abstract：:In neonates and infants with congenital heart disease (CHD), cardiovascular magnetic resonance (CMR) is an established imaging modality in all patients in whom echocardiography does not provide sufficient information and definitive diagnosis. CMR is noninvasive, and does not involve vascular catheterization or ionizin...

journal_title：Magnetic resonance imaging clinics of North America

authors： Valsangiacomo Buechel ER,Fogel MA

更新日期：2011-11-01 00:00:00

abstract：:The superior tissue contrast and flexible imaging planes afforded by magnetic resonance imaging (MRI) versus competing technologies permit optimal depiction of the pelvic viscera. Targeted protocols developed for specific pelvic visceral organs highlight important anatomic features that may not be imaged by other moda...

journal_title：Magnetic resonance imaging clinics of North America

authors： Wasnik AP,Mazza MB,Liu PS

更新日期：2011-08-01 00:00:00

abstract：:The newer magnetic resonance (MR) imaging methods can give insights into the initiation, progression, and eventual treatment of osteoarthritis. Sodium imaging is specific for changes in proteoglycan (PG) content without the need for an exogenous contrast agent. T1ρ imaging is sensitive to early PG depletion. Delayed g...

journal_title：Magnetic resonance imaging clinics of North America

authors： Choi JA,Gold GE

更新日期：2011-05-01 00:00:00

abstract：:Conventional MR imaging provides low specificity in the differential diagnosis of musculoskeletal (MSK) tumors and is unable to offer information about the extent of tumoral necrosis and the presence of viable cells, information crucial to assess treatment response and prognosis. Therefore, diffusion-weighted imaging ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Costa FM,Ferreira EC,Vianna EM

更新日期：2011-02-01 00:00:00

abstract：:Imaging variants of the elbow and pitfalls can be disconcerting and can lead to diagnostic mistakes. Inhomogeneities in the magnetic field and coil position can result in signal changes that may simulate abnormality. Bone signal and morphology variants, such as the islands of red marrow and the pseudodefect of the cap...

journal_title：Magnetic resonance imaging clinics of North America

authors： Sampaio ML,Schweitzer ME

更新日期：2010-11-01 00:00:00

abstract：:Hepatic perfusion imaging with magnetic resonance (MR) imaging is an emerging technique for quantitative assessment of diffuse hepatic disease and hepatic lesion blood flow. The principal method that has been used is based on T1 dynamic contrast-enhanced MR imaging. Perfusion imaging shows promise in the assessment of...

journal_title：Magnetic resonance imaging clinics of North America

authors： Haider MA,Farhadi FA,Milot L

更新日期：2010-08-01 00:00:00

abstract：:Neoadjuvant chemotherapy is now widely used in the management of locally advanced breast cancer (LABC). Early initiation of systemic therapy can improve overall and disease-free survival for patients with LABC or inflammatory cancer. MR imaging with intravenous contrast and advanced MR imaging techniques provide new o...

journal_title：Magnetic resonance imaging clinics of North America

authors： Le-Petross HC,Hylton N

更新日期：2010-05-01 00:00:00

abstract：:MR imaging-guided interventions are well established in routine patient care in many parts of the world. There are many approaches, depending on magnet design and clinical need, based on MR imaging providing excellent inherent tissue contrast without ionizing radiation risk for patients. MR imaging-guided minimally in...

journal_title：Magnetic resonance imaging clinics of North America

authors： Fennessy FM,Tuncali K,Morrison PR,Tempany CM

更新日期：2010-02-01 00:00:00

abstract：:This article addresses the role of MR imaging in the evaluation of meniscal injuries, with emphasis placed on the common meniscal injuries, including horizontal, longitudinal, radial, and flap tears. An understanding of typical meniscal postoperative findings, together with those factors responsible for the misinterpr...

journal_title：Magnetic resonance imaging clinics of North America

authors： Alatakis S,Naidoo P

更新日期：2009-11-01 00:00:00

abstract：:The knee is one of the joints most commonly injured during sport-related activities in the pediatric population. Although physical examination and conventional radiography remain the most important tools for determining the extent of the injury, clinical assessment of the knee may be limited in patients with pain, swe...

