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Conventional catheter-based angiography, magnetic resonance imaging/angiography, and computed tomographic angiography are all techniques routinely practiced for the diagnosis of aneurysms. With regard to the evaluation of treated aneurysms, each of these imaging modalities has inherent advantages and disadvantages. This review was aimed to provide a better(More)
BACKGROUND AND PURPOSE If magnetic resonance imaging (MRI) is to compete with computed tomography for evaluation of patients with acute ischemic stroke, there is a need for further improvements in acquisition speed. METHODS Inclusion criteria for this prospective, single institutional study were symptoms of acute ischemic stroke within 24 hours onset,(More)
BACKGROUND The standard of care for locally advanced anal cancer has been concurrent chemoradiation. However, conventional treatment with 3-dimensional radiotherapy is associated with significant toxicity. The feasibility of new radiotherapy techniques such as image-guided radiotherapy (IGRT) in combination with chemotherapy for the treatment of this(More)
Multidetector CT has become widely available and with it the ability to rapidly create detailed reformatted images. Multiplanar images can be created depicting the anatomy in planes other than the traditional axial plane, using isotropic to near-isotropic data. It is important for both clinicians and radiologists to be aware of this capability in order to(More)
Advances in technology and software applications have contributed to new imaging modalities and strategies in the evaluation of patients with suspected acute cerebral infarction. Routine computed tomography (CT) and magnetic resonance imaging (MRI) have been the standard studies in stroke imaging, which have been complemented by CT and MR angiography,(More)
PURPOSE The study aims to assess the tolerance of elderly patients (70 years or older) with locally advanced rectal cancers to image-guided radiotherapy (IGRT). A retrospective review of 13 elderly patients with locally advanced rectal cancer who underwent preoperative chemoradiation using IGRT was performed. Grade 3-4 acute toxicities, survival, and(More)
RATIONALE AND OBJECTIVES Whether first-year radiology residents are ready to start call after 6 or 12 months has been a subject of much debate. The purpose of this study was to establish an assessment that would evaluate the call readiness of first-year radiology residents and identify any individual areas of weakness using a comprehensive computerized(More)
A cute ischemic stroke (AIS) is a common and often devastating disorder; however, acute treatments that reduce long-term disability are available if patients present within the timewindow for treatment. Neuroimaging plays a critical role in the evaluation of these patients. Multimodal computed tomography (CT) or magnetic resonance imaging (MRI) has been(More)
AIMS AND BACKGROUND To evaluate the effectiveness of tomotherapy-based image-guided radiotherapy (IGRT) on the radiation dose to the cochlea in patients with nasopharyngeal cancer. METHODS AND STUDY DESIGN A retrospective review of five patients undergoing concurrent chemoradiation with tomotherapy for locally advanced nasopharyngeal cancer was performed.(More)
Sinonasal schwannomas with intracranial extension are exceedingly rare, with only 7 cases reported in the literature. Schwannomas can be isolated or multiple and are commonly associated with familial disorders such as neurofibromatosis 2 (NF 2) or familial schwannomatosis or in sporadic cases seen in sporadic schwannomatosis. Nearly all people with NF2(More)