Note The radiologist may recommend premedication with corticosteroids if contrast is required and a prior allergy is suspected. Follow the protocol recommended by your radiology department. 如果您是眼科医生,请扫描下面的二维码关注我们,我们会每天...
Multidetector computed tomography (MDCT) offers comprehensive pre-procedural imaging of the aortic root structures, including the left ventricular outflow tract, aortic annulus, aortic sinuses, sinotubular junction, ascending aorta, coronary ostia height, procedure access route, and the relevant non-...
Conjunctive use of CT, which depicts bone destruction and other reactive bony changes along with MRI, which reveals characteristic findings of soft-tissue thickening of the involved sinuses with extension of disease to the orbits, cavernous sinus, dura, hard palate, skull base, and intracranial ...
a. sphenoid sinus b. ethmoid sinus c. frontal sinus d. maxillary sinus a. 3 mm the section thickness that would demonstrate the greatest detail of the paranasal sinuses is: a. 3 mm b. 5 mm c. 7 mm d. 10 mm c. 2 which number on the figure corresponds to the zygomatic bone? a...
Redefine PET/CT imaging with the precision-driven performance of Biograph Vision™1. With industry-leading technical specifications, Biograph Vision delivers next-level image quality that transforms accurate decision-making.2,3 Biograph Vision.X debuts Featured at Society of Nuclear Medicine and ...
there are some troubles with CTA. One is an added radiation dose of approximately 2.5 mSV after the NCCT which is also 2.5 mSV (total of 5 mSV). Another is that intravenous contrast agents may probably cause contrast nephropathy, especially in patients with a history of nephropathy11....
Mulkens TH, Broers C, Fieuws S, et al. Comparison of effective doses for low-dose MDCT and radiographic examination of sinuses in children.AJR Am J Roentgenol.2005;184:1611-1618. Pacharn P, Poe SA, Donnelly LF. Low-tube-current multidetector CT for children with suspected extrinsic airway...
Patients Age (years) Median Range Gender Male Female Tumor subsite Oral Cavity Oropharynx Hypopharynx Larynx Nasopharynx Paranasal sinuses Histology Squamous cell Undifferentiated Adenocarcinoma Pathologic AJCC stage I II IIB III IVA IVB Pathologic TNM categories T1, T2, T2b, T3, T4a N0 M0 T2, T4a ...
Radiation Dose to the Eyes and Parotids During CT of the Sinuses Presented at the Annual Meeting of the American Academy of Otolaryngology—Head and Neck Surgery, New York, NY, September 19-22, 2004. Author links open overlay panelMarc K. Bassim MD a, Charles S. Ebert MD, MPH a, ...
On imaging, the distance from the outer edge of the sinus to the opposite aortic wall should not normally exceed 4.5 cm. The aortic sinuses should be evaluated on a double oblique reformatted image at a dedicated 3D workstation, to ensure that the valve ring is completely in the image plan...