scholarly journals Role of ultrasound in assessment of abnormalities in knee trauma in comparison to MRI

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M I Fahmy ◽  
A F Abdelghany ◽  
A H Aly ◽  
D S Farid
Keyword(s):  
Lateral Collateral Ligament ◽  
Joint Effusion ◽  
Initial Assessment ◽  
Radiology Department ◽  
Resonance Imaging ◽  
Collateral Ligament ◽  
Knee Trauma ◽  
Magnetic Resonance Imaging Mri ◽  
High Resolution Ultrasonography

Abstract Aim of the Work to assess the role of high resolution ultrasonography (US) in the evaluation and assessment of different abnormalities resulting from knee trauma compared to Magnetic resonance imaging MRI Aim and Patients and Methods 51 patients presenting with knee pain after variable degrees of knee trauma and referred to radiology department will be examined by US and MRI. Results are compared and data analysed. Results US had significant results in medial collateral ligament (MCL), menisci, quadriceps and patellar tendons, joint effusion and parameniscal cysts. Poor US results were obtained in cruciate, lateral collateral ligament (LCL) and bone injuries. Conclusion Ultrasound can be used in the initial assessment of patients after knee trauma. It has comparable results to MRI in tendons, periarticular ligaments, joint effusion and menisci assessment with still some limitations noted in the cruciate ligaments and bone injuries assessment.

Modern Imaging of Paranasal Sinuses and the Role of Limited Sinus Computerized Tomography; Considerations of Time, Cost and Radiation

1994 ◽  
Vol 73 (8) ◽  
pp. 532-546 ◽  
Author(s):  
Mahmood F. Mafee
Keyword(s):  
Paranasal Sinuses ◽  
Imaging Systems ◽  
Sinus Surgery ◽  
Radiology Department ◽  
Resonance Imaging ◽  
Complex Motion ◽  
Advantages And Disadvantages ◽  
Ostiomeatal Complex ◽  
Magnetic Resonance Imaging Mri

The modern diagnostic radiology department is equipped with a variety of medical imaging systems that can be used for evaluation of diseases of the sinonasal cavities. Each has advantages and disadvantages. The imaging examinations of the paranasal sinuses may include conventional films, complex motion tomography, computed tomography (CT) and magnetic resonance imaging (MRI). The indications for these imaging methods are reviewed, along with a discussion on the role of imaging for endoscopic sinus surgery. A summary of CT anatomy relating to the ethmoidal sinuses and ostiomeatal complex is given, as is a review of the risk of radiation for radiologic sinus imaging.

Magnetic Resonance Imaging of Pseudo-impingement of Rotator Cuff with Strength Training

2019 ◽  
Vol 1 ◽  
pp. 2-6
Author(s):  
Asad Naqvi ◽  
Timothy Ariyanayagam ◽  
Mir Akber Ali ◽  
Akhila Rachakonda ◽  
Hema N. Choudur
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Strength Training ◽  
Radiology Department ◽  
Resonance Imaging ◽  
Subacromial Space ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
Training Exercises

Objective: The objective of this study was to outline a novel unique concept of secondary impingement of the muscles, myotendons, and tendons of the rotator cuff from hypertrophy as a result of strength training exercises. Methods: In this retrospective observational study, 58 patients were referred for an magnetic resonance imaging (MRI) by the orthopedic surgeon to the radiology department over a period of 1½ years. All patients gave a history of strength training exercises and presented with clinical features of rotator cuff impingement. Results: We identified features of hypertrophy of rotator cuff muscles, myotendons, and tendons in 12 of these 58 patients. This was the only abnormality on MRI. The hypertrophy of rotator cuff muscles and tendon bulk completely filling the subacromial space to the point of overfilling and resulting in secondary compressive features. Conclusion: Rotator cuff impingement is a common phenomenon that can occur with various inlet and outlet pathological conditions. However, rotator cuff impingement may also result from muscle and tendon hypertrophy from strength training regimens. Hypertrophy of the rotator cuff can result in overfilling of the subacromial space, leading to secondary impingement, which we have termed as “pseudo-impingement.”

scholarly journals Role of Transperineal Ultrasound (TPUS) in Children with Ambiguous Genitalia

2021 ◽  
Author(s):  
Krithika Rangarajan ◽  
Manisha Jana ◽  
Nagesh Wadgera ◽  
Arun Kumar Gupta ◽  
Minu Bajpai ◽  
...  
Keyword(s):  
Gold Standard ◽  
Sex Differentiation ◽  
Ambiguous Genitalia ◽  
Transperineal Ultrasound ◽  
Transabdominal Ultrasound ◽  
Resonance Imaging ◽  
Normal Children ◽  
Genital Ambiguity ◽  
Magnetic Resonance Imaging Mri

