scholarly journals Features of sacral alar fatigue fractures in adolescent athletes with overuse

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Masaki Tatsumura ◽  
Fumihiko Eto ◽  
Katsuya Nagashima ◽  
Shun Okuwaki ◽  
Hisanori Gamada ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Low Back ◽  
Resonance Imaging ◽  
Young Athletes ◽  
Adolescent Athletes ◽  
Lumbar Spondylolysis ◽  
Magnetic Resonance Imaging Mri ◽  
Fatigue Fractures ◽  
Ct And Mri

AbstractThree types of sacral alar fatigue fractures are elderly, postnatal, and sport-related. They are most prevalent in athletes during adulthood; there are few reports of sacral alar fatigue fractures in young athletes. The purpose of this study was to analyze sacral alar fatigue fractures in adolescent athletes. Of the 920 patients hospitalized with low back pain, 13 were diagnosed with sacral alar fatigue fractures with magnetic resonance imaging (MRI) abnormalities. We investigated age, sex, sports discipline, span from symptom onset to consultation, laterality, complication with spondylolysis, computed tomography (CT) findings, and treatment span. The average age was 14.5 years old (8-men and 5-women). The most frequent discipline was basketball. The span to consultation was 13.2 days. The number of right-side cases was 9. Seven cases were complicated by bilateral spondylolysis. MRI abnormalities were observed in all the cases. Only two patients showed abnormal findings on CT. Averagely 67 days after treatment, participants returned to their sports. Sacral alar fatigue fractures suggest that the span from onset to consultation is short. Fracture lines are often unclear on CT, and MRI is useful for diagnosis. More than half of the cases in this study were complicated by lumbar spondylolysis.

scholarly journals Anatomy and Pathology of the Texel Sheep Larynx

2019 ◽  
Vol 6 (1) ◽  
pp. 21 ◽  
Author(s):  
Katie Waine ◽  
Ben Strugnell ◽  
John Remnant ◽  
Fiona Lovatt ◽  
Martin Green ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Upper Respiratory Tract ◽  
Resonance Imaging ◽  
Laryngeal Disease ◽  
Upper Respiratory ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Measurements ◽  
Ct And Mri

Laryngeal chondritis, or “Texel throat”, is a disease affecting the upper respiratory tract of sheep with breeds like the Texel appearing to be predisposed. Previous work suggests the conformation of these breeds of sheep may be predisposing these animals to laryngeal disease. This study evaluated the anatomy of the Texel sheep larynx and describes incidental pathology. Forty-three larynges from rams of the Texel and Bluefaced Leicester breeds of sheep were measured and photographed. A larynx from each breed was submitted for computed tomography (CT) and magnetic resonance imaging (MRI). Measurements, photography, CT, and MRI demonstrated a difference in the anatomy of the larynx between breeds and a higher proportion of Texel sheep had laryngeal lesions. This study supports the hypothesis that the anatomy of the Texel sheep could be pre-disposing the breed to laryngeal chondritis.

scholarly journals CT and MRI findings of bronchopulmonary endometriosis: a case presentation

2018 ◽  
Vol 7 (10) ◽  
pp. 205846011880116 ◽  
Author(s):  
Tomohide Sanada ◽  
Jinho Park ◽  
Masaru Hagiwara ◽  
Norihiko Ikeda ◽  
Takeshi Nagai ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Left Lung ◽  
Lung Nodules ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Case Presentation ◽  
Magnetic Resonance Imaging Mri ◽  
Ct And Mri

Intrathoracic endometriosis is classified into pleurodiaphragmatic endometriosis and bronchopulmonary endometriosis. Bronchopulmonary endometriosis is rare. Computed tomography (CT) findings of bronchopulmonary endometriosis are lung nodules, with or without cavities, or surrounding ground-glass opacities. Features vary with menstrual status. Recently, the usefulness of magnetic resonance imaging (MRI) was reported for diagnosis of intrathoracic endometriosis, but most published reports were about pleurodiaphragmatic endometriosis. We present CT and MRI findings of bronchopulmonary endometriosis in the left lung that showed a gradually enlarging nodule with enhancing area.

