scholarly journals Cross-sectional anatomy, computed tomography, and magnetic resonance imaging of the banded houndshark (Triakis scyllium)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sang Wha Kim ◽  
Adams Hei Long Yuen ◽  
Cherry Tsz Ching Poon ◽  
Joon Oh Hwang ◽  
Chang Jun Lee ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Imaging Techniques ◽  
Evolutionary Developmental Biology ◽  
Phylogenetic Position ◽  
Ct Scanner ◽  
Resonance Imaging ◽  
Cross Sectional

AbstractDue to their important phylogenetic position among extant vertebrates, sharks are an invaluable group in evolutionary developmental biology studies. A thorough understanding of shark anatomy is essential to facilitate these studies and documentation of this iconic taxon. With the increasing availability of cross-sectional imaging techniques, the complicated anatomy of both cartilaginous and soft tissues can be analyzed non-invasively, quickly, and accurately. The aim of this study is to provide a detailed anatomical description of the normal banded houndshark (Triakis scyllium) using computed tomography (CT) and magnetic resonance imaging (MRI) along with cryosection images. Three banded houndsharks were scanned using a 64-detector row spiral CT scanner and a 3 T MRI scanner. All images were digitally stored and assessed using open-source Digital Imaging and Communications in Medicine viewer software in the transverse, sagittal, and dorsal dimensions. The banded houndshark cadavers were then cryosectioned at approximately 1-cm intervals. Corresponding transverse cryosection images were chosen to identify the best anatomical correlations for transverse CT and MRI images. The resulting images provided excellent detail of the major anatomical structures of the banded houndshark. The illustrations in the present study could be considered as a useful reference for interpretation of normal and pathological imaging studies of sharks.

Magnetic Resonance Imaging in the Diagnosis of Disruption of the Posterior Tibial Tendon

Foot & Ankle ◽  
1987 ◽  
Vol 8 (3) ◽  
pp. 144-147 ◽  
Author(s):  
Ian J. Alexander ◽  
Kenneth A. Johnson ◽  
Thomas H. Berquist
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Diagnostic Technique ◽  
Clinical Findings ◽  
The Body ◽  
Posterior Tibial Tendon ◽  
Resonance Imaging ◽  
Posterior Tibial ◽  
Magnetic Resonance Imaging Mri

Magnetic resonance imaging (MRI), a useful technique of studying soft tissues of the body, can be very effective in assessing the integrity of tendons. Usually a patient with a complete tear of the posterior tibial tendon has characteristic physical findings. In the patient presented, MRI demonstrated a complete disruption of the posterior tibial tendon, despite the absence of the commonly associated clinical findings. In view of the difficulties encountered with attempted tenography of the completely torn posterior tibial tendon, MRI provides a sensitive alternative diagnostic technique.

scholarly journals Role of magnetic resonance imaging in ankle sprains

2021 ◽  
Vol 25 (1) ◽  
pp. 438-445
Author(s):  
Nawroz Othman ◽  
Salwa AL-Najjar
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Evaluation ◽  
Ankle Sprain ◽  
Soft Tissues ◽  
Ankle Injuries ◽  
Bone Lesions ◽  
Ankle Sprains ◽  
Resonance Imaging ◽  
Imaging Results

Background and objective: Musculoskeletal injuries frequently occur in the ankle in both the athletic and general population. Ankle sprains are among the most frequent types of ankle injuries, which are conventionally diagnosed through clinical examinations. However, magnetic resonance imaging can provide a more precise diagnosis, leading to better injury management and prevention of consequent chronic complications. The present study aimed to examine the significance of magnetic resonance imaging in detecting and assessing changes that occur in ligaments and soft tissues in patients with ankle sprains. Methods: In a prospective study, 50 patients with ankle sprain referred to Rizgary and Erbil Teaching hospitals in Erbil city, Iraqi Kurdistan Region, from March 2018 to April 2019, were included in the study. They underwent clinical evaluation and MRI (GE general electric 1.5 Tesla). Two expert radiologists analyzed the magnetic resonance imaging images, and the results were compared. The collected data were analyzed using SPSS version 23 through descriptive statistics. Results: Most patients (64%) belonged to the age groups of 30-49 years old. Most of them (64%) were males. Most events of ankle sprain (66%) were because of sports and accidents. The clinical evaluation proved 82% of the ankle sprains. Regarding the laterality of the lesions, 60% were spotted in the right ankles and 40% in the left. According to magnetic resonance imaging results, both radiologists diagnosed that the ankle sprains included bone lesions, ligament injury, tendon injury, and effusion. There was an agreement of ≥ 96% between the two radiologists in this regard. The two radiologists were not significantly different in terms of diagnosing the ligament side. As reported by the radiologists based on the magnetic resonance imaging images, the anterior, lateral, and medial tendons were normal in most cases. Conclusion: Magnetic resonance imaging is a vitally important tool that can be utilized reliably and accurately to diagnose and evaluate changes in ligaments and soft tissues in patients with ankle sprains. Keywords: Magnetic resonance imaging (MRI); Ankle sprain; Ligaments; Injuries.