Abstract Objectives Accurate delineation of anatomy in children with ambiguous genitalia early in life is important. This commonly involves conventional fluoroscopic genitogram (traumatic to the child) and magnetic resonance imaging (MRI) examination (involves sedation). In this study, our objectives were twofold: (1) to describe the findings on transperineal ultrasound (TPUS) in normal children and (2) to describe the findings on TPUS in children with ambiguous genitalia and correlate them with conventional genitogram. Materials and Methods TPUS was prospectively performed in 10 children without genital ambiguity (5 girls and 5 boys). Subsequently, 15 consecutive children having disorders of sex differentiation (DSDs) with genital ambiguity underwent TPUS. The presence or absence of müllerian structures was documented. Of these patients, 14 also underwent conventional genitogram as a part of routine evaluation. The gold standard was established either by comparison with surgical findings (in patients who underwent surgery) or by comparison with a combination of findings on genitogram and transabdominal ultrasound in patients who did not undergo surgery. Results In all normal children, lower urogenital tracts could be clearly delineated on TPUS. Out of the 15 children with ambiguous genitalia, TPUS could establish the presence/absence of müllerian structures in 14. This was concordant with findings on conventional genitogram/surgery. In one patient, müllerian structure was missed on TPUS but demonstrated on genitogram. In two children, TPUS showed the müllerian structure, which was not seen on genitogram. When both the controls and the cases were combined, TPUS had an accuracy of 95% and specificity of 100% in the detection of müllerian structures. Conclusion TPUS is feasible and accurate in demonstration of lower urogenital tract anatomy in children with DSDs having ambiguous genitalia. It can be performed without sedation, and is suitable for use as a screening modality in children with ambiguous genitalia.

Quantificationofwallshearstressinlargebloodvesselsusingmagneticresonanceimaging

2019 ◽  
Author(s):  
  Нина Юрьевна Шокина ◽  
  Габриэль Тешнер ◽  
  Андреас Бауэр ◽  
  Камерон Тропеа ◽  
  Херберт Эггер ◽  
...  
Keyword(s):  
Cardiovascular Mri ◽  
Resonance Imaging ◽  
Noninvasive Measurements ◽  
Potential Biomarker ◽  
Flowing Blood ◽  
Fully Automatic ◽  
Nonlinear Regression Method ◽  
Magnetic Resonance Imaging Mri ◽  
Blood Flow Velocities

Напряжение сдвига на стенке количественно определяет силу трения течения крови о стенки сосудов. Магнитнорезонансная томография (МРТ) позволяет проводить неинвазивные измерения скорости течения крови, которая требуется для вычисления напряжения сдвига на стенке. В статье представлено введение в квантификацию напряжения сдвига на стенках больших кровеносных сосудов с помощью МРТ. Рассмотрены роль напряжения сдвига на стенке как потенциального биомаркера сердечнососудистых заболеваний, сердечнососудистая МРТ, методы квантификации напряжения на стенке с помощью МРТ, их точность и валидация. В качестве примера представлен универсальный метод нелинейной регрессии для квантификации напряжения сдвига на стенке с помощью МРТ для полностью развившихся турбулентных течений в трубах. Новый, полностью автоматический и быстрый локальный метод даёт точные оценки независимо от пространственного разрешения и может служить надёжным эталонным методом для валидации более обобщённых методов оценки напряжения сдвига на стенке перед их клиническим применением. Wall shear stress (WSS) quantifies the frictional force that flowing blood exerts on a vessel wall. Magnetic Resonance Imaging (MRI) enables noninvasive measurements of blood flow velocities that are needed for WSS computation. An introduction into MRIbased WSS quantification in large blood vessels is presented. The possible role of WSS as a potential biomarker in cardiovascular diseases, cardiovascular MRI, MRbased WSS quantification methods, and their accuracy and validation are considered. As an example, the generic nonlinear regression method for MRIderived WSS quantification in fully developed turbulent stationary pipe flows is presented. The new method is a fully automatic and fast local WSS estimator, which produces accurate estimates independent from the spatial resolution of the measurement and may serve as a reliable reference for validation of more generic WSS estimators prior to their clinical applications.