scholarly journals Evaluating the Efficiency of Work of the Department of Computed Tomography and Magnetic Resonance Imaging

2019 ◽  
Vol 100 (5) ◽  
pp. 278-285
Author(s):  
K. K. Osadchiy ◽  
E. A. Mershina ◽  
A. E. Bragina ◽  
V. E. Sinitsyn
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Lean Manufacturing ◽  
Image Interpretation ◽  
Resonance Imaging ◽  
Work Processes ◽  
Magnetic Resonance Imaging Mri ◽  
Ct And Mri

Objectives. (1) To evaluate the efficiency of work of the Department of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI); (2) to study of its work processes; and (3) to elaborate recommendations for their optimization.Material and methods. Using the principles of lean manufacturing and the original methodology of the Philips Co., the investigators made a comprehensive assessment of the work of the Tomography Department, Center for Radiation Diagnosis, Treatment and Rehabilitation, Ministry of Health of the Russian Federation, in December 2016 to February 2017, including: (1) a study of management reports; (2) oral interviews of employees; (3) a survey of employees, by using a specially designed questionnaire; (4) direct observation and subsequent description of work processes; and (5) assessment of patient satisfaction, by calculating the net promoter score. Based on the findings, the investigators calculated the throughput potential of CT and MRI, described the factors influencing the possibility of realizing this potential, developed recommendations to enhance the efficiency of work processes, and ranked the latter by the magnitude of the expected effect, by the complexity of implementation, and by material costs, followed by prioritization.Results. Assessment of the throughput potential has shown that CT and MRI examinations can be performed by 50.6% and 23.2% more, respectively. This can be achieved by additionally attracting patients, reducing equipment downtime, optimizing work processes, most of all at the stage of patient recording and registration, as well as at the stage of image interpretation and creation of a conclusion. The developed recommendations for optimizing work processes included measures of varying effectiveness and complexity, which could rank them according to three priority levels and identify long-term strategic initiatives.Conclusion. The comprehensive study of the efficiency of work of the Departments of CT and MRI made it possible to quantify the potential for increasing the throughput of CT and MRI, to consider in detail the stages of a medical service delivery process, to reveal areas for improving the process, and to form a set of recommendations for their optimization.

scholarly journals A243 A RETROSPECTIVE REVIEW OF THE RADIOGRAPHIC DIAGNOSIS AND SURGICAL RESECTION RATES OF PANCREATIC SEROUS CYSTS

2021 ◽  
Vol 4 (Supplement_1) ◽  
pp. 300-301
Author(s):  
M Monachese ◽  
S Li ◽  
M Salim ◽  
L Guimaraes ◽  
P D James
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Surgical Resection ◽  
Predictive Value ◽  
Resected Specimen ◽  
Cystic Lesions ◽  
Resonance Imaging ◽  
Guided Biopsy ◽  
Magnetic Resonance Imaging Mri

