CT and MRI characteristics of ossification of the ligamenta flava in the thoracic spine

2001 ◽  
Vol 11 (9) ◽  
pp. 1798-1802 ◽  
Author(s):  
L. Xiong ◽  
Q. Zeng ◽  
J. Jinkins
Keyword(s):  
Thoracic Spine ◽  
Ligamenta Flava ◽  
Mri Characteristics ◽  
Ct And Mri

Imaging features and atypical signs of symptomatic vertebral haemangioma: a retrospective single-centre analysis of 118 patients

2021 ◽  
Vol 94 (1121) ◽  
pp. 20201250
Author(s):  
Lihua Zhang ◽  
Ben Wang ◽  
Songbo Han ◽  
Shaomin Yang ◽  
Liang Jiang ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Thoracic Spine ◽  
Compression Fracture ◽  
Imaging Features ◽  
Single Centre ◽  
Vertebral Haemangioma ◽  
Common Location ◽  
Spinal Segments ◽  
Mri Characteristics ◽  
Ct And Mri

Objectives: Symptomatic vertebral haemangioma (SVH) can present with atypical imaging features. Thus, this study analysed the imaging features of SVH using CT and MRI to improve SVH awareness. Methods: We retrospectively analysed CT and MRI characteristics of 118 patients with clinically and pathologically confirmed SVH. Results: Overall, 118 patients were diagnosed with SVH, including 79 females and 39 males (mean age, 45.76 ± 16.36 years). The thoracic spine (n = 86) was the most common location of SVH, followed by the lumbar spine (n = 17). Involvement of multiple spinal segments was observed in 15 patients (12.71%). A total of 101 lesions (85.59%) were centred in the vertebral body, 15 lesions (12.71%) were centred in the posterior attachment, and two lesions (2%) were centred in the paraspinal region. CT showed 39 lesions (33.05%) without a typical honeycomb or polka-dot pattern. Compression fracture was observed in 23 patients (19.49%). Extraosseous extension was present in 111 patients (94.1%), and 17 lesions (14.41%) presented with foraminal extension. Epidural bony compression was observed in 46 patients (38.98%). 20 lesions (16.95%) had atypical T2 weighted MRI signals, and 8 lesions (10.26%) showed atypical enhancement. Conclusion: SVH was predominantly located in the thoracic spine. Involvement of multiple segments, posterior attachment localisation, absence of honeycomb or polka-dot signs, compression fracture, and atypical T2 weighted imaging signals and enhancement were uncommon. Epidural bony compression was not uncommon and has important clinical significance. Advances in knowledge: The imaging features of SVHs are not fully understood. We examined the largest series of SVH cases reported to date.

CT and MRI characteristics of ovarian mature teratoma in patients with anti-N-methyl-D-aspartate receptor encephalitis

2021 ◽  
Author(s):  
Masaya Kawaguchi ◽  
Hiroki Kato ◽  
Yoshifumi Noda ◽  
Natsuko Suzui ◽  
Tatsuhiko Miyazaki ◽  
...  
Keyword(s):  
Mature Teratoma ◽  
Aspartate Receptor ◽  
Mri Characteristics ◽  
Ct And Mri

scholarly journals FEATURES OF THE DIAGNOSIS OF UNCOMPLICATED COMPRESSION FRACTURE OF THE THORACIC SPINE IN CHILDREN

2019 ◽  
Vol 20 (5) ◽  
pp. 307-311
Author(s):  
Yakhya M. Yakhyaev ◽  
M. I. Izrailov ◽  
V. N. Merkulov ◽  
A. M. Aliskandiev ◽  
T. Ya. Yakhyaeva
Keyword(s):  
Thoracic Spine ◽  
Compression Fracture ◽  
Diagnostic Process ◽  
Vertebral Compression Fractures ◽  
Thoracic Vertebrae ◽  
Healthy Children ◽  
X Ray ◽  
Compression Fractures ◽  
Fractures In Children ◽  
Ct And Mri

