Correlation Analysis of Surgical Efficacy and Risk Factors of Cervical Spondylotic Myelopathy with High Signal Intensity on MRI-T2WI

2022 ◽  
Vol 18 ◽  
Author(s):  
Ziang Xu ◽  
Liang Xiao ◽  
Chen Liu ◽  
Quanlai Zhao ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Signal Intensity ◽  
Cervical Spondylotic Myelopathy ◽  
Disease Duration ◽  
Remission Rate ◽  
High Signal ◽  
Decompression Surgery ◽  
Vertebral Canal ◽  
Weighted Magnetic Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Objectives: Objectives: The purpose of this study was to investigate the surgical efficacy and risk factors of cervical spondylotic myelopathy (CSM) patients with increased signal intensity (ISI) on T2-weighted magnetic resonance imaging (MRI-T2WI). Methods: We compared the surgical outcomes of CSM patients with and without ISI. In addition, we compared the efficacy of anterior and posterior cervical decompression in CSM patients with ISI. We also analyzed the risk factors of MRI-T2WI ISI in CSM patients. Results: The incidence of ISI among 153 CSM patients was 71.89%. The JOA score and JOA remission rate were better in the ISI-free than ISI group. The postoperative JOA score and JOA remission rate were better in the posterior than anterior approach surgery group. The disease duration and vertebral canal volume were risk factors for ISI in CSM patients. Conclusion: Among patients with CSM, the prognosis is worse for those with than without ISI. Posterior cervical decompression surgery produces a better curative effect than does anterior cervical decompression surgery in CSM patients with ISI. CSM patients who have a long disease duration and small vertebral canal volume should undergo surgical treatment as early as possible.

Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation

2017 ◽  
Vol 59 (6) ◽  
pp. 700-708
Author(s):  
Mohamed Ragab Nouh ◽  
Hanan Abd El-Aziz Amr ◽  
Rola H Ali
Keyword(s):  
Soft Tissue ◽  
Signal Intensity ◽  
Tissue Reaction ◽  
High Signal ◽  
Diagnostic Challenge ◽  
Post Contrast ◽  
Intensity Matrix ◽  
Tissue Edema ◽  
Magnetic Resonance Imaging Mri

Background Soft-tissue chondroma (STC) is a rare benign soft tissue tumor that arises primarily in acral extra-skeletal locations. Occasionally, STCs may arise in more proximal non-acral locations, accompanied by non-classic features that label them as indeterminate lesions and pose diagnostic challenge for both radiologists and pathologists alike. Purpose To explicate the potential of diagnostic imaging in the identification and characterization of appendicular non-acral STCs with emphasis on their morphologic magnetic resonance imaging (MRI) enhancement. Material and Methods Our clinical database records were searched for patients with histologically proven primary soft-tissue chondroid lesions over a five-year period. Two musculoskeletal (MSK) trained radiologists evaluated the imaging studies and an MSK pathologist revised the pathological findings. Results The study included six cases of appendicular non-acral STCs (mean age = 40.5 years). The mean size of the tumors was 5.6 cm, with four localized to the knee region, one in the thigh, and one in the sternoclavicular region. All cases showed high signal intensity matrix with low-signal intensity septa on T2-weighted MRI and post-contrast marginal/septal enhancement. The lesions were lobulated and lacked host tissue reaction except for one showing subjacent mild soft-tissue edema. Histologically, the cases lacked overt features of malignancy although one was originally misdiagnosed as chondrosarcoma. Conclusion Non-acral STCs are benign cartilaginous tumors that may pose a diagnostic challenge, both radiologically and pathologically. Collaborative imaging and pathologic workup is needed for better characterization of non-aggression of these lesions, and to avoid diagnostic pitfalls and unnecessary radical resections.

scholarly journals The ivy sign

2014 ◽  
Vol 18 (1) ◽  
Author(s):  
Nasreen Mahomed ◽  
Evance Chisama ◽  
Sanjay Prabhu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Moyamoya Disease ◽  
Signal Intensity ◽  
Perivascular Spaces ◽  
Resonance Imaging ◽  
Leptomeningeal Enhancement ◽  
Weighted Magnetic Resonance Imaging ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

The ivy sign refers to diffuse bilateral leptomeningeal enhancement on post- contrastT1-weighted magnetic resonance imaging (MRI) and increased signal intensity in bilateralsubarachnoid spaces and perivascular spaces on T2-weighted fluid attenuation inversionrecovery (FLAIR) MRI sequences in patients with moyamoya disease.

scholarly journals Pitfalls of diffusion-weighted imaging of the female pelvis

2018 ◽  
Vol 51 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Ana Luisa Duarte ◽  
João Lopes Dias ◽  
Teresa Margarida Cunha
Keyword(s):  
Signal Intensity ◽  
Diffusion Weighted Imaging ◽  
Structural Information ◽  
Biological Tissues ◽  
High Signal ◽  
Female Pelvis ◽  
Diffusion Weighted ◽  
Apparent Diffusion ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

Abstract Diffusion-weighted imaging (DWI) is widely used in protocols for magnetic resonance imaging (MRI) of the female pelvis. It provides functional and structural information about biological tissues, without the use of ionizing radiation or intravenous administration of contrast medium. High signal intensity on DWI with simultaneous low signal intensity on apparent diffusion coefficient maps is usually associated with malignancy. However, that pattern can also be seen in many benign lesions, a fact that should be recognized by radiologists. Correlating DWI findings with those of conventional (T1- and T2-weighted) MRI sequences and those of contrast-enhanced MRI sequences is mandatory in order to avoid potential pitfalls. The aim of this review article is the description of the most relevant physiological and benign pathological conditions of the female pelvis that can show restricted diffusion on DWI.

scholarly journals Neurotized Free Muscle Flaps can Produce MRI Changes Mimicking Tumour Recurrence

Sarcoma ◽  
2005 ◽  
Vol 9 (3-4) ◽  
pp. 133-136
Author(s):  
J. K. O’Neill ◽  
J. A. Barrett ◽  
T. Cobley ◽  
V. Devaraj ◽  
D. A. T. Silver
Keyword(s):  
Signal Intensity ◽  
Pathological Condition ◽  
Soft Tissue Sarcomas ◽  
Muscle Flap ◽  
High Signal Intensity ◽  
High Signal ◽  
Muscle Flaps ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Changes ◽  
T2 Weighted Images

Soft tissue sarcomas are investigated by magnetic resonance imaging (MRI) both for initial staging and follow-up. We describe the presence of increased signal on T2-weighted images caused by a neurotized muscle flap following reconstructive surgery. This raised concern about possible sarcoma recurrence that was not clinically evident. On post-operative imaging of sarcomas the presence of recurrent tumour is indicated by a mass and high signal intensity on T2-weighted images. However, high signal changes in skeletal muscle on T2-weighted images are not specific. In this case, the free functioning muscle transfer with neurotization of the flap mimicked recurrence on MR scan. High signal intensity on T2-weighted images in muscle is an indication of either a physiological change or a pathological condition and must be taken in context of the clinical picture.

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