Method for interpreting iskinetic test data and MRI studies during patients ‘Rehabilitation after reconstructive shoulder joint surgery shoulder joint surgery

2021 ◽  
Vol 2 ◽  
pp. 22-33
Author(s):  
Elena Titskaya ◽  
◽  
Konstantin Simonov ◽  
Evgeny Kabaev ◽  
Alexander Matsulev ◽  
...  
Keyword(s):  
Spectral Decomposition ◽  
Shoulder Joint ◽  
Decomposition Methods ◽  
Resonance Imaging ◽  
Color Coding ◽  
Joint Surgery ◽  
Computer Visualization ◽  
Arthroscopic Shoulder Surgery ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

The results of computer visualization of the biomechanics of the shoulder joint are presented. Possibilities of using biomechanical robotic mechanotherapy, implemented using the CON-TREX complex, in the rehabilitation of patients after arthroscopic shoulder surgery. The possibilities of clarifying visualization using magnetic resonance imaging (MRI) using spectral decomposition methods (shearlet transform and contrasting with color coding) have been studied. The relationship between MRI data and CON-TREX protocols in planning and carrying out rehabilitation procedures has been shown. The relationship between MRI data and CON-TREX protocols in planning and carrying out rehabilitation procedures has been shown. A method is described that makes it possible to improve the quality and availability of MRI data when studying the biomechanics of the shoulder joint during rehabilitation.

scholarly journals METHODS OF INTERPRETATION OF DATA FROM ISOKINETIC TESTS AND MRI STUDIES DURING REHABILITATION OF PATIENTS AFTER RECONSTRUCTIVE SHOULDER JOINT SURGERY

2021 ◽  
Vol XLIV-2/W1-2021 ◽  
pp. 91-97
Author(s):  
E. M. Kabaev ◽  
Y. A. Hamad ◽  
K. V. Simonov ◽  
A. G. Zotin
Keyword(s):  
Shoulder Joint ◽  
Diagnostic Technique ◽  
Decomposition Methods ◽  
Color Coding ◽  
Restorative Treatment ◽  
Computer Visualization ◽  
Arthroscopic Shoulder Surgery ◽  
Joint Biomechanics ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

Abstract. The research results in the field of computer visualization of the shoulder joint biomechanics are presented. The possibilities of using biomechanical robotic mechanotherapy on the CON-TREX complex in the rehabilitation treatment of patients after arthroscopic shoulder surgery are shown. The possibilities of additional visualization of magnetic resonance imaging (MRI) data using spectral decomposition methods (Shearlet transform and contrasting with color coding) are studied. Experiments with the use of the proposed diagnostic technique are described. The relationship between the MRI data and CON-TREX protocols in planning and implementation of the rehabilitation procedures is demonstrated. The technique which allows to improve the quality and availability of the MRI data in the study of the shoulder joint biomechanics during restorative treatment is described.

Bone-related disorders of the jaw: A clinico-radiological diagnostic algorithm

2021 ◽  
pp. 197140092199896
Author(s):  
Ahmed Abdel Khalek Abdel Razek
Keyword(s):  
Diagnostic Algorithm ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Specific Diagnosis ◽  
Clinical Presentations ◽  
Neoplastic Lesions ◽  
Lesion Extension ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship ◽  
Ct And Mri

Bone-related disorders of the jaw (BRDJ) include a spectrum of non-neoplastic and neoplastic lesions of the maxillofacial region that have been recently classified into fibro-osseous lesions, giant cell lesions and osseous tumours. The histopathological features of BRDJ can be similar and overlie each other. Imaging is important in order to reach a specific diagnosis. However, the appearance of BRDJ on imaging is non-specific in some cases. Computed tomography (CT) and magnetic resonance imaging (MRI) are used for accurate localisation, characterisation of the tumour matrix, delineation of the lesion extension and establishment of the relation of BRDJ to the surrounding structures. Imaging is usually done to detect the relationship with the adjacent surrounding vital structures and to diagnose aggressive forms, malignant transformation and associated syndromes. The correlation of the demographic findings, the location and the clinical presentations with the imaging features are important for the diagnosis of BRDJ. The proposed clinico-radiological diagnostic algorithm with CT and MRI helps a specific diagnosis to be reached in some cases.

