, smooth muscle, and fibrous tissue, and vascular transformation of sinuses (VTS), which is considered a reactive transformation of lymph node sinuses into capillary-like vascular channels. We hereby report a lesion with features common to both lesions in the mediastinal lymph nodes of a 1-year-old beagle dog in a 1-month toxicity study. Grossly, enlargement and red discoloration were observed, while microscopically, the lesion was characterized by effacement of the lymph node parenchyma with replacement by mature blood vessels, smooth muscle, and fibrous tissue, associated with lymphoid atrophy, which is consistent with AMH. However, multifocal areas of anastomosing or plexiform capillary-like channels lined by normal to slightly plump endothelium, similar to those described for VTS, were also present. Immunohistochemistry analysis revealed abundant positive staining for smooth muscle actin and endothelial cells (von Willebrand factor/factor VIII) and the absence of proliferation (Ki67). In conclusion, these lesions most likely represent a mixture of both AMH and VTS.

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