scholarly journals Superficial Venous Reflux Intervention Guided by Triggered Angiography Non-Contrast-Enhanced Sequence Magnetic Resonance Imaging: Different QFlow Pattern from Health Controls

2021 ◽  
Vol 11 (8) ◽  
pp. 751
Author(s):  
Chien-Wei Chen ◽  
Yuan-Hsi Tseng ◽  
Yueh-Fu Fang ◽  
Min Yi Wong ◽  
Yu-Hui Lin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Healthy Volunteers ◽  
Intervention Group ◽  
Venous Intervention ◽  
Resonance Imaging ◽  
Venous Reflux ◽  
Contrast Enhanced ◽  
Magnetic Resonance Imaging Mri ◽  
The Right

(1) Background: To assess the effectiveness of triggered angiography non-contrast-enhanced (TRANCE)-magnetic resonance imaging (MRI) in superficial venous reflux and its difference from health controls. (2) Methods: Thirty patients underwent TRANCE MRI before surgical intervention of their superficial venous reflux of the legs. Ten healthy volunteers were included as a control. (3) Results: TRANCE MRI involves the major tributaries, thus enhances the additional ablations in 20% of patients. QFlow pattern of superficial venous reflux (QFlow GSV/PV MF ratio > 1) was compared with the duplex scan (SFJ reflux) using Cohen’s kappa coefficient at 0.967. The 30 morbid legs undergoing TRANCE MRI-guide interventions and the healthy volunteers’ legs on the same side were compared. The stroke volumes (SV) are higher in EIV (p = 0.021) in the left-leg-intervention group. The mean flux (MF) is higher in the EIV (p = 0.012) and trend of increasing in GSV segment (p = 0.087) in the left-leg-intervention group. The QFlow of 10 patients with right leg intervention are higher in GSV in the right-leg-intervention group (SV p = 0.002; FFV p = 0.001; MF p = 0.001). QFlow data is shown for all legs for superficial venous intervention with GSV/PV (MF) ratio > 1. (4) Conclusions: Typical figures in QFlow (GSV/PV MF ratio > 1) could be observed in the morbid limbs but not in the controls.

scholarly journals Visualization of a Small Ventricular Septal Defect at First-pass Contrast-enhanced Cardiac Magnetic Resonance Imaging

2013 ◽  
Vol 3 ◽  
pp. 59 ◽  
Author(s):  
Francesco Secchi ◽  
Antonello Giardino ◽  
Salvatore Fabiano ◽  
Vlasta Fesslova ◽  
Francesco Sardanelli
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Ventricular Septal Defect ◽  
Septal Defect ◽  
Contrast Material ◽  
Resonance Imaging ◽  
Contrast Enhanced ◽  
First Pass ◽  
Magnetic Resonance Imaging Mri ◽  
The Right

Ventricular septal defect (VSD) is a congenital heart disease that accounts for up to 40% of all congenital cardiac malformations. VSD is a connection between right and left ventricle, through the ventricular septum. Echocardiography and magnetic resonance imaging (MRI) help identify this entity. This case presents a 12-year-old male diagnosed with a small muscular apical VSD of 3 mm in diameter, at echocardiography. Cardiac MRI using first-pass perfusion sequence, combining the right plane of acquisition with a short bolus of contrast material, clearly confirmed the presence of VSD.

scholarly journals The value of contrast-enhanced FLAIR magnetic resonance imaging in detecting meningeal abnormalities in suspected cases of meningitis compared to conventional contrast-enhanced T1WI sequences

2020 ◽  
Vol 51 (1) ◽  
Author(s):  
Wael Hamza Kamr ◽  
Mohamed Gaber Eissawy ◽  
Amr Saadawy
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Early Diagnosis ◽  
Diagnosis And Treatment ◽  
Effective Management ◽  
Resonance Imaging ◽  
Flair Sequence ◽  
Csf Analysis ◽  
Contrast Enhanced ◽  
Magnetic Resonance Imaging Mri