journal_title：Magnetic resonance imaging clinics of North America

authors： Sanchez R,Strouse PJ

更新日期：2009-08-01 00:00:00

abstract：:Diffusion and perfusion MR imaging have proven to be highly useful in the clinical description and understanding of acute and hyperacute ischemic stroke. In this article, the authors give a brief overview of the basic concepts of diffusion and perfusion imaging and describe some of the current developments, applicatio...

journal_title：Magnetic resonance imaging clinics of North America

authors： Harris AD,Coutts SB,Frayne R

更新日期：2009-05-01 00:00:00

abstract：:Four-dimensional time-resolved MR angiography (4D-MRA) using keyhole imaging techniques is a new method of performing contrastenhanced vascular imaging. Combining parallel imaging and keyhole imaging techniques, it is possible to obtain dynamic MRA scans up to 60 times faster, thereby achieving subsecond sampling of t...

journal_title：Magnetic resonance imaging clinics of North America

authors： Parmar H,Ivancevic MK,Dudek N,Gandhi D,Geerts L,Hoogeveen R,Mukherji SK,Chenevert TL

更新日期：2009-02-01 00:00:00

abstract：:Recent developments in MR imaging techniques have enabled the functional assessment of the uterus. Cine MR imaging is a useful tool for evaluating uterine kinematic functions derived from myometrial contractility, and for investigating the alteration of uterine contractility in a variety of conditions and gynecologic ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Nakai A,Koyama T,Fujimoto K,Togashi K

更新日期：2008-11-01 00:00:00

abstract：:Wilms' tumor is the most common solid renal tumor in children. Imaging plays a crucial role in the evaluation of the primary tumor and regional and metastatic disease. This article reviews the biologic, clinical, and MR imaging features of this tumor and other renal tumors that can mimic Wilms' tumor. ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Siegel MJ,Chung EM

更新日期：2008-08-01 00:00:00

abstract：:The thoracic venous system can be visualized and characterized well with MR imaging. In this article, MR sequences that are suited for this purpose (including the more advanced techniques) are reviewed. The normal thoracic venous anatomy and a brief summary of its embryogenesis is provided. The appearances of congenit...

journal_title：Magnetic resonance imaging clinics of North America

authors： Rahmani N,White CS

更新日期：2008-05-01 00:00:00

abstract：:MR imaging provides soft tissue detail unparalleled by any other modality for the assessment of turf toe injuries and has become standard in certain populations of athletic patients. Principal knowledge of the anatomy and appropriate imaging techniques is central for accurate imaging evaluation. The precise determinat...

journal_title：Magnetic resonance imaging clinics of North America

authors： Crain JM,Phancao JP,Stidham K

更新日期：2008-02-01 00:00:00

abstract：:With recent technical and clinical advances, adenosine stress perfusion MRI has evolved from a promising research tool to an everyday clinical test. This article reviews the current state of stress perfusion MRI. Specifically, it addresses the following topics: validation of stress perfusion MRI in preclinical studies...

journal_title：Magnetic resonance imaging clinics of North America

authors： Kim HW,Klem I,Kim RJ

更新日期：2007-11-01 00:00:00

abstract：:Over the last decade, cardiac magnetic resonance imaging has increasingly evolved into a useful diagnostic tool among the radiology and cardiology communities. Ongoing improvements in MR imaging hardware, processing speed, and pulse sequence development have laid the foundation for rapid progress in cardiac MR imaging...

journal_title：Magnetic resonance imaging clinics of North America

authors： Nael K,Fenchel M,Saleh R,Finn JP

更新日期：2007-08-01 00:00:00

abstract：:MR imaging using anatomic, chemical, and functional information offers huge potential for the management of the gynecologic patient. By differentiating benign from malignant disease with very high specificity, it can aid the selection of patients requiring further treatment and determine the level of urgency. Staging ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Turnbull L,Booth S

更新日期：2007-08-01 00:00:00

abstract：:The use of MR imaging in assessing lumbar bone marrow first requires an understanding of the bone marrow's normal composition and the various imaging sequences available for use. One of the most useful sequences is the T1-weighted spin-echo sequence. This sequence may be combined with other sequences such as T2-weight...

