Abstract：
:Radiographic imaging of the chest remains one of the most important and most challenging problems in radiology. The wide range of information that results from the great variation of radiation behind the lungs compared with that behind the mediastinum creates a very difficult imaging problem. The introduction and continued investigation of digital techniques have presented a potential solution to this problem. In this article, the authors describe the image-processing techniques of histogram equalization and adaptive filtration in digital chest imaging.
journal_name
Radiol Clin North Amjournal_title
Radiologic clinics of North Americaauthors
Johnson GA,Danieley N,Ravin CEsubject
Has Abstractpub_date
1985-06-01 00:00:00pages
335-40issue
2eissn
0033-8389issn
1557-8275journal_volume
23pub_type
杂志文章abstract：:With the increasing availability of curative surgical techniques for primary and secondary hepatic neoplasms, the tasks for clinical imaging of patients suspected of having liver cancer have become more exacting. Detection of tumor, differential diagnosis of individual nodules, and mapping the anatomic extensions of m...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:Meniscal injuries are common. Magnetic resonance imaging is considered the imaging modality of choice in diagnosing meniscal pathologic conditions in the nonoperative knee. Meniscal-preserving surgery is becoming more frequent, with a resultant increase in postoperative meniscal imaging, which is particularly challeng...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2012.10.008
更新日期：2013-05-01 00:00:00
abstract：:Spinal stenosis in either the cervical or lumbar spinal segments is one of the most common indications for spine imaging and intervention, particularly among the elderly. This article examines the pathophysiology and imaging of the corresponding clinical syndromes, cervical spondylotic myelopathy or neurogenic intermi...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2012.04.007
更新日期：2012-07-01 00:00:00
abstract：:The leukemias and lymphomas together account for over 40% of the malignant disorders in childhood. Radiologists who deal with these patients must understand some aspects of the biology, natural history, and clinical manifestations of the disease in order to provide useful imaging consultative services. This article su...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1997-11-01 00:00:00
abstract：:Pulmonary infections are among the most common causes of morbidity and mortality worldwide, and contribute substantially to annual medical expenditures in the United States. Despite the availability of antimicrobial agents, pneumonia constitutes the sixth most common cause of death and the number one cause of death fr...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2005.10.009
更新日期：2006-03-01 00:00:00
abstract：:Ultrasound scan is an invaluable tool in the diagnosis and treatment of disorders of the musculoskeletal system. Core concepts that are common to most ultrasound-guided procedures are reviewed, including an in-depth discussion regarding the use of injectable corticosteroids. Various aspects of intra-articular, intrate...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2008.02.003
更新日期：2008-05-01 00:00:00
abstract：:Important aspects of ischemic heart disease are currently evaluated with magnetic resonance imaging and phosphorus-31 spectroscopy. The combined use of magnetic resonance imaging and spectroscopy will enable the noninvasive visualization of the coronary arteries, provide flow velocity and volume data in the coronary c...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1994-05-01 00:00:00
abstract：:The overhead throwing motion is a complex sequence of maneuvers that requires coordinated muscle activity in the upper and lower extremities. The shoulder and elbow are subject to multidirectional forces and are particularly vulnerable to injury during specific phases of the overhead throwing motion. Ligamentous, tend...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2012.09.016
更新日期：2013-03-01 00:00:00
abstract：:Inflammatory bowel disease has a variety of local and systemic complications that contribute to the morbidity and mortality associated with the disease. The radiologist plays an important role in the evaluation of these complications. ...
