Abstract：
:This article addresses the dependence of the image characteristics in MR imaging of the orbit. Among the variables discussed are signal-to-noise (SNR), field of view (FOV), spatial resolution, and their interdependence. It is further shown how image contrast can be controlled by judicious choice of pulse timing parameters and how contrast depends on the intrinsic tissue MR parameters T1, T2, and proton density.
journal_name
Radiol Clin North Amjournal_title
Radiologic clinics of North Americaauthors
Wehrli FW,Kanal Esubject
Has Abstractpub_date
1987-05-01 00:00:00pages
419-27issue
3eissn
0033-8389issn
1557-8275journal_volume
25pub_type
杂志文章,评审abstract：:In the chest, the indications for nuclear medicine studies are broader and more varied in children than in adults. In children, nuclear medicine studies are used to evaluate congenital and developmental disorders of the chest, as well as diseases more typical of adults. In the chest, pediatric nuclear medicine uses th...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2011.06.012
更新日期：2011-09-01 00:00:00
abstract：:Musculoskeletal traumatic injuries in children demonstrate characteristic imaging findings. The physis is the most susceptible structure to traumatic injury. The periosteum in children plays a key role in rapid bone healing and stability. The main complications of fractures in children are premature physeal closure, p...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2017.02.011
更新日期：2017-07-01 00:00:00
abstract：:MR and CT are complementary studies in evaluating inflammatory disease or neoplasms of the mastoid and middle ear cavities. CT should be performed prior to MR in the evaluation of patients with primary temporal bone pathology because of its ability to detect and delineate both soft tissue and bony abnormalities. CT sh...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1989-03-01 00:00:00
abstract：:The presence of multiple intestinal air-fluid levels and the distention of jejunum and colon are common and expected sequelae of small bowel bypass procedures for morbid obesity. The radiologist must be familiar with these findings in order to avoid the misdiagnosis of bowel obstruction. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1976-12-01 00:00:00
abstract：:This article reviews the major contributions to our understanding of the rheumatic diseases. These include the first definite evidence of linkage between genes controlling the immune response and the major histocompatibility complex genotype; the recognition of the types and the role of the many crystals in arthritis;...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1988-11-01 00:00:00
abstract：:Image-guided renal biopsies have an increasing role in clinical practice. Renal mass and renal parenchymal biopsy indications, techniques, and other clinical considerations are reviewed in this article. Image-guided renal mass ablation shows significant promise and increasing clinical utility as more studies demonstra...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2016.10.013
更新日期：2017-03-01 00:00:00
abstract：:This article serves as a practical reference to optimize the performance of computed tomography colonography in the detection of colorectal neoplasia. A specific protocol in use at 2 US university programs as well as defined interpretation strategies will be described. With this framework in place, various clinical pe...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2018.05.004
更新日期：2018-09-01 00:00:00
abstract：:Computed tomography (CT) imaging of the kidney, ureter, and bladder permit accurate and prompt diagnosis or exclusion of traumatic injuries, without the need to move the patient to the fluoroscopy suite. Real-time review of imaging permits selective delayed imaging, reducing time on the scanner and radiation dose for ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2015.02.005
更新日期：2015-07-01 00:00:00
abstract：:With the widespread acceptance of ultrasonography and computed tomography for the evaluation of renal masses, the role of guided renal cyst puncture in the evaluation of a suspected renal cyst has undergone revision in recent years. In this article, the authors review the technique, interpretation, and complications o...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1986-12-01 00:00:00
abstract：:MR imaging has rapidly assumed an important role in the diagnosis of congenital anomalies of the aortic arch and pulmonary arteries. Because it is noninvasive and does not involve the use of ionizing radiation, it is particularly useful in children and in clinical settings that require serial follow-up studies, such a...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1989-11-01 00:00:00
abstract：:Magnetic resonance (MR) has noninvasively imaged the proximal coronary arteries, areas of infarction, and a variety of congenital heart lesions. Further technical improvement may extend cardiac MR from the realm of research to clinical utility. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1984-12-01 00:00:00
abstract：:Normal reproduction requires healthy female anatomy. Cervical, uterine, tubal, ovarian, and peritoneal factors can coexist and cause female infertility. Ultrasound, hysterosalpingography, MR imaging, and fallopian tube catheterization are the radiologists' armamentarium for diagnosis. This article illustrates importan...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(03)00064-2
更新日期：2003-07-01 00:00:00
abstract：:Whereas the skeletal, anatomic, and clinical aspects of this condition have been scrutinized in detail, the radiologic changes have received less attention. In this discussion the plain film changes are briefly reviewed, and emphasis is directed toward the myelographic manifestations that reflect intraspinal and intra...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1977-08-01 00:00:00
abstract：:We believe that the preponderance of evidence suggests that MRI is less accurate than conventional mammography in the diagnosis of primary cancer of the breast. Thus, it currently has no established place in algorithms for the evaluation of patients suspected of having breast cancer. MRI could be used to evaluate mass...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1988-05-01 00:00:00