scholarly journals Shape matters: morphological metrics of glioblastoma imaging abnormalities as biomarkers of prognosis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lee Curtin ◽  
Paula Whitmire ◽  
Haylye White ◽  
Kamila M. Bond ◽  
Maciej M. Mrugala ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Tumor Location ◽  
Primary Brain Tumor ◽  
Resonance Imaging ◽  
Significant Relationships ◽  
Biological Phenomena ◽  
Microenvironmental Factors ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship ◽  
Standard Magnetic Resonance Imaging

AbstractLacunarity, a quantitative morphological measure of how shapes fill space, and fractal dimension, a morphological measure of the complexity of pixel arrangement, have shown relationships with outcome across a variety of cancers. However, the application of these metrics to glioblastoma (GBM), a very aggressive primary brain tumor, has not been fully explored. In this project, we computed lacunarity and fractal dimension values for GBM-induced abnormalities on clinically standard magnetic resonance imaging (MRI). In our patient cohort (n = 402), we connect these morphological metrics calculated on pretreatment MRI with the survival of patients with GBM. We calculated lacunarity and fractal dimension on necrotic regions (n = 390), all abnormalities present on T1Gd MRI (n = 402), and abnormalities present on T2/FLAIR MRI (n = 257). We also explored the relationship between these metrics and age at diagnosis, as well as abnormality volume. We found statistically significant relationships to outcome for all three imaging regions that we tested, with the shape of T2/FLAIR abnormalities that are typically associated with edema showing the strongest relationship with overall survival. This link between morphological and survival metrics could be driven by underlying biological phenomena, tumor location or microenvironmental factors that should be further explored.

Enhanced magnetic resonance imaging in multiple sclerosis

2000 ◽  
Vol 6 (5) ◽  
pp. 320-326 ◽  
Author(s):  
M Filippi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Tissue Loss ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri ◽  
The One ◽  
The Relationship

Gadolinium-enhanced magnetic resonance imaging (MRI) is very sensitive in the detection of active lesions of multiple sclerosis (MS) and has become a valuable tool to monitor the evolution of the disease either natural or modified by treatment. In the past few years, several studies, on the one hand, have assessed several ways to increase the sensitivity of enhanced MRI to disease activity and, on the other, have investigated in vivo the nature and evolution of enhancing lesions using different non-conventional MR techniques to better define the relationship between enhancement and tissue loss in MS. The present review is a summary of these studies whose results are discussed in the context of MS clinical trial planning and monitoring.

scholarly journals Modeling Tumor Cellularity in Newly Diagnosed GBMs using MR Imaging and Spectroscopy

2010 ◽  
Author(s):  
Alexandra Constantin ◽  
Sarah Nelson ◽  
Ruzena Bajcsy
Keyword(s):  
Expectation Maximization ◽  
Ex Vivo ◽  
Resonance Imaging ◽  
Tissue Samples ◽  
Imaging And Spectroscopy ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of ◽  
Quantitative Definition ◽  
The Relationship

In this paper, we analyze the relationship between parameters of brain tumors obtained through in vivo magnetic resonance imaging (MRI), in vivo magneticnresonance spectroscopy (MRS), and ex vivo immunohistochemistry (IHC). The goal of our project is to provide a quantitative definition of tumor cellularity based on the in vivo parameters. Biopsy samples obtained from previously untreated patients with a diagnosis of GBM are used to find the link between imaging parameters at the specific biopsy locations and IHC parameters from the corresponding tissue samples. A functional tree (FT) model of tumor cellularity is learned from the in vivo parameters and the remaining histological parameters. The tumor cellularity model is then tested on examples which contain only in vivo parameters, by first estimating the remaining IHC parameters by applying the Expectation Maximization (EM) algorithm, and then using the complete parameter vector for classification.