X-ray diagnostics of compression fractures of bodies of the thoracic vertebrae in children not seldom causes great difficulties due to the fact that even in healthy children vertebrae have a number of features, particularly, the wedge shape. For the purpose of differential diagnosis there was performed chest X-ray examination of the thoracic vertebrae in healthy children and cases after the compression damage. The wedge index and the disk coefficient for various segments of the thoracic spine were calculated. The diagnostic efficiency of radionuclide studies was estimated to reaches 79%. The useof highly informative modern medical techniques (CT and MRI) in the diagnosis of vertebral compression fractures in children allows accurately and timely make the diagnosis and determine the condition of the surrounding tissues. Based on the analysis of medical records, radiographs, identification of options of radionuclide, CT and MRI studies, there was elaborated an algorithm for the diagnosis of compression fractures of vertebrae, which allowed optimize the diagnostic process. There are determined advantages of this algorithm.

Primary B cell lymphoma of the sphenoid sinus: CT and MRI characteristics with correlation to perfusion and spectroscopic imaging features

2007 ◽  
Vol 264 (10) ◽  
pp. 1207-1213 ◽  
Author(s):  
Sotirios Bisdas ◽  
Sebastian Fetscher ◽  
Alfred C. Feller ◽  
Mehran Baghi ◽  
Rainald Knecht ◽  
...  
Keyword(s):  
B Cell ◽  
Sphenoid Sinus ◽  
Cell Lymphoma ◽  
Spectroscopic Imaging ◽  
B Cell Lymphoma ◽  
Imaging Features ◽  
Mri Characteristics ◽  
Ct And Mri

Tuberous sclerosis: CT and MRI characteristics

1993 ◽  
Vol 16 (3) ◽  
pp. 176-179 ◽  
Author(s):  
Herwig Thibaut ◽  
Paul M. Parizel ◽  
Johan Van Goethem ◽  
Arthur M. De Schepper
Keyword(s):  
Tuberous Sclerosis ◽  
Mri Characteristics ◽  
Ct And Mri

Benign and malignant skull-involved lesions: discriminative value of conventional CT and MRI combined with diffusion-weighted MRI

2018 ◽  
Vol 60 (7) ◽  
pp. 880-886 ◽  
Author(s):  
Zhanhai Tu ◽  
Zebin Xiao ◽  
Yingyan Zheng ◽  
Hongjie Huang ◽  
Libin Yang ◽  
...  
Keyword(s):  
Roc Curve ◽  
Mri Findings ◽  
Adc Value ◽  
Diffusion Weighted ◽  
Apparent Diffusion ◽  
Discriminative Value ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Characteristics ◽  
Conventional Ct ◽  
Ct And Mri

Background Little is known about the value of computed tomography (CT) and magnetic resonance imaging (MRI) combined with diffusion-weighted imaging (DWI) in distinguishing malignant from benign skull-involved lesions. Purpose To evaluate the discriminative value of DWI combined with conventional CT and MRI for differentiating between benign and malignant skull-involved lesions. Material and Methods CT and MRI findings of 58 patients with pathologically proven skull-involved lesions (43 benign and 15 malignant) were retrospectively reviewed. Conventional CT and MRI characteristics and apparent diffusion coefficient (ADC) value of the two groups were evaluated and compared. Multivariate logistic regression and receiver operating characteristic (ROC) curve analyses were performed to assess the differential performance of each parameter separately and together. Results The presence of cortical defects or break-through and ill-defined margins were associated with malignant skull-involved lesions (both P < 0.05). Malignant skull-involved lesions demonstrated a significantly lower ADC ( P = 0.016) than benign lesions. ROC curve analyses indicated that a combination of CT, MRI, and DWI with an ADC ≤ 0.703 × 10–3 mm2/s showed optimal sensitivity, while DWI along showed optimal specificity of 88.4% in differentiating between benign and malignant skull-involved lesions. Conclusion The combination of CT, MRI, and DWI can help to differentiate malignant from benign skull-involved lesions. CT + MRI + DWI offers optimal sensitivity, while DWI offers optimal specificity.