Abstract Background Early diagnosis of meningitis with magnetic resonance imaging (MRI) would be useful for appropriate and effective management, decrease morbidity and mortality, and provide better diagnosis and treatment. The objective of the current study is to compare the accuracy of contrast-enhanced FLAIR (CE-FLAIR) and contrast-enhanced T1WI (CE-T1WI) in the detection of meningeal abnormalities in suspected cases of meningitis. Results Out of 45 patients, 37 patients were confirmed to have meningitis on CSF analysis. Out of the 37 patients, 34 patients were positive on CE-FLAIR sequence and 27 were positive on CE-T1WI. The sensitivity of CE-FLAIR sequence was 91.9% and specificity 100%, while the sensitivity of CE-T1WI sequence was 73% and specificity 100%. Conclusion CE-FLAIR is more sensitive than CE-T1WI in diagnosis of meningitis. It is recommended to be used in any cases with clinically suspected meningitis.

Magnetic Resonance Imaging in Gynecological Oncology

2009 ◽  
Vol 19 (2) ◽  
pp. 186-193 ◽  
Author(s):  
Vanessa N. Harry ◽  
Heather Deans ◽  
Emma Ramage ◽  
David E. Parkin ◽  
Fiona J. Gilbert
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Early Assessment ◽  
Contrast Enhanced ◽  
Crucial Information ◽  
Magnetic Resonance Imaging Mri ◽  
Indispensable Tool ◽  
Improving Patient Care

Magnetic resonance imaging (MRI) has become an indispensable tool in the assessment of malignant disease. With increasingly sophisticated systems and technical advancements, MRI has continued to expand its role in providing crucial information regarding cancer diagnosis and management. In gynecological malignancies, this modality has assumed greater responsibility, particularly in the evaluation of cervical and endometrial cancers. In addition to conventional imaging, innovative techniques such as dynamic contrast-enhanced MRI and diffusion-weighted MRI show promise in offering early assessment of tumor response. This paper reviews the current role of MRI in gynecological cancers and highlights the potential of novel techniques in improving patient care.

In Vivo MR Studies of Dynamic Changes in the Interosseous Membrane of the Forearm During Rotation

1999 ◽  
Vol 24 (2) ◽  
pp. 245-248 ◽  
Author(s):  
T. NAKAMURA ◽  
Y. YABE ◽  
Y. HORIUCHI
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Interosseous Membrane ◽  
Resonance Imaging ◽  
Forearm Rotation ◽  
Dynamic Changes ◽  
Magnetic Resonance Imaging Mri ◽  
Membranous Part ◽  
The Right

In vivo dynamic changes in the interosseous membrane (IOM) during forearm rotation were studied using magnetic resonance imaging (MRI). The right forearms of 20 healthy volunteers were examined in five different rotational positions. Axial slices were obtained at the proximal quarter, the middle and the distal quarter of the forearm. The changes in shape of the IOM during rotation were observed in an axial MR plane. For each image, we measured the interosseous distance and the length of the interosseous membrane. Images of the tendinous and membranous parts of the IOM could be differentiated by thickness. There were minimal dynamic changes in the tendinous part on the MRI while the membranous part showed numerous changes during rotation. The interosseous distance and the length of the interosseous membrane were maximum from a neutral to a slightly supinated position. The tendinous part is considered to be taut during rotation to provide stability between the radius and the ulna, but the membranous part which is soft, thin and elastic, allows smooth rotation.

scholarly journals Multifocality and Multicentrality in Breast Cancer: Comparison of the Efficiency of Mammography, Contrast-Enhanced Spectral Mammography, and Magnetic Resonance Imaging in a Group of Patients with Primarily Operable Breast Cancer

2021 ◽  
Vol 28 (5) ◽  
pp. 4016-4030
Author(s):  
Katarzyna Steinhof-Radwańska ◽  
Andrzej Lorek ◽  
Michał Holecki ◽  
Anna Barczyk-Gutkowska ◽  
Anna Grażyńska ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Surgical Intervention ◽  
Histopathological Examination ◽  
Breast Conserving Therapy ◽  
Resonance Imaging ◽  
Contrast Enhanced ◽  
Highly Sensitive ◽  
Magnetic Resonance Imaging Mri