Bicaudate Index on Magnetic Resonance Imaging: Effects of Normal Aging

1994 ◽  
Vol 7 (1) ◽  
pp. 13-17 ◽  
Author(s):  
P. Murali Doraiswamy ◽  
Linda Patterson ◽  
Chul Na ◽  
Mustafa M. Husain ◽  
Orest Boyko ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cerebral Atrophy ◽  
Normal Aging ◽  
Resonance Imaging ◽  
Huntington's Chorea ◽  
Caudate Nuclei ◽  
Computed Tomographic ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

The bicaudate and bifrontal indices have been used in prior computed tomographic studies to investigate atrophy of the caudate nuclei in patients with Huntington's chorea and cerebral atrophy. However, the relationship between these indices and caudate volume has not been documented previously. In this study, we used high-field magnetic resonance imaging (MRI) to determine the effects of normal aging on the bicaudate and bifrontal indices and to study the relationship between these indices and caudate volume. The subjects were 49 normal volunteers, aged 22 to 82 years, who were without any significant neurologic or psychiatric disorders. Age was positively correlated with bicaudate index ( r = .59; P < .0001) and bifrontal index ( r = .40; P < .0047). Age was negatively correlated with caudate nuclei volume ( r = -.47; P < .0005). Caudate volume was negatively correlated with bicaudate ( r = -.27; P < .06) and bifrontal ( r = -.31; P < .03) indices. These findings are consistent with prior reports of caudate nuclei degeneration with increasing age. Linear and volumetric caudate measurements with MRI may prove useful in the investigation of caudate nuclei function in the neuromotor decline with normal aging and in disorders such as Huntington's chorea.

Fibroproliferative Neuromas May Occur After Iatrogenic Injury for Lipomatosis of Nerve

Neurosurgery ◽  
2013 ◽  
Vol 73 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Mark A. Mahan ◽  
Kimberly K. Amrami ◽  
Robert J. Spinner
Keyword(s):  
Skin Incision ◽  
Iatrogenic Injury ◽  
Nerve Transection ◽  
Resonance Imaging ◽  
Unique Type ◽  
Postoperative Mri ◽  
Lipomatosis Of Nerve ◽  
High Incidence ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

Abstract BACKGROUND: Lipomatosis of nerve (LN) is a condition associated with nerve-territory overgrowth. We have noted a unique type of neuroma at sites of LN injury; the neuroma extends beyond the epineurium, enhances, and appears to enlarge over time. OBJECTIVE: We sought to understand the relationship between fibroproliferative scarring and surgery performed on the nerve. METHODS: A review of the searchable records for LN at our institution found 52 cases, confirmed by pathology or pathognomonic appearance on magnetic resonance imaging (MRI). Clinical histories were reviewed to categorize the surgeries performed by the degree of iatrogenic injury to the nerve. Postoperative MRI was performed in 22 of the 46 patients who had surgery, which was then retrospectively reviewed for fibroproliferative neuromas. RESULTS: Complex and masslike neuromas were found on MRI, correlating with the degree of iatrogenic injury to the nerve. These fibrous neuromas proliferated beyond the epineurium, disrupted fascicular architecture, were contrast enhancing when contrast was administered, indicative they were unique and unlike stump or traction neuromas. Of the 8 patients who underwent surgery involving nerve decompression alone, none developed fibroproliferative neuromas. Of the 7 patients who underwent surgery involving nerve debulking, fibroproliferative neuromas developed in 4. Of the 11 patients who underwent surgery involving nerve transection, all developed fibroproliferative neuromas (P &lt; .001). There was also a high incidence of hypertrophic scarring of the skin incision (21.3%). CONCLUSION: Surgical injury of LN appears to be strongly associated with the development of fibroproliferative neuromas. It is possible that the pathological overgrowth stimulus associated with LN promotes exuberant scar formation.