journal_title：Magnetic resonance imaging clinics of North America

authors： Alyas F,Saifuddin A,Connell D

更新日期：2007-05-01 00:00:00

abstract：:Cystic lesions around the knee comprise a diverse group of entities, ranging from benign cysts to complications of underlying diseases such as infection, arthritis, and malignancy. Their diverse causes result in varied prognoses and therapeutic options. Although the presentation of cystic masses may be similar, their ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Beaman FD,Peterson JJ

更新日期：2007-02-01 00:00:00

abstract：:Ultrasonography is the primary prenatal screening modality used in the evaluation of the fetus and the maternal pelvis. However, fetal MR imaging plays a complementary role to prenatal ultrasound in the evaluation of the fetus with suspected abnormalities. MR imaging's role includes confirming or excluding possible le...

journal_title：Magnetic resonance imaging clinics of North America

authors： Dietrich RB,Cohen I

更新日期：2006-11-01 00:00:00

abstract：:The adequate management of individuals who carry a high lifetime risk for breast cancer is still an unsettled issue. This holds especially true for subjects with documented or suspected germline mutation of a breast cancer susceptibility gene. These women face a lifetime risk for breast cancer of up to 80%, which is, ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Kuhl CK

更新日期：2006-08-01 00:00:00

abstract：:DTI seems to offer the possibility of adding important information to presurgical planning. Although experience is limited, DTI seems to provide useful local information about the structures near the tumor, and this seems to be useful in planning. In the future, DTI may provide an improved way to monitor intraoperativ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Cruz LC Jr,Sorensen AG

更新日期：2006-05-01 00:00:00

abstract：:This article reviews the complex normal anatomy of the hip joint and its surrounding structures on MR imaging, including MR arthrography.Thorough knowledge of the normal appearance of the marrow and osseous and articular anatomy as well as the ligaments, tendons, and surrounding muscles of the hip is essential for ima...

journal_title：Magnetic resonance imaging clinics of North America

authors： Chatha DS,Arora R

更新日期：2005-11-01 00:00:00

abstract：:With increasing participation in professional and recreational athletics, activity-limiting pelvic and groin pain presents a growing challenge for patients and health care providers. The causes of musculoskeletal-related groin pain among athletes are diverse, with considerable overlap in history and physical examinati...

journal_title：Magnetic resonance imaging clinics of North America

authors： Nelson EN,Kassarjian A,Palmer WE

更新日期：2005-11-01 00:00:00

abstract：:The motivations for developing MR-guided minimally invasive therapy include its excellent soft tissue contrast, tomographic imaging in any direction (as opposed to projection imaging as in fluoroscopy), the absence of ionizing radiation,the abundance of contrast mechanisms (including bright blood pulse sequences that ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Derakhshan JJ,Duerk JL

更新日期：2005-08-01 00:00:00

abstract：:Performing RFA procedures under MR imaging involves two distinct processes: interactive guidance of the RF electrode into the targeted tumor and monitoring the effect of therapy. The justification for using MR imaging for electrode guidance is quite similar to its use to guide biopsy and aspiration procedures, where M...

journal_title：Magnetic resonance imaging clinics of North America

authors： Nour SG,Lewin JS

更新日期：2005-08-01 00:00:00

abstract：:This article reviews fundamental principles and sequence techniques that have been used successfully for imaging diseases of the abdomen and pelvis at 1.5 Tesla. This article also introduces concepts and the specific alteration of sequence parameters for optimization of abdominal-pelvic imaging at 3 Tesla. ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Martin DR,Friel HT,Danrad R,De Becker J,Hussain SM

更新日期：2005-05-01 00:00:00

abstract：:MR imaging is a useful modality for evaluating diseases of the bladder. MR imaging can detect and stage bladder cancer by determining the presence and depth of muscle invasion. Direct multiplanar imaging and superb soft-tissue contrast make MR imaging an ideal modality for evaluating less common neoplastic diseases of...

