34 documents found, page 1 of 4
Applications of the Dixon technique in the evaluation of the musculoskeletal sy...
Lins,Carolina Freitas; Salmon,Carlos Ernesto Garrido; Nogueira-Barbosa,Marcello HenriqueAbstract The acquisition of images with suppression of the fat signal is very useful in clinical practice and can be achieved in a variety of sequences. The Dixon technique, unlike other fat suppression techniques, allows the signal of fat to be suppressed in the postprocessing rather than during acquisition, as well as allowing the visualization of maps showing the distribution of water and fat. This review of...
Evaluation of variations of the glenoid attachment of the inferior glenohumeral...
Simão,Marcelo Novelino; Kobayashi,Maximilian Jokiti; Hernandes,Matheus de Andrade; Nogueira-Barbosa,Marcello HenriqueAbstract Objective: To evaluate the anatomical variations of the attachment of the inferior glenohumeral ligament (IGHL) to the anterior glenoid rim. Materials and Methods: This was a retrospective review of 93 magnetic resonance arthrography examinations of the shoulder. Two radiologists, who were blinded to the patient data and were working independently, read the examinations. Interobserver and intraobserver...
Manual versus semiautomatic segmentation of soft-tissue sarcomas on magnetic re...
Dionisio,Fernando Carrasco Ferreira; Oliveira,Larissa Santos; Hernandes,Mateus de Andrade; Engel,Edgard Eduard; Azevedo-Marques,Paulo Mazzoncini deAbstract Objective: To evaluate the degree of similarity between manual and semiautomatic segmentation of soft-tissue sarcomas on magnetic resonance imaging (MRI). Materials and Methods: This was a retrospective study of 15 MRI examinations of patients with histopathologically confirmed soft-tissue sarcomas acquired before therapeutic intervention. Manual and semiautomatic segmentations were performed by three ...
Magnetic resonance imaging evaluation of common peroneal nerve injury in acute ...
Marconi,Gustavo Felix; Simão,Marcelo Novelino; Fogagnolo,Fabricio; Nogueira-Barbosa,Marcello HenriqueAbstract Objective: To evaluate qualitative and quantitative magnetic resonance imaging (MRI) criteria for injury of the common peroneal nerve (CPN) in patients with acute or subacute injuries in the posterolateral corner (PLC) of the knee, as well as to evaluate the reproducibility of MRI evaluation of CPN alterations. Materials and Methods: This was a retrospective study of 38 consecutive patients submitted t...
Spinopelvic sagittal balance: what does the radiologist need to know?
Savarese,Leonor Garbin; Menezes-Reis,Rafael; Bonugli,Gustavo Perazzoli; Herrero,Carlos Fernando Pereira da Silva; Defino,Helton Luiz AparecidoSagittal balance describes the optimal alignment of the spine in the sagittal plane, resulting from the interaction between the spine and lower limbs, via the pelvis. Understanding sagittal balance has gained importance, especially in the last decade, because sagittal imbalance correlates directly with disability and pain. Diseases that alter that balance cause sagittal malalignment and may trigger compensatory...
Comparison between STIR and T2-weighted SPAIR sequences in the evaluation of in...
Dalto,Vitor Faeda; Assad,Rodrigo Luppino; Lorenzato,Mario Müller; Crema,Michel Daoud; Louzada-Junior,Paulo; Nogueira-Barbosa,Marcello HenriqueAbstract Objective: To compare two different fat-saturated magnetic resonance imaging (MRI) techniques-STIR and T2 SPAIR-in terms of image quality, as well as in terms of their diagnostic performance in detecting sacroiliac joints (SIJ) active inflammation. Materials and Methods: We included 69 consecutive patients with suspected spondyloarthritis undergoing MRI between 2012 and 2014. The signal-to-noise ratio ...
Integrating bilingual musculoskeletal imaging education into radiology and diag...
Chagas-Neto,Francisco Abaeté; Caracas,Barbara; Fortaleza,Idalia; Fortaleza,Esio; Rocha,Eduardo Lima; Taneja,Atul Kumar; Abreu,EvandroAbstract Objective: To analyze the perception of the relevance of introducing bilingual (Portuguese-English) musculoskeletal imaging education into radiology and diagnostic imaging residency programs, describing the method used. Materials and Methods: To evaluate the relevance of incorporating the bilingual study of musculoskeletal imaging into medical residency programs, we administered a questionnaire, consis...
Reproducibility of abdominal fat assessment by ultrasound and computed tomography
Mauad,Fernando Marum; Chagas-Neto,Francisco Abaeté; Benedeti,Augusto César Garcia Saab; Nogueira-Barbosa,Marcello Henrique; Muglia,Valdair FranciscoAbstract Objective: To test the accuracy and reproducibility of ultrasound and computed tomography (CT) for the quantification of abdominal fat in correlation with the anthropometric, clinical, and biochemical assessments. Materials and Methods: Using ultrasound and CT, we determined the thickness of subcutaneous and intra-abdominal fat in 101 subjects-of whom 39 (38.6%) were men and 62 (61.4%) were women-with ...
Sciatic neuropathy: findings on magnetic resonance neurography
Agnollitto,Paulo Moraes; Chu,Marcio Wen King; Simão,Marcelo Novelino; Nogueira-Barbosa,Marcello HenriqueAbstract Injuries of the sciatic nerve are common causes of pain and limitation in the lower limbs. Due to its particular anatomy and its long course, the sciatic nerve is often involved in diseases of the pelvis or leg. In recent years, magnetic resonance neurography has become established as an important tool for the study of peripheral nerves and can be widely applied to the study of the sciatic nerve. There...
Ischiofemoral impingement secondary to valgus intertrochanteric osteotomy: a ca...
Carvalho,Alice Duarte de; Garcia,Flávio Luís; Nogueira-Barbosa,Marcello HenriqueAbstract We report an unusual case of ischiofemoral impingement secondary to valgus intertrochanteric osteotomy. The osteotomy was performed for treatment of epiphysiolysis of the left femoral head.