Magnetic Resonance Imaging in Gynecological Oncology

2009 ◽  
Vol 19 (2) ◽  
pp. 186-193 ◽  
Author(s):  
Vanessa N. Harry ◽  
Heather Deans ◽  
Emma Ramage ◽  
David E. Parkin ◽  
Fiona J. Gilbert
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Early Assessment ◽  
Contrast Enhanced ◽  
Crucial Information ◽  
Magnetic Resonance Imaging Mri ◽  
Indispensable Tool ◽  
Improving Patient Care

Magnetic resonance imaging (MRI) has become an indispensable tool in the assessment of malignant disease. With increasingly sophisticated systems and technical advancements, MRI has continued to expand its role in providing crucial information regarding cancer diagnosis and management. In gynecological malignancies, this modality has assumed greater responsibility, particularly in the evaluation of cervical and endometrial cancers. In addition to conventional imaging, innovative techniques such as dynamic contrast-enhanced MRI and diffusion-weighted MRI show promise in offering early assessment of tumor response. This paper reviews the current role of MRI in gynecological cancers and highlights the potential of novel techniques in improving patient care.

scholarly journals Brain and Spinal Cord MRI in Multiple Sclerosis: an Update

2017 ◽  
Vol 01 (04) ◽  
pp. E294-E306 ◽  
Author(s):  
Mike Wattjes ◽  
Peter Raab
Keyword(s):  
Multiple Sclerosis ◽  
Quantitative Mri ◽  
Central Vein ◽  
Resonance Imaging ◽  
Ultra High Field ◽  
Important Differential Diagnosis ◽  
Magnetic Resonance Imaging Mri ◽  
Near Future ◽  
Brain And Spinal Cord

AbstractMagnetic resonance imaging (MRI) plays an important role in the diagnosis of multiple sclerosis and has been incorporated into the McDonald diagnostic criteria for MS. In particular, for the exclusion of important differential diagnosis and comorbidities, new MRI markers have been established such as the “central vein sign”. In addition to diagnostic purposes, the role of MRI in MS monitoring is becoming increasingly important, particularly for pharmacovigilance. This includes treatment efficacy monitoring, prediction of treatment response and safety monitoring. Quantitative MRI methods and ultra-high-field MRI offer the opportunity for the quantitative assessment of damage in normal-appearing brain tissue. However, the standardization of these techniques with the goal of implementation in clinical routine will be one of the major challenges in the near future.

scholarly journals Imaging of larynx: Diagnostic value of computed tomography and magnetic resonance imaging

2009 ◽  
Vol 56 (3) ◽  
pp. 39-44
Author(s):  
R.M. Maksimovic ◽  
B.A. Banko ◽  
J.P. Milovanovic
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Regional Lymph Node ◽  
Diagnostic Value ◽  
Resonance Imaging ◽  
Precise Diagnosis ◽  
Node Metastases ◽  
Magnetic Resonance Imaging Mri

Computed tomography (CT) and magnetic resonance imaging (MRI) are enabling more precise diagnosis and treatment planning in patients with diseases of the larynx. The aim of this article is to describe the role of these methods in assessment of the laringeal diseases and key local anatomic characteristics important for spread of the disease. CT and MRI have a valuable contribution to the staging of the tumors due to the possibility to show the relationship to the ventricular complex, involvement of the subumucosal spaces, defining craniocaudal and anterposterior extension, laringeal cartilage invasion, as well as regional lymph node metastases.

The interleukin-1 gene family in multiple sclerosis susceptibility and disease course

2003 ◽  
Vol 9 (6) ◽  
pp. 535-539 ◽  
Author(s):  
Tineke Hooper-van Veen ◽  
Hans M Schrijver ◽  
Antoon Zwiers ◽  
J Bart A Crusius ◽  
Dirk L Knol ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Gene Polymorphisms ◽  
Interleukin 1 ◽  
Progression Rate ◽  
Disease Course ◽  
Resonance Imaging ◽  
Multiple Sclerosis Susceptibility ◽  
Specific Allele ◽  
Magnetic Resonance Imaging Mri

Multiple sclerosis (MS) is a chronic disease of presumed autoimmune origin with a considerable polygenic influence. We have previously observed that a specific allele combination in genes of the interleukin-1 (IL-1) family influenced the progression rate in MS. We have considerably expanded our patient population (492 MS patients and 228 controls). In the present study, we investigated the role of the IL- 1A - 889, IL-1B - 511, IL-1B+3953 and IL-1RN VNTR gene polymorphisms in MS. In addition, we performed preliminary analyses on longitudinal magnetic resonance imaging (MRI) data. We found no associations between the polymorphisms and susceptibility to MS or clinical features. In addition, we observed no significant effect of the polymorphisms on brain or lesion volumes, Based on our data and those from the literature, one can conclude that there is currently no evidence to support a role for the IL-1 genes in MS.

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