abstract：:Although there currently is no evidence of reduced breast cancer mortality for screening women at high risk with mammography, magnetic resonance (MR) imaging, or ultrasonography (US), the presumptive evidence of early cancer detection provided by numerous observational studies has led to the publication of guidelines ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2010.06.012
更新日期：2010-09-01 00:00:00
abstract：:Fibro-osseous and cartilaginous lesions of the orbit and facial region share overlapping clinical, radiologic, and pathologic features that may lead to diagnostic confusion and possible misdiagnosis. The value of imaging studies in the histopathologic diagnosis of these lesions cannot be overemphasized. The histopatho...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70243-8
更新日期：1998-11-01 00:00:00
abstract：:From technical and interpretative perspectives, upper extremity computed tomographic angiography (CTA) is one of the more challenging vascular CTA applications. Synchronizing the relatively large scan coverage with a single bolus of contrast medium requires precise selection of acquisition and contrast delivery parame...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2010.02.022
更新日期：2010-03-01 00:00:00
abstract：:Diagnostic confirmation through tissue sampling plays a central role in managing patients with suspected lung malignancy. Tissue samples may be obtained in various ways using bronchoscopy, computed tomography guidance, or surgery. Multidisciplinary discussion between members of the lung cancer care team is helpful in ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2012.05.001
更新日期：2012-09-01 00:00:00
abstract：:Pulmonary embolism is a common disease entity that is difficult to diagnose accurately by noninvasive methods. Ventilation-perfusion is a pivotal study in the evaluation of patients with suspected pulmonary embolism. The role of standard and newer modalities in evaluating pulmonary embolism is discussed in this articl...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1985-09-01 00:00:00
abstract：:Liver transplant is the treatment of choice for end-stage liver disease. Management of transplant patients requires a multidisciplinary approach, with radiologists playing a key role in identifying complications in both symptomatic and asymptomatic patients. Ultrasonography remains the investigation of choice for the ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2015.09.004
更新日期：2016-03-01 00:00:00
abstract：:Magnetic resonance imaging provides superb anatomic detail and greater sensitivity to the detection of most lesions than any other imaging modality. The topics covered in this article include the physical principles of MR imaging and imaging of normal renal anatomy and pathologic renal entities, including pathologic c...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1984-06-01 00:00:00
abstract：:Pelvic pain during the first trimester of pregnancy can pose a challenge to the clinician. The noninvasive nature, safety, and reliability of ultrasonography make it the diagnostic method of choice for pregnant patients who have pelvic pain. Sonography provides information that allows for diagnosis of both pregnancy-r...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2006.10.015
更新日期：2006-11-01 00:00:00
abstract：:The radiologic evaluation of sepsis of unknown origin has changed dramatically since the introduction of cross-sectional imaging. Interventional procedures such as abscess drainage, cholecystostomy, biliary drainage, nephrostomy, and fluid aspiration have reduced the morbidity and mortality associated with occult sour...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1996-01-01 00:00:00
abstract：:Fast MR imaging protocols pave the way for more widespread use of MR imaging to evaluate emergency room trauma patients. This article reviews technical developments and protocols facilitating rapid imaging, conventional applications of MR imaging to evaluate soft tissue injuries, and newer applications in which MR ima...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70140-8
更新日期：1999-09-01 00:00:00
abstract：:Acute pancreatitis is an acute inflammatory process of the pancreatic gland with increasing incidence worldwide. Usually the clinical presentation and course are mild, with an uneventful recovery. In 10% to 20% of patients, however, local and systemic complications develop, resulting in significant morbidity and morta...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2012.03.015
更新日期：2012-05-01 00:00:00
abstract：:The association of clinically apparent varicoceles with male subfertility and infertility has been noted in the urology literature since the late nineteenth century, and surgical ligation of varicoceles has been considered appropriate therapy in an attempt to improve semen quality and increase fertility for the past 4...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1991-05-01 00:00:00
abstract：:Many changes have occurred in the past decade in the imaging of the breast. These improvements have led to more sensitive and specific breast imaging and to the widespread use of minimally invasive biopsy techniques. They have also facilitated a closer working relationship between breast imager and surgeon and have co...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(01)00006-9
更新日期：2002-05-01 00:00:00
abstract：:Swallowing requires the coordinated action of the alimentary tract from the oral cavity to the gastroesophageal junction. Any structural or functional abnormality along this pathway will interfere with swallowing. The "barium swallow" or pharyngoesophagogram requires examination of the oral cavity, pharynx, esophagus,...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1993-11-01 00:00:00
abstract：:Successful use of double-contrast techniques requires skill both in performing and interpreting the examination. To perform the examination properly, great care must be taken in evaluating the coating of the mucosal surface. An appropriate barium suspension designed for double-contrast radiography must be used. The ne...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1982-12-01 00:00:00
abstract：:Sarcoidosis, a systemic disease of unknown cause, frequently involves the eye, orbit, and central nervous system. The MR imaging findings of orbital and optic pathway sarcoidosis may closely resemble several other orbital and intracranial diseases. This article reviews MR imaging findings of sarcoidosis when it involv...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70079-8
更新日期：1999-01-01 00:00:00