Abstract Background Pancreatic cystic lesions are increasingly identified in persons undergoing abdominal imaging. Serous cystic neoplasms (SCNs) have a very low risk of malignant transformation. Resection of SCNs is not recommended in the absence of related symptoms. The accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) to identify SCNs is not known and may impact clinical care. Aims To evaluate the accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) for the diagnosis of SCN. To see how this can impact the decision to resect suspected SCNs. Methods Retrospective cohort study of patients from the University Health Network with suspected SCNs from 2017–2020 who underwent either a CT or MRI of the abdomen. Reports noting pancreatic cystic lesions were identified and reviewed. Only cases with suspected SCNs were included. Clinical (age, sex, symptoms, treatment) and radiographic (type of imaging, reported cyst characteristics) data was collected. Pathology was reviewed for all cases where the cysts was biopsied or resected during follow-up. The gold standard for the diagnosis for SCN was pathology of resected specimen or EUS-guided biopsy cytopathology showing no evidence of a mucinous lesion, CEA level below 10ug per L and amylase level below 50 U/L. Results 163 patients were included in the study. 99 (61%) were female and 98 (60%) underwent CT scan. EUS-guided biopsy was performed in 24 (15%) of patients and 8 (5%) had surgical resection. Multidisciplinary review was performed in 6 of the 8 cases that went to surgery. Of the resected specimens, 5 (63%) were SCN, 1 was a mucinous cystic lesion, 1 was a neuroendocrine tumor and 1 was a carcinoma. Two patients underwent EUS evaluation prior to surgical resection. In one case SCN was resected when EUS reported an undetermined cyst type. Reasons for surgical resection were: the diagnosis of serous cyst was not definitive (n=5), symptoms (n=2), and high-risk mucinous cystic neoplasm identified on EUS (n=1). Of 30 patients with pathology available, 15 (50%) were confirmed to have a SCN. CT and MRI had a sensitivity, specificity, positive predictive value and negative predictive value of 93%, 25%, 52% and 80%, respectively. Conclusions Surgical resection for SCN lesions is driven by diagnostic uncertainty after cross-sectional imaging. Multidisciplinary review and EUS evaluation may improve diagnostic accuracy and should be considered prior to surgical resection of possible SCN lesions. Funding Agencies None

Diagnostic Accuracy of Magnetic Resonance Imaging and Computed Tomography Scan in Young Athletes With Spondylolysis

2019 ◽  
Vol 58 (6) ◽  
pp. 671-676
Author(s):  
Amy M. West ◽  
Pierre A. d’Hemecourt ◽  
Olivia J. Bono ◽  
Lyle J. Micheli ◽  
Dai Sugimoto
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Ct Scan ◽  
False Negative ◽  
False Negative Rate ◽  
Ct Scans ◽  
Resonance Imaging ◽  
Young Athletes ◽  
Negative Rate

The objective of this study was to determine diagnostic accuracy of magnetic resonance imaging (MRI) and computed tomography (CT) scans in young athletes diagnosed with spondylolysis. A cross-sectional study was used. Twenty-two young athletes (14.7 ± 1.5 years) were diagnosed as spondylolysis based on a single-photon emission CT. Following the diagnosis, participants underwent MRI and CT scan imaging tests on the same day. The sensitivity and false-negative rate of the MRI and CT scans were analyzed. MRI test confirmed 13 (+) and 9 (−) results while CT test showed 17 (+) and 5 (−) results. The sensitivity and false-negative rate of MRI were, respectively, 59.1% (95% confidence interval [CI] = 36.7% to 78.5%) and 40.9% (95% CI = 21.5% to 63.3%). Furthermore, the sensitivity and false-negative rate of CT scan were 77.3% (95% CI = 54.2% to 91.3%) and 22.7% (95% CI = 0.09% to 45.8%). Our results indicated that CT scan is a more accurate imaging modality to diagnose spondylolysis compared with MRI in young athletes.

scholarly journals Predictors of Spondylolysis on Magnetic Resonance Imaging in Adolescent Athletes With Low Back Pain

2021 ◽  
Vol 9 (4) ◽  
pp. 232596712199546
Author(s):  
Takuji Yokoe ◽  
Takuya Tajima ◽  
Hiroshi Sugimura ◽  
Shinichirou Kubo ◽  
Shotarou Nozaki ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Low Back Pain ◽  
Back Pain ◽  
Magnetic Resonance ◽  
Neurological Symptoms ◽  
Low Back ◽  
Resonance Imaging ◽  
Advanced Imaging ◽  
Adolescent Athletes ◽  
Mri Scans

