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 masses with mammographically smooth, well-defined margins, since high signal intensity (greater than fat) in a T2-weighted image is a highly specific indicator of benignancy in such lesions. However, most of these masses are cysts and can be reliably and less expensively identified as such by sonography. Nonetheless, MRI might be used to re-evaluate a smooth, well-defined mass if sonography has failed to identify the lesion as a cyst. MRI might be particularly useful in this regard if a lesion is difficult to evaluate by other modalities because it is located adjacent to the chest wall, is deep within a very large breast, or is obscured by a breast prosthesis. MRI with Gd-DTPA may be useful in evaluating radiographically dense breasts or in differentiating breast malignancies from irregular dysplastic or scar tissue. However, further investigation of this technique is needed. It has been hoped that in vivo measurement of T1 and T2 or in vivo NMR spectroscopy might improve the accuracy of noninvasive diagnosis of cancer of the breast. However, there is currently no credible evidence that in vivo measurements of relaxation times provide useful indexes for the diagnosis of breast cancer. In vivo NMR spectroscopy of nuclei other than P may ultimately provide reliable criteria for noninvasive diagnosis of breast cancer in humans, but the technique is currently in its infancy.
journal_name
Radiol Clin North Amjournal_title
Radiologic clinics of North Americaauthors
Turner DA,Alcorn FS,Adler YTsubject
Has Abstractpub_date
1988-05-01 00:00:00pages
673-87issue
3eissn
0033-8389issn
1557-8275journal_volume
26pub_type
杂志文章,评审abstract：:Marked increases in national health care costs, along with governmental coverage of health care costs for the elderly under Medicare, have resulted in increased government regulation of medical reimbursement rates. Private insurers and HMOs now provide reimbursements that are frequently the same or lower than those fr...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70203-7
更新日期：2000-07-01 00:00:00
abstract：:In this article, the author discusses his experience using a superconducting magnet for evaluation of the pancreas. The discussion includes evaluation of neoplastic and inflammatory disease of the pancreas and comparison of MRI with CT scanning. ...
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：:The frequency and distribution of fractures of the thoracic and lumbar spine are reviewed. Classifications of thoracolumbar spine injuries are considered. Compression or wedge fractures, burst fractures, lap seat-belt-type injuries, and fracture-dislocations are considered with discussion of findings on conventional r...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1990-03-01 00:00:00
abstract：:The small bowel is subject to a variety of surgical interventions for the treatment of a broad spectrum of disease processes. Most operative procedures applied to the small bowel are straightforward techniques encumbered by few complications, whereas other procedures are considerably more complex and can be associated...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(02)00119-7
更新日期：2003-03-01 00:00:00
abstract：:Several large-scale prospective clinical studies establish the validity of managing probably benign breast lesions with periodic mammographic surveillance as a safe and effective alternative to immediate tissue diagnosis. This approach to mammographic interpretation is now very widely accepted; the American College of...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1995-11-01 00:00:00
abstract：:In the mid-1980s, the incidence of tuberculosis (TB) in the United States increased. Recently, TB became an index diagnosis for AIDS. Chest radiographs in patients with AIDS and TB may be atypical; various features are addressed in this article. Radiologists should be aware of the possibility of TB because this diseas...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1995-07-01 00:00:00
abstract：:Stress cardiac magnetic resonance imaging can provide valuable information for the diagnosis and management of ischemic heart disease (IHD). It plays an important role in the initial diagnosis in patients with acute chest pain, in the diagnosis of complications post myocardial infarction (MI), in the assessment of the...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2014.11.006
更新日期：2015-03-01 00:00:00
abstract：:Arthrography of the elbow is performed infrequently, but may be quite useful in demonstrating the presence, number, and location of intra-articular loose bodies, and in evaluating articular cartilaginous surfaces. Such information may be valuable in the selection of an operative versus a nonoperative course of treatme...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1981-06-01 00:00:00
abstract：:The diagnosis of PHPV is often made difficult by its extremely broad array of clinical manifestations, its etiologic heterogeneity, and frequently opaque ocular media. The CT and MR findings are discussed in terms of how they can be of use in the differential diagnosis of PHPV. The strengths and weaknesses of each of ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1987-07-01 00:00:00
abstract：:Accurate recognition and reporting of spine abnormalities on MRI requires knowledge of normal anatomy and its variants. This article deals with common normal variants, points out pitfalls which may be sources of errors in interpretation and describes imaging artifacts which are essential to be recognized and not mista...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(08)70004-6
更新日期：2000-11-01 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：: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：:Indeterminate renal masses remain a diagnostic challenge for lesions not initially characterized as angiomyolipoma or Bosniak I/II cysts. Differential for indeterminate renal masses include oncocytoma, fat-poor angiomyolipoma, and clear cell, papillary, and chromophobe renal cell carcinoma. Qualitative and quantitativ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2020.06.002
