Abstract：
:Care must be taken to optimally select settings for collimation, table feed, and reconstruction interval for successful helical CT and associated special application such as CT angiography. Thus, prospective planning is critical for optimal 3-D imaging. Generally, one wishes to minimize all of these parameters to maximize longitudinal resolution; however, one must be aware of the tradeoffs associated with these choices. Pixel noise increases with decreasing collimation. Limiting the table feed to a value equal to the collimation (pitch of 1:1) limits broadening of the effective slice thickness associated with the table motion but also limits the scan coverage. Generally, one may accept a table feed up to twice the collimation (pitch of 2:1) on modern equipment with current software. Reconstruction intervals should also be selected to satisfy the clinical need. When multiplanar and 3-D imaging is desired, the reconstruction interval should be selected such that at least two slices are generated per table increment.
journal_name
Radiol Clin North Amjournal_title
Radiologic clinics of North Americaauthors
Brink JAsubject
Has Abstractpub_date
1995-09-01 00:00:00pages
825-41issue
5eissn
0033-8389issn
1557-8275journal_volume
33pub_type
杂志文章,评审abstract：:One of the single most important considerations in clinical management of the patient with prostate cancer is whether or not metastatic disease is present. The identification of metastatic disease in a patient with newly diagnosed prostate cancer represents an absolute contraindication to definitive local therapies su...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70153-6
更新日期：2000-01-01 00:00:00
abstract：:Each of the various techniques used for the diagnosis and staging of lung cancer has its advantages and limitations (Table 1). Imaging has a major role in guiding these procedures and deciding which of them is most appropriate in a given clinical setting. A CT examination by which the size and location of the parenchy...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70183-4
更新日期：2000-05-01 00:00:00
abstract：:Diagnostic imaging is often used to document the progression of healing and diagnose complications in the patient with musculoskeletal trauma. Common types of fixation devices and their complications are discussed. Guidelines for acceptable positioning and alignment are described. ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1989-09-01 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
abstract：:The importance of this article is fourfold. First, the introduction of workstation technology and the types of image workstations provides readers with a better understanding of the state-of-the-art and availability of digital image-display workstations in the market-place. Second, this article identifies primary proc...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1996-05-01 00:00:00
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：:Osteoarthritis is a disease affecting all joint structures, not just hyaline articular cartilage. It develops as a consequence of injurious activities acting on a vulnerable joint. The correlation between structural changes of the disease and joint symptoms is poor. Risk factors include age, obesity, and joint injury....
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/S0033-8389(03)00161-1
更新日期：2004-01-01 00:00:00
abstract：:Stroke is the third most common cause of death in the United States, and 50 per cent of sources arise in the extracranial carotid arteries. Well-performed vascular surgery provides a low-risk approach in preventing this devastating event if these sources can be identified before the stroke occurs. An awareness of the ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1986-09-01 00:00:00
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 cont...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1985-06-01 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：:This article describes the clinical and imaging roles of MR with respect to the following: neck masses of known or uncertain etiology; staging of cervical metastatic disease; thyroid and parathyroid; and evaluation of the thoracic inlet. Pertinent normal anatomy is highlighted when appropriate. ...
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：:Supply-line deprivation is a major source of developmental fetal pathology. Clinical surveys have tended to emphasize the role of placental failure, although the umbilical cord may also be a site of injury. Supply-line limitations are met by a series of active fetal compensatory maneuvers. These include growth retarda...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1990-01-01 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：:The lacrimal gland region can be involved in a wide spectrum of orbital pathology, including inflammatory, lymphoproliferative, and epithelial tumors. This article focuses on benign and malignant epithelial tumors of lacrimal gland and simulating lesions. The clinical presentations, MR imaging, and pathologic findings...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70089-0
更新日期：1999-01-01 00:00:00
abstract：:Pregnancy predisposes women to a wide array of obstetric and gynecological complications which are often complex, challenging and sometimes life-threatening. While some of these are unique to pregnancy, a few that occur in nonpregnant women are more common during pregnancy. Imaging plays a crucial role in the diagnosi...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2013.07.012
更新日期：2013-11-01 00:00:00
abstract：:This article reviewed the major sports medicine conditions affecting the knee and their MR imaging appearance. MR imaging of the knee is considered efficacious especially in the setting of indeterminate clinical findings and can stratify patients, guiding further surgical management. MR imaging affects the diagnosis a...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(02)00004-0
更新日期：2002-03-01 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：:Ulcerative colitis and Crohn's disease are idiopathic conditions that represent an overlapping clinical spectrum that is commonly referred to as inflammatory bowel disease (IBD). Among the etiopathogenic hypotheses that have been suggested, infectious, genetic, and immunologic factors have received the most attention ...
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：: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：:Transaxial computed tomographic (CT) data can be used to generate images rapidly in the coronal and sagittal planes (two-dimensional CT) and create simulated three-dimensional images. The techniques and advantages of an integrated two-dimensional/three-dimensional CT approach to musculoskeletal trauma are illustrated ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1989-09-01 00:00:00
abstract：:Ischemic colitis accounts for more than half of all cases of gastrointestinal ischemia and constitutes between 1 per 2000 and 3 per 1000 acute hospital admission. It typically affects elderly patients, being a frequent cause of rectal bleeding, abdominal pain, and diarrhea. This article describes the epidemiology, phy...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2008.06.003
更新日期：2008-09-01 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：:MRI has undergone an incredibly rapid evolution, and technical advances are continually occurring. MRI allows for high resolution imaging that can clearly demonstrate a variety of degenerative processes of the spine. High-resolution MRI that gives detailed anatomic information, coupled with the use of MR contrast agen...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章
doi：
更新日期：1988-09-01 00:00:00
abstract：:Acute pelvic pain in the nonpregnant woman is one of the most common conditions requiring emergent medical evaluation in routine clinical practice. Although clinical evaluation and laboratory testing are essential, imaging plays a central role. Although various adnexal and uterine disorders may result in acute pelvic ...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2019.11.002
更新日期：2020-03-01 00:00:00
abstract：:Nephrogenic systemic fibrosis (NSF) is a highly debilitating scleroderma-like disease occurring exclusively in patients with severe or end-stage renal failure. Since the recognition of a link between gadolinium chelates (GCs) used as contrast agents for MR imaging and NSF by two independent European teams in 2006, num...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2009.06.006
更新日期：2009-09-01 00:00:00
abstract：:Fine-needle aspiration (FNA) and core biopsy of masses in the neck predominantly include samples from thyroid nodules, parathyroids and lymph nodes. The diagnostic rate of a thyroid nodule FNA improves up to 6 passes and then does not significantly change. Thyroid FNA can be performed on patients who are anticoagulate...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2020.07.005
更新日期：2020-11-01 00:00:00
abstract：:Neurogenic tumors of the neck occur in children and adults. Important parameters to aid in the differential diagnosis are age at presentation, location, and a history of NF or multiple endocrine neoplasia. Schwannoma is the most common solitary neurogenic tumor in the neck and is usually seen in patients between 20 an...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s0033-8389(05)70222-0
更新日期：2000-09-01 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：:Solitary bone lesions are common diagnostic dilemmas. Conventional radiography is frequently the initial imaging study for evaluation. This article provides an organized approach to analyzing and categorizing these lesions based on radiographs, emphasizes the development of a reasonable and accurate differential diagn...
journal_title：Radiologic clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.rcl.2011.07.012
更新日期：2011-11-01 00:00:00