journal_title：Magnetic resonance imaging clinics of North America

authors： Mallampati GK,Siegelman ES

更新日期：2004-08-01 00:00:00

abstract：:Many tumor and tumor-like lesions of the bone and soft tissues may involve the upper extremity. Certain lesions, however, are unique to this location. As is usually the case, MR is most sensitive to detection and most accurate in depicting the extent of involvement of these lesions. MR signal characteristics may aid i...

journal_title：Magnetic resonance imaging clinics of North America

authors： Shankman S,Kolla S,Beltran J

更新日期：2004-05-01 00:00:00

abstract：:MRM is a useful imaging technique that can be incorporated into routine spine MR imaging protocols without a significant increase in imaging time or patient discomfort. When combined with high quality, sequential (no inter-slice gap), axial images of the spine, the authors have found that it decreases the surgeon's ne...

journal_title：Magnetic resonance imaging clinics of North America

authors： Stone JA

更新日期：2003-11-01 00:00:00

abstract：:Continuous technologic developments and research have increased the clinical applications of MT, HASTE, and FLAIR imaging in neuroradiology. HASTE has become the MR imaging sequence of choice for fetal neuroimaging. Other promising uses, such as for diffusion-weighted imaging, have not been fully exploited. FLAIR has ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Rumboldt Z,Marotti M

更新日期：2003-08-01 00:00:00

abstract：:Hip arthroscopy is being used increasingly for the diagnosis and treatment of hip disorders. MR imaging performed with appropriate technical considerations may aid not only in preoperative planning but in the appropriate selection of patients, which tends to lead to better postoperative results. Although the painful h...

journal_title：Magnetic resonance imaging clinics of North America

authors： Boutin RD,Newman JS

更新日期：2003-05-01 00:00:00

abstract：:CMR is a rapidly developing new modality with applications in clinical cardiology for detection and assessment of myocardial ischemia and viability. CMR perfusion results for the detection of ischemia in comparison with stress echocardiography and scintigraphic techniques are reasonable, but all the studies reported t...

journal_title：Magnetic resonance imaging clinics of North America

authors： Wagner A,Mahrholdt H,Sechtem U,Kim RJ,Judd RM

更新日期：2003-02-01 00:00:00

abstract：:The application of fast MRI techniques provides the opportunity to image function in various systems of the head and neck. Incorporating fMRI techniques into head and neck imaging protocols provides the potential for the head and neck radiologist to investigate structural integrity and function and thus play a central...

journal_title：Magnetic resonance imaging clinics of North America

authors： Mosier K,Gilbert R

更新日期：2002-11-01 00:00:00

abstract：:The assessment of sinonasal malignancies requires a multidisciplinary team approach. Advances in pretherapeutic imaging have significantly contributed to the management of sinonasal tumors. CT and MR imaging play complementary roles in the assessment and staging of these malignancies by determining the presence or abs...

journal_title：Magnetic resonance imaging clinics of North America

authors： Loevner LA,Sonners AI

更新日期：2002-08-01 00:00:00

abstract：:Although abdominal and pelvic vascular disease is much less common in children than in adults, MR angiographic techniques widely used in adults can also be readily applied in the pediatric population with suspected vascular disease. MR techniques, equipment, and image analysis software are in a continual state of deve...

journal_title：Magnetic resonance imaging clinics of North America

authors： Strouse PJ

更新日期：2002-05-01 00:00:00

abstract：:This article discusses MR imaging of infective liver lesions including pyogenic liver abscesses, amebic liver abscesses, echinococcal disease, hepatic fungal abscesses, granulomatous hepatic infections, schistosomiasis, and fascioliasis. ...

journal_title：Magnetic resonance imaging clinics of North America

authors： Balci NC,Sirvanci M

更新日期：2002-02-01 00:00:00

abstract：:This article reviews the utility of MR imaging in the evaluation of liver transplantation. Issues related to the prospective transplant donor and recipient, such as inclusion and exclusion criteria, indications and contraindications, and imaging of donor anatomy and recipient pathology, are discussed. Post-transplanta...

journal_title：Magnetic resonance imaging clinics of North America

authors： Freedman BJ,Lowe SC,Saouaf R

更新日期：2001-11-01 00:00:00