更新日期：2020-09-01 00:00:00
abstract：:Computers should play an important role in mammography screening. This paper demonstrates the ability of a low-cost microcomputer-based data management system to speed up and make more efficient many aspects of both day-to-day and overall operation of a mammography screening practice. Specific computer procedures are ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1987-09-01 00:00:00
abstract：:An overview of the pathology of extranodal lymphoma is presented. The emphasis of this presentation is on the classification system of extranodal lymphomas, including both B-cell and T-cell lymphomas, based on their morphology, phenotype, and molecular alterations. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2016.03.001
更新日期：2016-07-01 00:00:00
abstract：:Although a specific diagnosis of the calcified liver mass may not always be possible, there are some morphologic imaging features that help to indicate the diagnosis (Table 1). The radiologist needs to be aware of the wide spectrum of diseases of the liver that can calcify, and the most common causes. Pathologic corre...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70030-0
更新日期：1998-03-01 00:00:00
abstract：:The excretion urogram-nephrotomogram is the most important imaging study in the diagnosis of renal parenchymal infection in children. If renal parenchymal infections are discovered before significant necrosis has occurred, vigorous treatment with appropriate parenteral antibiotics may result in resolution without the ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1977-04-01 00:00:00
abstract：:A number of imaging modalities, such as conventional radiography, arthrography, ultrasonography, and MR imaging, can be used in the evaluation of shoulder pain related to impingement, tendinosis, and rotator cuff tear. Of these techniques, only MR imaging provides anatomic information coupled with superior soft-tissue...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1997-01-01 00:00:00
abstract：:Musculoskeletal disease occurs in association with inflammatory bowel disorders including Crohn's disease and ulcerative colitis, as well as with Whipple's disease; with enteritis caused by Salmonella, Shigella, and Yersinia; and also following intestinal bypass surgery. Extraintestinal causes of musculoskeletal alter...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1987-01-01 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：: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：:Diffusion-weighted imaging (DWI) has become a routine component of clinical MR imaging. Its unique soft tissue contrast mechanism exploits differences in the motion of water molecules in vivo at a biologically meaningful scale. The clinical potential of DWI in lesion detection, characterization, and response assessmen...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2015.01.002
更新日期：2015-05-01 00:00:00
abstract：:It should be clear that there is no prescription for an ideal picture terminal or for an ideal image work station. Image informativeness, the ability to transmit the relevant diagnostic information to the viewer, is the most important medical consideration that has an impact on the individual patient, but short of doi...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:The updated American College of Radiology (ACR) Breast Imaging Reporting and Data System (BI-RADS) has been newly released. This article summarizes the changes and updates that have been made to BI-RADS. The goal of the revised edition continues to be the same: to improve clarification in image interpretation, maintai...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2014.02.008
更新日期：2014-05-01 00:00:00
abstract：:Magnetic resonance (MR) has become an important tool in the evaluation of the child who has congenital heart disease. Current techniques and applications of MR in the evaluation of great vessels, vascular causes of airway obstruction, and the postoperative patient are discussed. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1993-05-01 00:00:00
abstract：:The upper gastrointestinal series traditionally includes fluoroscopy and filming of the esophagus, stomach, and duodenum. Optimal use of each of the available examination techniques in these regions is discussed in this article. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1994-11-01 00:00:00
abstract：:The solitary pulmonary nodule (SPN) is a common radiologic finding. There are different management approaches and the work-up often requires evaluation over a long period of time to establish a benign or malignant diagnosis. Comparison with old examinations and morphologic evaluation of the size, margins, and internal...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2005.01.008
更新日期：2005-05-01 00:00:00
abstract：:We have reviewed the essentials of TKA imaging. Because the purpose of a knee arthroplasty is to relieve pain and improve function, radiographs should be viewed in the context of these goals. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1995-03-01 00:00:00
abstract：:In single-center trials across 42,838 examinations, 150 (0.35%) cancers were identified only sonographically in average-risk women. Over 90% of the 126 women with sonographically depicted cancers had dense or heterogeneously dense parenchyma. Of the 150 cancers, 141 (94%) were invasive, with a mean size of 9 to 11 mm ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2004.04.003
更新日期：2004-09-01 00:00:00
abstract：:Immature skeleton is different from adult skeleton with unique vulnerability to acute and chronic injuries at the growth plate. Recognition and differential diagnosis of inflicted skeletal injury are important. Familiarity with the dynamic changes of growing skeleton in normal children is key to the recognition of pat...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1997-05-01 00:00:00
