نتایج جستجو برای: weighted coronal
تعداد نتایج: 113709 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE Rathke's cleft cysts often may be difficult to differentiate from other intrasellar or suprasellar masses on radiologic studies. The purpose of this study was to describe the significance of intracystic nodules, a diagnostic characteristic found in Rathke's cleft cysts, on MR images. METHODS A retrospective review of MR studies was conducted for 13 patients who, after p...
noninvasive tool that can aid in the evaluation of the entire spectrum of internal derangements of the knee. Although the cost varies considerably across the country, the average cost of knee MRI is on the order of several hundred to more than a thousand dollars. The noninvasiveness of MRI combined with its relatively low cost have led to its acceptance by the orthopaedic community, and MRI of ...
The effect of a background signal on the signal-to-noise ratio is discussed, with particular application to ground-based observations of emission lines in the solar corona with the proposed Advanced Technology Solar Telescope. The concepts of effective coronal aperture and effective coronal integration time are introduced. Specific expressions are developed for the 1σ measurement errors for cor...
BACKGROUND AND PURPOSE Various MR techniques have been used to assess CSF flow and to image the subarachnoid spaces and ventricles. Anecdotal reports describe the use of intrathecal and intraventricular gadolinium-based contrast agents in humans and animals. We sought to determine the clinical usefulness of gadolinium-enhanced MR ventriculography for assessing CSF flow in patients with various ...
treated for carcinoma of the anal canal with a combination of chemotherapy, radiotherapy and surgery. Three years later he presented with a 5-month history of severe left hip pain and a 2-month history of severe right hip pain. He required the assistance of a cane for walking. Clinical concerns included fracture and metastatic disease. A plain film of the pelvis showed diffuse osteopenia. A tec...
this case report represents the outcome of endodontic treatment in an infected mandibular molar with periradicular periodontitis and inherent poor prognosis of root canal treatment due to severe root curvature. the tooth was successfully treated by leaving the mesial root non-obturated, the canal orifices were coronally sealed with calcium enriched mixture cement and a definitive coronal amalga...
BACKGROUND Postoperative coronal imbalance is a significant problem after selective thoracic fusion for primary thoracic and compensatory lumbar curves in adolescent idiopathic scoliosis (AIS). However, longitudinal studies on postoperative behavior of coronal balance are lacking. This multicenter retrospective study was conducted to analyze factors related to onset and remodeling of postoperat...
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