Sinonasal Tumors
This article describes the computed tomography and MR imaging features of the neoplasms of the sinonasal space. Although a pathologic diagnosis may not always be possible, knowledge of the features…
Post-treatment Evaluation of Paranasal Sinuses After Treatment of Sinonasal Neoplasms
The aim of imaging in the follow-up of asymptomatic patients treated for sinonasal neoplasms is to detect submucosal relapsing lesions. The challenge is to discriminate recurrent tissue within the changes…
Imaging in Sinonasal Inflammatory Disease
While most patients with inflammatory rhinosinusitis are successfully diagnosed clinically, imaging is indicated in patients with recurrent or chronic sinusitis, atypical symptoms and complicated acute sinusitis. Non-enhanced high resolution, thin…
Imaging in Sinonasal Inflammatory Disease
While most patients with inflammatory rhinosinusitis are successfully diagnosed clinically, imaging is indicated in patients with recurrent or chronic sinusitis, atypical symptoms and complicated acute sinusitis. Non-enhanced high resolution, thin…
Fungal Sinusitis
Fungal sinusitis is characterized into invasive and noninvasive forms. The invasive variety is further classified into acute, chronic and granulomatous forms; and the noninvasive variety into fungus ball and allergic…
Normal Anatomy and Anatomic Variants of the Paranasal Sinuses on Computed Tomography
It is imperative for all imaging specialists to be familiar with detailed multiplanar CT anatomy of the paranasal sinuses and adjacent structures. This article reviews the radiologically relevant embryology of…
Current Trends in Sinonasal Imaging
As endoscopic sinus surgery (ESS) has evolved since its introduction to the United States, so has technology for imaging the sinonasal cavities. Although imaging is most frequently performed for evaluating…
Ultrasound
Ultrasound In ultrasound imaging, a short burst of mechanical energy created by a transducer is introduced into the body through contact with the skin. The resulting ultrasound pulse travels at…
Computed Tomography
Computed Tomography Computed tomography (CT) has experienced enormous growth in clinical use over the past three decades (Fig. 10-1) primarily due to significant advances in image quality and a dramatic…
Magnetic Resonance Basics: Magnetic Fields, Nuclear Magnetic Characteristics, Tissue Contrast, Image Acquisition
Magnetic Resonance Basics: Magnetic Fields, Nuclear Magnetic Characteristics, Tissue Contrast, Image Acquisition Nuclear magnetic resonance (NMR) is the spectroscopic study of the magnetic properties of the nucleus of the atom….
