Neuroimaging in Ophthalmology

Hardcover | January 12, 2011

byMichael C. Johnson, Bruno Policeni, Andrew G. Lee

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Ophthalmologists are often the first clinicians to evaluate a patient harboring an underlying intraorbital or intracranial structural lesion. This unique position makes it particularly important for them to understand the basic mechanics, indications, and contraindications for the availableorbital and neuroimaging studies (e.g., CT and MR imaging), as well as any special studies that may be necessary to fully evaluate the suspected pathology. It is equally important for them to be able to communicate their imaging questions and provide relevant clinical information to the interpretingradiologist. Since the publication of the original edition of this American Academy of Ophthalmology Monograph in 1992, new techniques and special sequences have improved our ability to detect pathology in the orbit and brain that are significant for the ophthalmologist. In this second edition of Monograph 6,Johnson, Policeni, Lee, and Smoker have updated the original content and summarized the recent neuroradiologic literature on the various modalities applicable to CT and MR imaging for ophthalmology. They emphasize vascular imaging advances (e.g., MR angiography (MRA), CT angiography (CTA), MRvenography (MRV), and CT venography (CTV) and specific MR sequences (e.g., fat suppression, fluid attenuation inversion recovery (FLAIR), gradient recall echo imaging (GRE), diffusion weighted imaging (DWI), perfusion weighted imaging (PWI), and dynamic perfusion CT (PCT)). They have also includedtables that outline the indications, best imaging recommendations for specific ophthalmic entities, and examples of specific radiographic pathology that illustrate the relevant entities. The goal of this Monograph is to reinforce the critical importance of accurate, complete, and timely communication - from the prescribing ophthalmologist to the interpreting radiologist - of the clinical findings, differential diagnosis, and presumed topographical location of the suspected lesion inorder for the radiologist to perform the optimal imaging study, and ultimately, to receive the best interpretation.

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Ophthalmologists are often the first clinicians to evaluate a patient harboring an underlying intraorbital or intracranial structural lesion. This unique position makes it particularly important for them to understand the basic mechanics, indications, and contraindications for the availableorbital and neuroimaging studies (e.g., CT and...

Michael C. Johnson, M.D., F.R.C.S.C. is an Assistant Professor in the Department of Ophthalmology at the University of Alberta, Edmonton, Alberta, Canada. Bruno Policeni, MD, Clinical Assistant Professor of Diagnostic Radiology - Neuroradiology, University of Iowa. Andrew G. Lee, M.D. is chair of the Department of Ophthalmology at The...

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Format:HardcoverDimensions:128 pages, 10 × 7 × 0.98 inPublished:January 12, 2011Publisher:Oxford University PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0195381610

ISBN - 13:9780195381610

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Table of Contents

Preface1. Magnetic Resonance Imaging1-1 Physical Principles1-2 Extraction of Spatial Information1-3 T1 and T2 Defined1-4 TR and TE Defined1-5 T1 and T2 Relaxation1-6 Factors Determining the Appearance of MRI Scans1-7 T1-weighted Images1-8 T2-weighted Images1-9 CT versus MRI of Hemorrhage1-10 Diffusion Weighted Imaging1-11 Perfusion Weighted Imaging1-12 High Resolution 3D Rapid Imaging1-13 Paramagnetic Contrast Agents1-14 Surface-Coil Techniques1-15 Magnetic strength1-16 Contraindications2. Computed Tomography2-1 Physical Principles2-2 Clinical Imaging Devices2-3 Windows2-4 Axial-Plane Imaging2-5 Multiplanar Reconstruction2-6 Computer Analysis2-7 Contrast Enhancement in CT2-8 Perfusion Computed Tomography2-9 X-Ray Dosage3. Angiography and Other Specialized Imaging3-1 MR and CT angiography and venography3-2 MR spectroscopy3-3 Functional MRI4. Ordering and Interpreting Images4-1 Selection of Technique4-2 Interpreting Images4-3 Examination of ImagesSummarySuggested Readings