Skull Base, Orbits, Temporal Bone, and Cranial Nerves: Anatomy on MR Imaging

Morani, Ajaykumar C.; Ramani, Nisha S.; Wesołowski, J

doi:10.1016/j.mric.2011.05.006

Cited by 18 publications

(14 citation statements)

References 21 publications

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Section: Olfactory Nerve (Cn I)mentioning

confidence: 99%

“…The olfactory nerve carries the sense of smell from the nasal mucosa (59). The olfactory nerve refers to bundles of axons that originate from the olfactory bulb and pass through the numerous olfactory foramina in the cribriform plate of the ethmoid bone (59). Although direct visualization of the olfactory nerve is beyond the resolution of 18 F-FDG PET (25), PNS should be suspected when the cribriform plate is involved with lesions in the superior sinonasal and anterior cranial fossa region by tumors such as esthesioneuroblastoma, sinonasal squamous cell carcinoma, and melanoma (Supplemental Fig.…”

Section: Olfactory Nerve (Cn I)mentioning

confidence: 99%

See 1 more Smart Citation

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates

et al. 2018

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Learning Objectives: On successful completion of this activity, participants should be able to (1) describe the neural pathways and basic anatomy of the commonly involved cranial nerves with perineural spread of tumor; (2) recognize the imaging findings of perineural spread in head and neck cancers on functional and anatomic imaging; and (3) explain the definition, pathogenesis, and clinical significance of perineural spread. Financial Disclosure: The authors of this article have indicated no relevant relationships that could be perceived as a real or apparent conflict of interest. CME Credit: SNMMI is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to sponsor continuing education for physicians. SNMMI designates each JNM continuing education article for a maximum of 2.0 AMA PRA Category 1 Credits. Physicians should claim only credit commensurate with the extent of their participation in the activity. For CE credit, SAM, and other credit types, participants can access this activity through the SNMMI website (http://www.snmmilearningcenter.org) through March 2022. Perineural spread (PNS) refers to tumor growth along large nerves, a macroscopic analog of microscopic perineural invasion. This phenomenon most commonly occurs in the head and neck, but its incidence varies with histologic tumor subtype. PNS results from a complex molecular interplay between tumor cells, nerves, and connective stroma. PNS is clinically underdiagnosed despite its impact on patients' prognosis and management. The role of 18 F-FDG PET in assessment of PNS in head and neck cancer remains to be explored, in contrast to MRI as the established gold standard. In patients with PNS, 18 F-FDG PET shows both abnormality along the course of the involved nerve and muscular changes secondary to denervation. Assessment of PNS on 18 F-FDG PET requires knowledge of relevant neural pathways and can be improved by correlation with anatomic imaging, additional processing of images, and review of clinical context.

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Section: Olfactory Nerve (Cn I)mentioning

confidence: 99%

Section: Olfactory Nerve (Cn I)mentioning

confidence: 99%

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates

et al. 2018

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“…ral invasion along cranial nerves as well as infl ammatory processes. Fat-suppressed T1-weighted post-contrast sequences produce the best images for nerve segments in tissues with high adipose content such as the orbits (Morani et al 2011 ).…”

Section: Imagingmentioning

confidence: 99%

“…• FIESTA 3D ( F ast I maging E mploying S teady S t ate A cquisition): Permits imaging of the cisternal segments of the cranial nerves given the hypointensity of the roots surrounded by hyperintense CSF (Morani et al 2011 ) and also within other hyperintense structures such as the parotid gland (Li et al 2012 ). For optimal imaging, acquisition image thickness should be submillimeter (Alves 2010 ).…”

Section: Imagingmentioning

confidence: 99%

Cranial Nerves

Lanning

Young

Barker

et al. 2014

Target Volume Delineation for Conformal and Intensity-Modulated Radiation Therapy

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“…Gadalonium kontrast madde enjeksiyonu ile yapılan çekimlerde orbital tümörün kontrast madde tutum özellikleri de ayırıcı tanıda yardımcı olabilir. [14][15][16][17] Orbital tümörler, MR görüntüleme yöntemleri ile çevrel dokular ile karşılaştırıldığında izointens, hipointens ve hiperintens olabilir. Çeşitli orbital tümörlerin MRG özellikleri Tablo 2'de özetlenmiştir.…”

Section: Mr Görüntülemeunclassified

Orbita Tümörlerinin Tanı ve Tedavisinde Güncel Yaklaşımlar

Tunç¹

2014

tjo

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Bu derlemede orbita tümörlerinin güncel tanı metotları üzerinde durularak doğru tanısı, güncel tedavi yaklaşımları ele alnmıştır. Orbita tümörlerinin tedavisi oküler onkoloji uzmanlarının radyodiagnostik, patoloji, radyasyon onkolojisi, pediatrik onkoloji ve medikal onkoloji uzmanlarıyla işbirliği ile yürütülmelidir. Doğru tanı ve uygun tedavi yaklaşımları uygulanırsa orbital tümörler, hastanın yaşam kalitesi korunarak başarıyla tedavi edilebilir.

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Skull Base, Orbits, Temporal Bone, and Cranial Nerves: Anatomy on MR Imaging

Cited by 18 publications

References 21 publications

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates

Cranial Nerves

Orbita Tümörlerinin Tanı ve Tedavisinde Güncel Yaklaşımlar

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Skull Base, Orbits, Temporal Bone, and Cranial Nerves: Anatomy on MR Imaging

Cited by 18 publications

References 21 publications

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on 18F-FDG PET, with CT and MRI Correlates

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on 18F-FDG PET, with CT and MRI Correlates

Cranial Nerves

Orbita Tümörlerinin Tanı ve Tedavisinde Güncel Yaklaşımlar

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Product

Resources

About

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates

An Imager’s Guide to Perineural Tumor Spread in Head and Neck Cancers: Radiologic Footprints on ¹⁸F-FDG PET, with CT and MRI Correlates