scholarly journals Scleroderma-panniculitis: view of the rheumatologist

2021 ◽  
Vol 15 (2) ◽  
pp. 77-82
Author(s):  
A. S. Potapova ◽  
O. N. Egorova ◽  
O. G. Alekseeva ◽  
A. V. Volkov ◽  
D. M. Kudinsky
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Histological Examination ◽  
Antiphospholipid Syndrome ◽  
Clinical Case ◽  
Soft Tissues ◽  
Resonance Imaging ◽  
Diagnosis And Therapy

Difficulties in diagnosis and therapy of scleroderma-panniculitis (S-PN), one of the variants of the septal PN, are discussed. Feasibility of ultrasonography, magnetic resonance imaging of soft tissues and histological examination of the lesions in order to set the diagnosis of PN in time is considered. The clinical case of S-PN combined with antiphospholipid syndrome is presented.

Gadolinium-DTPA Enhancement of Experimental Soft Tissue Carcinoma and Hemorrhage in Magnetic Resonance Imaging

1987 ◽  
Vol 28 (1) ◽  
pp. 75-78 ◽  
Author(s):  
H. Pettersson ◽  
N. Ackerman ◽  
J. Kaude ◽  
R. E. Googe ◽  
A. A. Mancuso ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Body Weight ◽  
Magnetic Resonance ◽  
Tumor Tissue ◽  
Soft Tissues ◽  
Relaxation Times ◽  
Resonance Imaging ◽  
Benign Lesions ◽  
Gadolinium Dtpa ◽  
T1 Relaxation

An experimental series in the rabbit was performed to test gadolinium-DTPA (Gd-DTPA) enhancement of VX-2 carcinoma and hemorrhages induced in the soft tissues. The recognition of both malignant and benign lesions was greatly facilitated on T1 weighted images after intravenous administration of 0.3 mmol Gd-DTPA/kg body weight because of reduced T1 relaxation times. Gd-DTPA enhancement reached its maximum after 10–15 minutes and was most apparent in tumor tissue, connective tissue surrounding the tumor and in the area of fresh hemorrhage.

Magnetic Resonance Imaging in Retropharyngeal Tendinitis

Cephalalgia ◽  
1994 ◽  
Vol 14 (4) ◽  
pp. 266-269 ◽  
Author(s):  
K Ekbom ◽  
J Tothall ◽  
K Annell ◽  
J Träff
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cervical Spine ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Signal Intensity ◽  
Soft Tissues ◽  
Resonance Imaging ◽  
X Ray ◽  
Soft Tissue Swelling ◽  
Retropharyngeal Tendinitis

Seven consecutive patients with acute retropharyngeal tendinitis underwent plain X-ray and magnetic resonance imaging (MRI) of the cervical spine. All seven had marked soft tissue swelling anterior to C1 and C2 on plain X-ray, and soft tissue calcification at this level was present in five of them. On MRI, there was markedly increased signal intensity on T2-weighted images in the acute phase and intermediate signal intensity on T1-weighted images, anterior to the level of C1 and C2, often extending as far down as C6. These changes correlated well with the soft tissue swelling seen on conventional X-ray of the cervical spine. The maximum mid-sagittal thickness of the soft tissues was significantly greater in the tendinitis patients ( p < 0.001) than in 12 control subjects free of symptoms from the pharynx or the cervical spine. Treatment with non-steroidal anti-inflammatory drugs rapidly alleviated symptoms, and at follow-up MRI showed regression or complete restitution of the changes. In conclusion, MRI can visualize the edematous changes in the longus colli muscle and adds useful diagnostic information in suspected cases of acute retropharyngeal tendinitis.

Synovial Sarcoma of the Foot

2010 ◽  
Vol 100 (3) ◽  
pp. 216-219 ◽  
Author(s):  
Roger Racz ◽  
Ronald Belczyk ◽  
Ronald P. Williams ◽  
Martin P. Fernandez ◽  
Thomas Zgonis
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Synovial Sarcoma ◽  
Soft Tissues ◽  
Foot And Ankle ◽  
Resonance Imaging ◽  
Medial Aspect ◽  
Radiographic Appearance ◽  
The Right

We report a case of a 40-year-old woman with synovial sarcoma who presented with neural symptoms in the medial aspect of the right foot and ankle. The radiographic appearance of the foot and ankle was unremarkable, but magnetic resonance imaging showed a relatively well-defined enhancing lesion in the plantar soft tissues extending from the master knot of Henry to the posterior tibialis tendon. After orthopedic oncologic evaluation and workup, the patient was ultimately treated with a transtibial amputation, and no evidence of recurrence or metastatic disease was seen at 6-month follow-up. (J Am Podiatr Med Assoc 100(3): 216–219, 2010)

scholarly journals Magnetic resonance imaging of intraoral hard and soft tissues using an intraoral coil and FLASH sequences

2016 ◽  
Vol 26 (12) ◽  
pp. 4616-4623 ◽  
Author(s):  
Tabea Flügge ◽  
Jan-Bernd Hövener ◽  
Ute Ludwig ◽  
Anne-Kathrin Eisenbeiss ◽  
Björn Spittau ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Resonance Imaging
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