Comparison Between Ultrasonography and Magnetic Resonance Imaging in Achilles Tendon

2021 ◽  
Vol 11 (8) ◽  
pp. 2062-2066
Author(s):  
Jianhua Ying ◽  
Gusztáv Fekete
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Achilles Tendon ◽  
Imaging Techniques ◽  
Effective Means ◽  
Resonance Imaging ◽  
The Us ◽  
Diagnostic Role ◽  
Magnetic Resonance Imaging Mri ◽  
Tendon Pathology

Purpose: This study aims was to compared the effectiveness of Magnetic Resonance Imaging (MRI) and Ultrasonography (US) imaging techniques in the diagnosis of tendon pathology. Method: The databases search of PubMed, Scopus, and Embase extracted 567 articles for a title and abstract review. After removing and evaluating, a total of 6 articles were collected. Results and conclusion: There are three views on the diagnosis of Achilles tendon (AT) by US and MRI: US has higher sensitivity and reliability than MRI; MRI is more effective than the US, and there is a similar diagnosis result between US and MRI. It may not be necessary to distinguish between the diagnostic role of US and MRI, since US and MRI tools can be used as effective means to provide valuable information for the diagnosis and treatment of AT.

scholarly journals Perfusion Magnetic Resonance Imaging to Assess Brain Tumor Responses to New Therapies

1998 ◽  
Vol 5 (2) ◽  
pp. 115-123 ◽  
Author(s):  
Michael H. Lev ◽  
Fred Hochberg
Keyword(s):  
Magnetic Resonance Imaging ◽  
Brain Tumor ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Perfusion Mri ◽  
Perfusion Magnetic Resonance Imaging ◽  
Normal Brain ◽  
Resonance Imaging ◽  
New Therapies ◽  
Magnetic Resonance Imaging Mri

Background: Although magnetic resonance imaging (MRI) is effective in detecting the location of intracranial tumors, new imaging techniques have been studied that may enhance the specificity for the prediction of histologic grade of tumor and for the distinction between recurrence and tumor necrosis associated with cancer therapy. Methods: The authors review their experience and that of others on the use of perfusion magnetic resonance imaging to evaluate responses of brain tumors to new therapies. Results: Functional imaging techniques that can distinguish tumor from normal brain tissue using physiological parameters. These new approaches provide maps of tumor perfusion to monitor the effects of novel compounds that restrict tumor angiogenesis. Conclusions: Perfusion MRI not only may be as effective as radionuclide-based techniques in sensitivity and specificity in assessing brain tumor responses to new therapies, but also may offer higher resolution and convenient co-registration with conventional MRI, as well as time- and cost-effectiveness. Further study is needed to determine the role of perfusion MRI in assessing brain tumor responses to new therapies.

scholarly journals Reasons for discordances between ultrasonography and magnetic resonance imaging in the evaluation of the ankle, hindfoot and heel of the patients with rheumatoid arthritis

2019 ◽  
Vol 21 (4) ◽  
pp. 405 ◽  
Author(s):  
Oana Șerban ◽  
Daniela Fodor ◽  
Iulia Papp ◽  
Mihaela Cosmina Micu ◽  
Dan Gabriel Duma ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Disease Activity ◽  
Activity Index ◽  
Imaging Techniques ◽  
Disease Activity Index ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of

Aim: To compare the ultrasonography (US) performance with magnetic resonance imaging (MRI) in identifying pathology in ankles, hindfeet and heels of rheumatoid arthritis (RA) patients and to evaluate the reasons for discordances between the two imaging methods.Material and methods: RA patients were enrolled and evaluated using the Clinical Disease Activity Index (CDAI) and the Disease Activity Score 28 with C-reactive Protein (DAS28-CRP). The ankle (tibiotalar joint, tendons), hindfoot (talonavicular, subtalar joints) and heel of the most symptomatic or dominant foot (for the asymptomatic patient)were evaluated by two pairs of examiners using US and contrast-enhanced MRI.Results: Totally, 105 joints, 245 tendons and 35 heels in 35 patients [mean age 59.2±11.25 years old, median disease duration 36 (16.5-114), mean CDAI 19.87±12.7] were evaluated. The interobserver agreements between the two sonographers, and the two radiologists were good and very good (k=0.624-0.940). The overall agreement between US and MRI was very good for subcalcaneal panniculitis (k=0.928, p<0.001), moderate for synovitis (k=0.463, p<0.001) and tenosynovitis (k=0.514, p<0.001), fair for osteophytes (k=0.260, p=0.004), and poor for erosions (k=0.063, p=0.308) and heel’s structures. MRI found more erosions, synovitis, osteophytes,tenosynovitis and retrocalcaneal bursitis, but US found more enthesophytes and plantar fasciitis. Many of the discordancesbetween the two imaging techniques have explanations related to the technique itself or definition of the pathologic findings.Conclusions: US is comparable to MRI for the evaluation of ankle, hindfoot and heel in RA patients and discordances in theinterpretation of the pathological findings/normal structures must be carefully analyzed.