Background: The multifocality and multicentrality of breast cancer (MFMCC) are the significant aspects that determine a specialist’s choice between applying breast-conserving therapy (BCT) or performing a mastectomy. This study aimed to assess the usefulness of mammography (MG), contrast-enhanced spectral mammography (CESM), and magnetic resonance imaging (MRI) in women diagnosed with breast cancer before qualifying for surgical intervention to visualize other (additional) cancer foci. Methods: The study included 60 breast cancer cases out of 630 patients initially who underwent surgery due to breast cancer from January 2015 to April 2019. MG, CESM, and MRI were compared with each other in terms of the presence of MFMCC and assessed for compliance with the postoperative histopathological examination (HP). Results: Histopathological examination confirmed the presence of MFMCC in 33/60 (55%) patients. The sensitivity of MG in detecting MFMCC was 50%, and its specificity was 95.83%. For CESM, the sensitivity was 85.29%, and the specificity was 96.15%. For MRI, all the above-mentioned parameters were higher as follows: sensitivity—91.18%; specificity—92.31%. Conclusions: In patients with MFMCC, both CESM and MRI are highly sensitive in the detection of additional cancer foci. Both CESM and MRI change the extent of surgical intervention in every fourth patient.

scholarly journals Fibromatosis colli: a rare left-sided presentation in a female infant

2020 ◽  
Vol 7 (1) ◽  
pp. 141
Author(s):  
Arthur Wong ◽  
Tengku Ezulia Tengku Nun Ahmad
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Benign Lesion ◽  
Fibrous Tissue ◽  
Final Diagnosis ◽  
Sternocleidomastoid Muscle ◽  
Female Infant ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Right

<p class="abstract">Fibromatosis colli is a rare benign lesion characterised by a proliferation of fibrous tissue within the sternocleidomastoid muscle. There is a slight preponderance to affect males and it occurs more frequently on the right side of the neck. Here, we report a 6-week-old girl who presented with a swelling on the left side of her neck, opposite to usual tendencies. Ultrasonography reported a left sternocleidomastoid muscle tumour of unknown specificity. A magnetic resonance imaging (MRI) was needed to ascertain the final diagnosis of a left fibromatosis colli. She was managed conservatively and the condition resolved by the age of 1 year. In most cases, fibromatosis colli is reliably diagnosable with ultrasonography alone. MRI may be considered as an adjunct in situations where diagnostic doubts still persist.</p>

Quantitative Muscle Ultrasound versus Magnetic Resonance Imaging in Duchenne Muscular Dystrophy

2020 ◽  
Author(s):  
Jun Hu ◽  
Li Jiang ◽  
Siqi Hong ◽  
Li Cheng ◽  
Qiao Wang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Duchenne Muscular Dystrophy ◽  
Magnetic Resonance ◽  
Muscular Dystrophy ◽  
Low Cost ◽  
Muscle Thickness ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Muscle Ultrasound

Abstract Background: Nowadays, it needs favorable biomarkers to follow up the disease progression and therapeutic responses of Duchenne muscular dystrophy (DMD). This study evaluates which one of Quantitative muscle ultrasound (QMUS) and magnetic resonance imaging (MRI) is suitable for the disease in China. Methods: Thirty-six boys with DMD engaged in the longitudinal observational cohort study, who used prednisone from baseline to 12th month. Muscle thickness (MT) and echo intensity (EI) of QMUS and T1-weighted MRI grading were measured in the right quadriceps femoris of the boys with DMD. Results: The scores of MT and EI of QMUS and T1-weighted MRI grading showed significant correlations with the clinical ones of muscle strength, timed testing, and quality of life. The scores of MT and EI of QMUS showed good correlations with the ones of T1-weighted MRI grading too (P<0.05). But 15 of 36 boys with DMD did not take MRI examinations for different reasons. Conclusions: QMUS and MRI can use as biomarkers for tracking DMD. Nevertheless, QMUS, because of its practical, low cost, and patient-friendly, applies for DMD widely than MRI in China. Keywords: Ultrasonography, Magnetic resonance imaging, Duchenne muscular dystrophy, Child

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