Imaging features of primary renal lymphoma

2017 ◽  
Vol 59 (1) ◽  
pp. 114-120 ◽  
Author(s):  
Qingqiang Zhu ◽  
Wenrong Zhu ◽  
Jingtao Wu ◽  
Wenxin Chen
Keyword(s):  
Multislice Computed Tomography ◽  
Low Grade ◽  
Imaging Features ◽  
Mri Imaging ◽  
Abdominal Vessels ◽  
Renal Lymphoma ◽  
Renal Enlargement ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Characteristics ◽  
Ct And Mri

Background Cases of primary renal lymphoma (PRL) are quite rare and are often mistaken for renal cell carcinoma. Purpose To determine the multislice computed tomography (MSCT) and magnetic resonance imaging (MRI) characteristics of PRL. Materials and Methods Twenty-three patients with PRL were identified by CT and MRI, and their tumor characteristics were assessed. Results Tumors exhibited single or multifocal nodules (n = 19) and diffuse renal enlargement (n = 4). Twenty-two tumors exhibited an infiltrative appearance. There was no evidence of calcification in any of the cases. Twenty-one tumors displaced or wrapped around abdominal vessels rather than encasing them. Enlarged retroperitoneal nodes were observed in three cases. Neither extension into the venous system nor distant metastasis was found. Tumor enhancement was of low attenuation compared with that of normal renal cortex and medulla ( P < 0.05). PRL was isointense on T1-weighted imaging, slightly hypointense on T2-weighted imaging and hyperintense on diffusion-weighted imaging. Twenty-two patients exhibited biopsy-confirmed PRN. There were four, 12, and seven cases of low-grade, intermediate-grade, and high-grade tumors, respectively. Patient were followed up over 16 to 166 months. Six patients died within three years and five patients died within five years. Conclusion Infiltrative appearance and tumor displacement or extension around abdominal vessels rather than vessel encasement are common findings on CT or MRI imaging and may suggest a diagnosis of PRL.

CT and MRI characteristics for differentiating mediastinal Müllerian cysts from bronchogenic cysts

2019 ◽  
Vol 74 (12) ◽  
pp. 976.e19-976.e25 ◽  
Author(s):  
M. Kawaguchi ◽  
H. Kato ◽  
A. Hara ◽  
N. Suzui ◽  
H. Tomita ◽  
...  
Keyword(s):  
Mri Characteristics ◽  
Bronchogenic Cysts ◽  
Ct And Mri

MRI of a Split Cord Malformation in a German Shepherd Dog

2012 ◽  
Vol 48 (5) ◽  
pp. 344-351 ◽  
Author(s):  
Brian Allett ◽  
Michael R. Broome ◽  
David Hager
Keyword(s):  
Thoracic Spine ◽  
Bladder Dysfunction ◽  
Spinal Dysraphism ◽  
Clinical Signs ◽  
Abnormal Development ◽  
Split Cord Malformation ◽  
German Shepherd ◽  
German Shepherd Dog ◽  
Thoracic And Lumbar Spine ◽  
Mri Characteristics

A 9 yr old spayed female German shepherd dog was referred for MRI of the thoracic and lumbar spine because she had clinical signs of chronic neurogenic bladder dysfunction of an unknown cause. Transverse T2-weighted images identified a type II split cord malformation (i.e., diastematomyelia) in the thoracic spine. Split cord malformations are forms of spinal dysraphism where the abnormal development of spinal cord results in sagittal splitting of a portion of the cord into two hemicords. The location of the lesion in the thoracic spine was consistent with the dog’s clinical signs of an upper motor neuron bladder. Split cord malformations that occur in humans have similar MRI characteristics and can result in similar clinical signs as those identified in the dog described in this report.

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