scholarly journals Magnetic resonance imaging of salivary glands

2019 ◽  
Author(s):  
Danielle Ayumi Nishimura ◽  
Ana Luiza Esteves Carneiro ◽  
Kaisermann Costa ◽  
Wladimir Gushiken de Campos ◽  
Jefferson Xavier de Oliveira ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Salivary Glands ◽  
Imaging Techniques ◽  
Neck Region ◽  
Evaluation Instrument ◽  
Resonance Imaging ◽  
Tissue Contrast ◽  
Excellent Method ◽  
Magnetic Resonance Imaging Mri

Salivary glands tumors account for 2-5% of tumors in the head and neck region, possibly being benign or malignant. Magnetic resonance imaging (MRI) presents high soft tissue contrast resolution, thus being an excellent method for salivary gland analysis. The objective of this literature review is to analyze MRI as an evaluation instrument for the diagnosis of salivary glands lesions. Compared to other imaging techniques, MRI can better evaluate the relationship between adjacent anatomical structures, presenting greater sensitivity and specificity.

Imaging of the rearfoot

1999 ◽  
Vol 89 (6) ◽  
pp. 292-301 ◽  
Author(s):  
S Yozsa ◽  
B Lehnert ◽  
D Resnick
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Diagnostic Imaging ◽  
Achilles Tendon ◽  
Plantar Fasciitis ◽  
Bone Scanning ◽  
Resonance Imaging ◽  
Radionuclide Bone Scanning ◽  
Tendon Pathology

The authors review various pedal conditions affecting the rearfoot, including plantar fasciitis, Achilles tendon pathology, fractures, arthritides, coalitions, and tumors. Various diagnostic imaging modalities such as routine radiography, radionuclide bone scanning, computed tomography, and magnetic resonance imaging are discussed.

scholarly journals Magnetic Resonance Imaging of Rectal Cancer

2019 ◽  
Vol 02 (01) ◽  
pp. 018-032
Author(s):  
Ekta Maheshwari ◽  
Gitanjali Bajaj ◽  
Kedar Jambhekar ◽  
Tarun Pandey ◽  
Roopa Ram
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Imaging Techniques ◽  
Postoperative Recurrence ◽  
Response To Therapy ◽  
Resonance Imaging ◽  
Primary Rectal Cancer ◽  
Magnetic Resonance Imaging Mri

AbstractHigh-resolution magnetic resonance imaging (MRI) plays a pivotal role in the pretreatment assessment of primary rectal cancer. The success of this technique depends on obtaining good-quality high-resolution T2-weighted images of the primary tumor, orthogonal to rectal lumen. The goal of magnetic resonance staging is to identify patients who will benefit from neoadjuvant therapy prior to surgery to minimize postoperative recurrence and planning of optimal surgical approach. MRI also facilitates optimal identification of important prognostic factors, which improves both treatment selection and posttreatment follow-up. The objective of this article is to review the existing literature and provide a concise update on various aspects of rectal cancer imaging, discuss the current role of advanced imaging techniques such as diffusion-weighted and perfusion imaging in the evaluation of rectal cancer, and to assess response to therapy.

Ruptured aneurysm of noncoronary sinus of valsalva: demonstration with magnetic resonance imaging

2008 ◽  
Vol 49 (8) ◽  
pp. 889-892 ◽  
Author(s):  
T. C. Dincer ◽  
I. Basarici ◽  
C. Calisir ◽  
A. Mete ◽  
C. Ermis ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Sinus Of Valsalva ◽  
Resonance Imaging ◽  
Conventional Angiography ◽  
Rare Lesion ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Diagnostic Importance

