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Current opinion in radiology最新文献

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Imaging of metabolic diseases of the brain. 脑代谢性疾病的影像学。
Current opinion in radiology Pub Date : 1992-02-01
M K Edwards, K J Cassedy
{"title":"Imaging of metabolic diseases of the brain.","authors":"M K Edwards,&nbsp;K J Cassedy","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Increasing interest in metabolic diseases of the brain has revealed more specific patterns of disease, permitting us to make more accurate diagnoses or to suggest a more limited differential list of considerations. MR imaging is also useful in monitoring the course of the disease in processes for which treatment is available.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"38-42"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic resonance techniques and artifacts. 磁共振技术和人工制品。
Current opinion in radiology Pub Date : 1992-02-01
J T Chen, D D Stark
{"title":"Magnetic resonance techniques and artifacts.","authors":"J T Chen,&nbsp;D D Stark","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>One area in which MR imaging can use improvement is the reduction of artifacts due to various physiologic motions during imaging. These artifacts degrade images and can cause misleading interpretations. This paper reviews some of the recent technical advances directed to remove these artifacts, as well as other techniques that improve MR imaging quality in general.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"13-5"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuroradiology. 神经放射学。
Current opinion in radiology Pub Date : 1992-02-01
{"title":"Neuroradiology.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"149-66"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of normal anatomy and anomalies of the brain. 脑部正常解剖与异常的影像。
Current opinion in radiology Pub Date : 1992-02-01
M Glicklich, J S Ross
{"title":"Imaging of normal anatomy and anomalies of the brain.","authors":"M Glicklich,&nbsp;J S Ross","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Magnetic resonance imaging permits better delineation of many anatomic structures not resolved with other imaging modalities and, by permitting the behavior of these structures to be observed at different pulse sequences, allows their tissues to be characterized. The literature of the year 1990 to 1991 includes many descriptive reports of normal anatomy, some of which are accompanied by explanations for the MR signal appearance. Familiarity with normal central nervous system structures and with normal MR signal characteristics is essential to avoid mistaking them for pathologic variants.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"21-7"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic resonance imaging contrast agents. 磁共振成像造影剂。
Current opinion in radiology Pub Date : 1992-02-01
V M Runge
{"title":"Magnetic resonance imaging contrast agents.","authors":"V M Runge","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Intravenous contrast enhancement has assumed a prominent position in clinical MR imaging, particularly for studies of the head and spine. New chelates such as gadoteridol are likely to be approved in the near future; gadopentetate dimeglumine is the only agent approved for clinical use in the United States. Clinical applications have rapidly expanded for the gadolinium chelates with extracellular distribution. Within the next decade, approval is anticipated for a variety of additional agents that may help assess tissue function.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"3-12"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of tumors of the central nervous system. 中枢神经系统肿瘤的影像学。
Current opinion in radiology Pub Date : 1992-02-01
G Scotti, A Falini
{"title":"Imaging of tumors of the central nervous system.","authors":"G Scotti,&nbsp;A Falini","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Research in diagnosing and understanding brain tumors in neuroradiology is influenced by the investigative tools available to neuroradiologists. CT has represented the gold standard for the past two decades. The role of angiography has become complementary; relevant in the therapeutic phase of embolization of meningiomas or base of the skull tumors or in intra-arterial chemotherapy for gliomas. In 1991, the MR imaging revolution continues to provide new insights in the diagnosis, classification, and understanding of the biology of brain tumors. Interest has been focused mainly on information provided by MR imaging and MR spectroscopy. Spectroscopy is being used in a more systematic way and in large series with different histologic tumor types. Spectra from tumors are definitely different from those of normal brain, although no specific patterns for histologic types were found, with the possible exception of meningiomas. Comparison with positron emission tomography is considered to be useful. Analysis of rare tumors using MR imaging allows better understanding, classification, diagnosis, and surgical therapy of lesions such as central neurocytomas, hamartomatous tumors, and lymphomas. An attempt at a better classification for brain tumors was proposed and may prove to be very useful for systematization and communication.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"52-62"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12903001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interventional neuroradiology. 介入神经放射学。