Background: Spondylolysis and undiagnosed mechanical low back pain (UMLBP) are the main causes of low back pain (LBP) in adolescent athletes. No studies have evaluated the difference in clinical and radiographic factors between these 2 conditions. Furthermore, it remains unclear which adolescent athletes with LBP should undergo advanced imaging examination for spondylolysis. Purpose: To compare the clinical and radiographic factors of adolescent athletes with spondylolysis and UMLBP who did not have neurological symptoms or findings before magnetic resonance imaging (MRI) evaluation and to determine the predictors of spondylolysis findings on MRI. Study Design: Cohort study, Level of evidence, 3. Methods: The study population included 122 adolescent athletes aged 11 to 18 years who had LBP without neurological symptoms or findings and who underwent MRI. Of these participants, 75 were ultimately diagnosed with spondylolysis, and 47 were diagnosed with UMLBP. Clinical factors and the following radiographic parameters were compared between the 2 groups: spina bifida occulta, lumbar lordosis (LL) angle, and the ratio of the interfacet distance of L1 to that of L5 (L1:L5 ratio, %). A logistic regression analysis was performed to evaluate independent predictors of spondylolysis on MRI scans. Results: Significantly more athletes with spondylolysis were male (82.7% vs 48.9%; P < .001), had a greater LL angle (22.8° ± 8.1° vs 19.3° ± 8.5°; P = .02), and had a higher L1:L5 ratio (67.4% ± 6.3% vs 63.4% ± 6.6%; P = .001) versus athletes with UMLBP. A multivariate analysis revealed that male sex (odds ratio [OR], 4.66; P < .001) and an L1:L5 ratio of >65% (OR, 3.48; P = .003) were independent predictors of positive findings of spondylolysis on MRI scans. Conclusion: The study findings indicated that sex and the L1:L5 ratio are important indicators for whether to perform MRI as an advanced imaging examination for adolescent athletes with LBP who have no neurological symptoms and findings.

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.

Trends in contrast media research the last 100 years

2021 ◽  
pp. 028418512110510
Author(s):  
Yousef W Nielsen ◽  
Henrik S Thomsen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Contrast Media ◽  
Alimentary Tract ◽  
Adverse Reactions ◽  
Point Of View ◽  
Imaging Procedures ◽  
Resonance Imaging ◽  
Media Research ◽  
Magnetic Resonance Imaging Mri

This review focuses on the trends in contrast media (CM) research published in Acta Radiologica during the last 100 years, since the first edition in 1921. The main topics covered are the developments of iodine- and gadolinium-based CM. Other topics include manganese-based CM for magnetic resonance imaging (MRI) and barium for the investigation of the alimentary tract. From a historic point of view, special CM for use in cholegraphy and myelography are addressed in the review. Today, these imaging procedures are obsolete due to the development of computed tomography, MRI, and ultrasound. The historical use of radioactive thorium-based CM for angiography is also addressed. Furthermore, publications on adverse reactions to CM are reviewed.

scholarly journals Carcinomatous encephalitis as clinical presentation of occult lung adenocarcinoma: case report

2007 ◽  
Vol 65 (3b) ◽  
pp. 841-844 ◽  
Author(s):  
Henrique Barbosa Ribeiro ◽  
Tadeu Ferreira de Paiva Jr ◽  
Gustavo Pignatari Rosas Mamprin ◽  
Milton Luiz Gorzoni ◽  
Antônio José da Rocha ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Clinical Presentation ◽  
Clinical Manifestations ◽  
Mass Effect ◽  
Pulmonary Adenocarcinoma ◽  
Rare Entity ◽  
Resonance Imaging ◽  
Clinical Imaging ◽  
Magnetic Resonance Imaging Mri

Carcinomatous encephalitis is a rare entity, originally described by Madow and Alpers in 1951, which is characterized by tumoral spreading perivascular, without mass effect. Clinical manifestations such as hemiparesis, seizures, ataxia, speech difficulties, cerebrospinal fluid findings as well as computed tomography are nonspecific. This leads the physician to pursue more frequent diseases that could explain those manifestations - toxic, metabolic, and/or infectious encephalopathy. A magnetic resonance imaging (MRI) with gadolinium, the method of choice, presumes the diagnosis. Previous reports of this unusual form of metastatic disease have described patients with prior diagnosis of pulmonary adenocarcinoma. We present the case of carcinomatous encephalitis in a 76-years-old woman as the primary manifestation of occult pulmonary adenocarcinoma with its clinical, imaging, and anatomopathological findings.

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