scholarly journals Structural Changes in the Cerebrum, Cerebellum and Corpus Callosum in Migraine Patients

2016 ◽  
Vol 39 (6) ◽  
pp. 21 ◽  
Author(s):  
Berin T Demir ◽  
Nezihe A Bayram ◽  
Zübeyde Ayturk ◽  
Hüsamettin Erdamar ◽  
Pelin Seven ◽  
...  
Keyword(s):  
Corpus Callosum ◽  
Structural Changes ◽  
Resonance Imaging ◽  
Brain Images ◽  
Control Subjects ◽  
Healthy Control ◽  
Magnetic Resonance Imaging Mri ◽  
Faculty Department ◽  
And Control ◽  
The Relationship

Purpose: The purpose of this study was to demonstrate the relationship among the cerebrum, cerebellum and corpus callosum in migraine patients. Methods: This work was conducted with cooperation of the Turgut Özal Medical Faculty, Department of Anatomy and Neurology. Migraine patients were divided into four groups: new patients; 1-5 years; 5-10 years; and, more than 10 years. All patients (n=75) and control subjects (n=20) underwent Magnetic Resonance Imaging (MRI) and brain images were processed by ONIS and Image J. Data were analyzed using the planimetric method. Results: Cerebrum, cerebellum and corpus callosum volume were calculated for all subjects. The footprints of the callosum were as follows: healthy control subjects, new patients and 1-year patients: 12.8%, 5 years: 11.7% and more than 10 years: 10.7%. The cerebrum volume was as follows: healthy control subjects: 1152 cm3, 5-10 years: 1102 cm3 and more than 10 years: 1002 cm3. Discussion: The results of our study showed atrophy in the cerebrum, cerebellum and corpus callosum of chronic migraine patients. This atrophy was greater in the patients with aura migraines. Conclusion: Our study confirmed that a migraine is an episodic disease that seriously affects the CNS.

Superolateral Hoffa's Fat Pad Edema and Trochlear Sulcal Angle Are Associated with Isolated Medial Patellofemoral Compartment Osteoarthritis

2018 ◽  
Vol 69 (4) ◽  
pp. 450-457 ◽  
Author(s):  
Sara Weintraub ◽  
Ronnie Sebro
Keyword(s):  
Sagittal Alignment ◽  
Patellofemoral Osteoarthritis ◽  
Resonance Imaging ◽  
Fat Pad ◽  
Morphometric Measurements ◽  
Patellar Tilt ◽  
Hoffa’S Fat Pad ◽  
Mri Studies ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

Purpose To evaluate whether mediopatellar plica and knee morphometric measurements obtained from magnetic resonance imaging (MRI) studies are associated with isolated medial patellofemoral osteoarthritis in young adults. Methods MRI studies from 60 patients with isolated medial patellofemoral osteoarthritis and 90 control patients with normal knee MRI studies were reviewed. The presence of mediopatellar plica, the presence of edema in the superolateral aspect of Hoffa's fat pad and suprapatellar fat pad, quadriceps and patellar tendinosis, and axial and sagittal alignment of the patellar and trochlear morphology were assessed using MRI. The relationship between mediopatellar plica, alignment, or morphology and the presence of isolated medial patellofemoral osteoarthritis was evaluated using logistic regression. Results Superolateral Hoffa's fat pad edema (odds ratio [OR] = 3.4, P = .009) and decreased trochlear sulcal angle (OR = 0.95, P = .045) were associated with increased odds of isolated medial patellofemoral osteoarthritis. Decreased lateral patellar tilt (OR = 0.93, P = .087) and patellar tendinosis (OR = 4.13, P = .103) trended toward being associated with increased odds of isolated medial patellofemoral osteoarthritis but were not statistically significant. No significant association was seen between the presence of mediopatellar plica and medial patellofemoral osteoarthritis (OR = 0.95, P = .353). Conclusions Medial patellofemoral osteoarthritis is associated with trochlear morphology and patellar alignment but not with mediopatellar plica.

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