There are few published reports regarding imaging findings of sinus of Valsalva aneurysms (SVA) with magnetic resonance imaging (MRI). We present an unusual form of ruptured SVA, emphasizing the diagnostic importance of MRI among a range of imaging techniques. This case report describes a case of idiopathic (thought to be congenital in origin), acutely symptomatic ruptured noncoronary SVA diagnosed by MRI and confirmed with conventional angiography and surgery. MRI accurately showed aneurysm size, location, and rupture into the right atrium and provided valuable information about this rare lesion.

scholarly journals AB0007 VALUE OF ULTRASOUND IN ASSESSMENT OF ACTIVE SACROILIITIS IN PATIENTS WITH AXIAL SPONDYLOARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1307.3-1307
Author(s):  
M. Chen ◽  
S. M. Dai
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Axial Spondyloarthritis ◽  
Resonance Imaging ◽  
Predictive Values ◽  
Significant Difference ◽  
The Us ◽  
Active Sacroiliitis ◽  
Magnetic Resonance Imaging Mri ◽  
Research Consortium

Background:The inflammatory of the sacroiliac joints (SIJs) called sacroiliitis, is a characteristic of axial Spondyloarthritis (axSpA). The detection of sacroiliitis is meaningful to prevent irreversible changes. The tool of assessment of sacroiliitis including radiographs, computed tomography (CT) and magnetic resonance imaging (MRI). Ultrasound (US) has also been used in the evaluation of sacroiliitis in recent years.Objectives:We aimed to evaluate the value of US in the assessment of active sacroiliitis in axSpA patients.Methods:Fifty-one patients fulfilling Assessment of SpondyloArthritis International Society (ASAS) 2009 criteria for the classification of axSpA were recruited1. All the patients underwent MRI and US evaluation of bilateral SIJs. MRI was performed using the sequences of T1WI, T2WI and fat suppression T2WI (FS-T2WI). MRI sacroiliitis was defined according to ASAS criteria of active sacroiliitis2. The Spondyloarthritis research Consortium of Canada (SPARCC) scoring was used to evaluate the inflammatory lesions in SIJs3. US were performed by an ultrasonographer with 10 years of experience in musculoskeletal ultrasound, and resistive index (RI) value was recorded. The US sacroiliitis was defined as the presence of more flow signals at SIJ with an RI ≤ 0.75. The HLA-B27, erythrocyte sedimentation rate (ESR) and hypersensitive C-reactive protein (hsCRP) were also evaluated. Consistency rate, sensitivity, specificity, positive predictive values (PPV) and negative predictive values (NPV)for the diagnosis of sacroiliitis by US were calculated, using MRI as the gold standard.Results:Of the 51 patients, 24 were female and 27 were male. The HLA-B27 positive rate was 90.2% (46/51). The consistency rate of US and MRI sacroiliitis was 55.88 (57/102). The sensitivity and specificity of US for the diagnosis of sacroiliitis were 55.93 (33/59) and 55.81 (24/43) respectively. The PPV and NPV were 63.46 (33/52) and 48 (24/50) respectively. There was no significant difference in ESR and hsCRP between the US positive sacroiliitis and the others (P= 0.7477 and 0.2268, respectively). The SPARCC scores have no significant difference between the US positive sacroiliitis and the others (P= 0.2206). The RI was not significantly associated with the MRI SPARCC score (P=0.4236).Conclusion:US may be an optional method for preliminary screening sacroiliitis. But its reliability as a diagnostic method needs further verification.References:[1]Rudwaleit M, et al. The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection. Ann Rheum Dis. 2009; 68(6):777-83[2]Rudwaleit M, et al. Defining active sacroiliitis on magnetic resonance imaging (MRI) for classification of axial spondyloarthritis: a consensual approach by the ASAS/OMERACT MRI group. Ann Rheum Dis 2009;68(10):1520–7[3]Maksymowych WP, et al. Spondyloarthritis research Consortium of Canada magnetic resonance imaging index for assessment of sacroiliac joint inflammation in ankylosing spondylitis. Arthritis Rheum.2005;53(5):703-9.Acknowledgments:This project was supported by grants from National Natural Science Foundation of China (81900795)Disclosure of Interests:None declared

C6-P-04Tri-modal imaging techniques Cathodoluminescence (CL) - Near Infrared (NIR) and Magnetic resonance imaging (MRI) with lanthanides doped Gd2O3

Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i142.1-i142
Author(s):  
Doan Thi Kim Dung ◽  
Shoichiro Fukushima ◽  
Taichi Furukawa ◽  
Hirohiko Niioka ◽  
Masayoshi Ichimiya ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Near Infrared ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri
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