Current opinion in radiology Pub Date : 1992-02-01
M Khayata, A Aymard, J P Guichard, J J Merland
{"title":"Interventional neuroradiology.","authors":"M Khayata,&nbsp;A Aymard,&nbsp;J P Guichard,&nbsp;J J Merland","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The challenge of this \"decade of the brain\" is to perfect the interventional means for detecting and treating vascular malformations. The prognosis for patients with aneurysms is improved with the introduction of the new Guglielmi detachable coils. Parent vessel occlusion is a good alternative for treating dysplastic aneurysms at the circle of Willis after functional testing. Vein of Galen malformations of the mural type are best treated using the arterial route. The venous route is useful for treating choroidal forms when treatment by the arterial approach fails. These advances have resulted in significant improvement in the outlook for children with these conditions. Arteriovenous malformation embolization with either particles or glue has about a 10% permanent complication rate and, when combined with radiosurgery or surgical resection, is successful in curing 74% of patients. Morphologic features within the arteriovenous malformation are statistically useful markers of clinical course (hemorrhage and steal). Carotid cavernous fistulas can now also be treated by microcatheter and coils through the arterial or venous routes. Angioplasty in the neck and intracranially results in improved cortical perfusion. With technologic improvements and better case selection, serious complications can be minimized.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"71-8"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12700582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of the salivary glands. 唾液腺成像。
Current opinion in radiology Pub Date : 1992-02-01
A L Weber
{"title":"Imaging of the salivary glands.","authors":"A L Weber","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Salivary gland diseases are very common disorders and require radiologic evaluation. Several radiologic methods are used for assessment of these diseases. Conventional films of the parotid and submandibular glands demonstrate opaque stones in the duct system, whereas sialography depicts nonopaque stones, provides additional information on the position of the stones, and differentiates it from other calcific densities near the duct system, as well as providing information concerning ectasia of the ducts. CT has been used for evaluating mass lesions and extraglandular inflammatory disease, including abscesses. CT also depicts stones that may not be visible on conventional films. MR imaging has become an important modality in the diagnosis and definition of benign and malignant tumors and cysts and it will probably replace CT as the primary imaging modality for the assessment of these lesions. Gadolinium may be used in the examination, especially if a malignant tumor is suspected (because of irregularity and intraglandular extension).</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"117-22"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of the larynx. 喉部成像。
Current opinion in radiology Pub Date : 1992-02-01
J D Piekarski
{"title":"Imaging of the larynx.","authors":"J D Piekarski","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the past year, most of the new developments in imaging the larynx have concerned MR imaging. Some early results with the use of gadolinium are very promising. The superiority of new imaging techniques (CT and MR imaging) for the evaluation of deep structures of the larynx is now widely accepted and there is now enough background to assess the impact of new imaging methods on treatment. Also, prognostic factors are now emerging in laryngeal cancer. CT and MR imaging appear to be of great interest for evaluating recurrent diseases. Interest in plain film studies still remains especially for emergency situations. In pediatric patients, ultrasound and ultrafast CT of the larynx have been investigated.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"123-6"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnostic procedures in nasopharyngeal illness. 鼻咽部疾病的诊断程序。
Current opinion in radiology Pub Date : 1992-02-01
T J Vogl, S H Dresel
{"title":"Diagnostic procedures in nasopharyngeal illness.","authors":"T J Vogl,&nbsp;S H Dresel","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The nasopharynx contains a wide variety of different cell types. Therefore, many kinds of lesions can occur in this area, ranging from embryologic abnormalities to benign and malignant neoplasms. The challenge to the radiologist is to describe the extent and localization of inflammation, benign, and malignant tumors. The diagnostic procedures in these cases include flexible or rigid fiberoptic clinical examinations. Pantomography and plain film studies are usually done as part of the initial examination, and CT replaces pluridirectional tomography for all questions about compact bone. Soft tissue extent of lesions is better shown on MR imaging. New scientific experiences in diagnosing lesions of the area of the nasopharynx are presented.</p>","PeriodicalId":77090,"journal":{"name":"Current opinion in radiology","volume":"4 1","pages":"127-35"},"PeriodicalIF":0.0,"publicationDate":"1992-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12902260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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