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 historical, epidemiologic, clinical, and pathologic features of the phakomatoses are briefly reviewed in this article. The central nervous system manifestations of the phakomatoses on MR also are illustrated and described. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1988-07-01 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：: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：:Congenital nonvascular anomalies of the lung can be subdivided into those affecting the bronchial tree and those affecting parenchymal abnormalities. Embryologic development of the lung is briefly reviewed to facilitate an understanding of developmental pulmonary anomalies. Clinical, radiographic, and therapeutic aspe...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1991-03-01 00:00:00
abstract：:Imaging has a key role in the identification of bronchiectasis. Over the years, imaging tests have become increasingly accurate in depicting the features of early bronchiectasis. This article covers the clinical, pathologic, and functional features of bronchiectasis; high-resolution CT scan technique; the signs of bro...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70009-9
更新日期：1998-01-01 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：: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：:The role of imaging in the diagnosis and management of prostate is reviewed. Transrectal ultrasonography, which can be used to guide biopsy, is most frequently used imaging technique in cancer detection. For determining the extent of disease, CT and MR imaging are the most commonly used modalities; bone scintigraphy a...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2006.10.008
更新日期：2007-01-01 00:00:00
abstract：:Diagnosis and intervention in pediatric GI bleeding is the shared responsibility of pediatric endoscopists, radiologists, and surgeons. Brisk hemorrhage, though alarming, is most often self-limited; few cases require urgent surgery before diagnostic evaluation is accomplished. The choice between endoscopic and radiogr...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1997-07-01 00:00:00
abstract：:The SCAVMs are high-flow lesions that present at a younger age, during the second or third decades of life. The most common presenting symptoms are subarachnoid hemorrhage and hematomyelia. Endovascular treatment of these lesions has become an important adjunct to surgical management. Complete occlusion is possible by...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1988-09-01 00:00:00
abstract：:Ultrasound is a valuable diagnostic test throughout the first trimester of pregnancy. Early in this trimester, it is used to distinguish between normal intrauterine, failed intrauterine, and ectopic pregnancies. Later it can be used with maternal blood tests to screen for trisomy 21 and other forms of aneuploidy, and ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2014.07.004
更新日期：2014-11-01 00:00:00
abstract：:This article outlines the benefits of imaging osteoarthritis with ultrasonography and some of the limitations. Pathologic structures able to be identified in osteoarthritis with ultrasonography are reviewed, with a focus on the validity of the technique. Common ultrasonographic abnormalities seen in osteoarthritis in ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2009.04.007
更新日期：2009-07-01 00:00:00
abstract：:The history of mammography can be arbitrarily subdivided into three periods: The Age of Pioneers highlights the work of Salomon, Kleinschmidt, Warren, Vogel, Seabold, Gershon-Cohen, Leborgne, Egan, Gallager, Martin, Dodd, Strax and their colleagues; The Age of Technical Progress adds the names of Gould, Wolfe, and Gro...
journal_title：Radiologic clinics of North America
pub_type： 历史文章,杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:Prostate cancer is the most prevalent newly diagnosed noncutaneous malignancy in men. With the continued use of prostate-specific antigen screening, there has been a dramatic rise in the number of prostate biopsied performed. Transrectal ultrasonography (TRUS) is an essential tool used for detecting prostate pathology...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2006.07.001
更新日期：2006-09-01 00:00:00
abstract：:Since the mid 1980s, sonography has been used to evaluate the rotator cuff. It is inexpensive, well tolerated, rapidly performed, and accurate. With the recent improvements in imaging equipment and refinements in scanning technique, an increasing number of radiologists are performing shoulder sonography. This article ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70128-7
更新日期：1999-07-01 00:00:00
abstract：:Acute abdominal pain in pregnancy presents diagnostic and therapeutic challenges. Ultrasound remains the primary imaging investigation of the pregnant abdomen because of its availability, portability, and lack of ionizing radiation. MR imaging has been shown to be useful in the diagnosis of gynecologic and obstetric p...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2015.06.013
更新日期：2015-11-01 00:00:00
abstract：:Breast MR imaging is the most sensitive modality for breast cancer detection. This high sensitivity has led to widespread adoption of this technique, particularly in screening women at elevated risk for breast cancer. Despite its high sensitivity, standard breast MR imaging protocols are limited by moderate specificit...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2016.12.009
更新日期：2017-05-01 00:00:00
abstract：:The role of MR imaging as a noninvasive technique in the detection and evaluation of musculoskeletal diseases is unquestionable. Most of the studies reported in the literature are based on high-field MR imaging. Initial studies performed with low-field-strength have reported unsatisfactory results in the assessment of...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2005.02.001
更新日期：2005-07-01 00:00:00
abstract：:Given the high prevalence, increasing incidence, and significant morbidity and mortality related to hepatocellular carcinoma (HCC), a robust and cost-effective screening and surveillance program is needed. Most societies recommend ultrasound for HCC screening, despite lack of standardization in imaging acquisition, re...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2017.06.012
更新日期：2017-11-01 00:00:00
abstract：:Sonography and computed tomography play complementary roles in imaging mass lesions in the salivary glands and their surroundings. Ninety per cent of parotid tumors originate from the superficial lobe, and we consider sonography to be the method of choice for imaging these lesions. The sensitivity of high-resolution s...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1985-03-01 00:00:00
abstract：:Disease of the thoracic aorta can present with a broad clinical spectrum of symptoms and signs. The accepted diagnostic gold standard, selective digital subtraction angiography, is now being challenged by state-of-the-art CT angiography (CTA) and MR angiography(MRA). Currently, in many centers, cross-sectional imaging...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2004.03.005
更新日期：2004-05-01 00:00:00
