ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

To perform magnetic resonance imaging of the female pelvis, one must be familiar with the imaging appearance of normal structures as well as the disease entities that may be cncountered. However, it is also important to be familiar with and understand the basic physical principles of the available imaging techniques to be able to optimize image quality and the detection of abnormalities. This discussion is intended to describe the available imaging techniques used in evaluation of the female pelvis. Following a discussion of conventional spin echo (CSE) techniques, the fast spin echo (FSE) technique will be described in detail. This will include how the FSE sequence generates images, the choice of imaging parameters, and the unique contrast characteristics and artifacts associated with the FSE technique. Pelvic multicoils will also be described in detail, including the choice of imaging parameters when using these coils and the unique artifacts that can be encountered. Chemical-selective imaging and motion artifact reduction techniques will additionally be described. At the end of the discussion, suggested imaging parameters are given for CSE and FSE sequences and for body coil and multicoil imaging.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Magnetic resonance imaging(MR1) has been proven to aid in the early detection and diagnosis of parenchymal infections of the brain. Pyogenic brain abscess. h e m s encephalitis. Listeria rhombencephalitis, and Rasmussen's syndrome are examined in this article. Imaging characteristics, epidemiology. clinical presentations. therapies. and pathologic findings are discussed.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Intracranial fungal infections have increased in incidence in the past decade caused in part by the acquired immunodeficiency syndrome (AIDS) epidemic. The biology, epidemiology, and appearance on computed tomography (CT) and magnetic resonance imaging (MRI) of the more common fungal infections of the central nervous system (CNS) will be reviewed. The radiographic appearance alone is often not specific, but the combination of the correct clinical setting along with the CT or MRI may help the radiologist suggest the correct diagnosis.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

This article discusses the magnetic resonance imaging f MRJ) findings oftwo ofthc most common granulomatousdisordersaffecting the brain-sarcoidosis and tuberculosis. Many of the imaging features are similar for both disorders; and although the diagnosis may be suggested based on radiographic findings, it is ultimately a clinical one.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

We review the etiologic agents. epidcmiology, pathogcnesis, pathology, clinical manifestations. and imaging features ofscvcral unusual intracranial infections that have not been discussed elsewhere in this issue. The central nervous system (CNS) infections discussed are Creutzfcldt-Jakob disease (CrJaD). neurosyphilis. primary amebic meningoencephalitis (PAM), granulomatous amebic encephalitis (GAE), ccrebral amebiasis. and cerebral hydatid disease.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Neurocysticercosis (NCC) is involvement of the central nervous system (CNS) by the porcine tapeworm. common in developing countries with poor sanitation. The disease has been noted increasingly in nonendemic areas because of travel and immigration from atlected regions. The magnetic resonance (MR) appearance can be characteristic. with single or multiple cysts and varying degrees of wall enhancement and surrounding edema, depending on the stage of the life cycle of the larva and its associated cyst.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The manifestations of infectious disease of the spine are numerous. Viruses commonly afect the spinal cord and meninges, while tuberculosis and various bacterial and fungal organisms may involve the vertebrae, intervertebral disks. epidural and paraspinal regions. the leptomeninges. and, rarely, the cord itself. Magnetic resonance imaging, with its multiplanar capability and superb contmt resolution. is definitely the modality of choice in evaluating the patient with suspected infection of the spinal column or spinal cord and its coverings. The addition of postcontrast images is often helpful in the differential diagnosis.

ISSN:0899-3459    

出版商:OVID    

年代:1994

数据来源: OVID