Head and Neck Paragangliomas: Value of Contrast-Enhanced 3D MR Angiography

Neves, Fernanda Macedo de Oliveira; Huwart, Laurent; Jourdan, Guillaume; Reizine, D.; Herman, Philippe; Vicaut, Eric; Guichard, J.-P.

doi:10.3174/ajnr.a0948

Cited by 75 publications

(49 citation statements)

References 21 publications

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“…[1][2][3][4][5][6][7] It is also important for surgeons to know vasculature ahead of time, even without preoperative embolization to improve operative planning. On the basis of our results, 4D-CE-MRA may be equivalent to DSA at the primary diagnosis aimed at identifying the presence or absence of hypervascular tumors.…”

Section: Discussionmentioning

confidence: 99%

“…Head and neck tumors have been diagnosed by time-resolved contrast-enhanced MRA at 1.5T. [5][6][7] This technique combines the T1 shortening effect of gadolinium-based contrast agents, dynamic imaging, and digital subtraction and parallel imaging techniques and yields MRA images of high temporal resolution. [5][6][7] Although the use of 3T for assessing various lesions in the brain and head and neck regions by 4D-CE-MRA has been described, [8][9][10] to our knowledge, systematic evaluation of this method in patients with brain and head and neck tumors has not been performed.…”

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confidence: 99%

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Evaluation of Brain and Head and Neck Tumors with 4D Contrast-Enhanced MR Angiography at 3T

Nishimura

Hirai²,

Shigematsu³

et al. 2011

AJNR Am J Neuroradiol

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Evaluation of Brain and Head and Neck Tumors with 4D Contrast-Enhanced MR Angiography at 3T

Nishimura

Hirai²,

Shigematsu³

et al. 2011

AJNR Am J Neuroradiol

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“…On T2-weighted images, the salt-like appearance can be explained by the tumor matrix that appears hyperintense due to the presence of slow intratumor flow and hemorrhage and, on post-contrast T1-weighted images, by the presence of avid enhancement. The pepper-like appearance, can be explained in both on T1-and T2-weighted images by the presence of flow-voids of small vessels within these masses (13) .…”

Section: "Salt and Pepper Sign" In Paragangliomamentioning

confidence: 99%

Sinais em neurorradiologia: parte 2

et al. 2011

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The use of signs for interpretation of images in neuroradiology is extremely useful. Some signs are quite specific and, in some cases, pathognomonic. In this second part of their essay, the authors describe 15 additional neuroradiological signs. Main characteristics of imaging findings will be approached and the significance of their role in the clinical practice will be discussed. Keywords: Radiological signs; Neuroradiology; Computed tomography; Magnetic resonance imaging.O uso de sinais na interpretação de imagens na neurorradiologia é extremamente útil. Muitos sinais são bastante específicos e em alguns casos, patognomônicos. Nesta segunda parte os autores descreverão 15 sinais neurorradiológicos adicionais. Serão novamente abordadas as principais características de imagem de cada um e sua importân-cia na prática clínica. Unitermos: Sinais radiológicos; Neurorradiologia; Tomografia computadorizada; Imagem por ressonância magnética. Abstract "High heel foot print sign" in the skull baseThe high heel foot print sign (Figure 1) is useful in the understanding of the intricate anatomy of the skull base and represent two relevant foramina. The anterior aspect of the high heel footprint represents the foramen ovale (FO), and the posterior aspect (the heel itself) the foramen spinosum (FS). The mandibular nerve, one of the three branches of the trigeminal nerve, is the main FO component (1) . Also, the otic Figure 1. Axial CT image demonstrating normal appearance of the skull base. The high heel foot print sign is evidenced. The small arrow indicates the foramen spinosum, and the large arrow, the foramen ovale. Anteriorly to the high heel footprint is the Vesalius foramen (venous foramen) (arrowhead). ganglion, the accessory meningeal artery, the lesser petrosal nerve and the emissary veins are found in this foramen. The middle meningeal artery is in the FS (2) , and the absence of such artery is related to the persistent stapedial artery (3) . "Lemon sign" in spina bifidaThe lemon sign (Figure 2) is an useful sign in the detection of spina bifida and is commonly associated with hydrocephalus and Arnold-Chiari II malformation (4) . Such sign can be found in up to 98% of cases of spina bifida (5) . The lemon sign is not exclusive to spina bifida and can be observed in cases of encephalocele, thanatophoric dys-

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“…Magnetic resonance (MR) angiography also demonstrates intra-tumoral arterial vessels (Johnson 1998, Arnold et al 2003, van den Berg et al 2004, van den Berg 2005, Neves et al 2008. 3D time-of-flight (a noncontrast MR angiography), 3D gadolinium-enhanced MR angiography sequences, and, more recently, time-resolved 4D gadolinium MR angiography have been shown to be highly informative in the detection of HNPGLs (Arnold et al 2003, van den Berg et al 2004, Neves et al 2008, especially JPs. Fusion images between T1-weighted and the most informative images on 4D MR angiography are particularly useful for tumor delineation (Fig.…”

Section: Current Approaches For Localization Of Pheochromocytomas/parmentioning

confidence: 99%

15 YEARS OF PARAGANGLIOMA: Imaging and imaging-based treatment of pheochromocytoma and paraganglioma

Castinetti¹,

Kroiss²,

Kumar³

et al. 2015

Endocrine-Related Cancer

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Although anatomic imaging to assess the precise localization of pheochromocytomas/ paragangliomas (PHEOs/PGLs) is unavoidable before any surgical intervention on these tumors, functional imaging is becoming an inseparable portion of the imaging algorithm for these tumors. This review article presents applications of the most up-to-date functional imaging modalities and image-based treatment to PHEOs/PGLs patients. Functional imaging techniques provide whole-body localization (number of tumors present along with metastatic deposits) together with genetic-specific imaging approaches to PHEOs/PGLs, thus enabling highly specific and sensitive PHEO/PGL detection and delineation that now greatly impact the management of patients. Radionuclide imaging techniques also play a crucial role in the prediction of possible radioactive treatment options for PHEO/PGL. In contrast to previous imaging algorithms used for either assessement of these patients or their follow-up, endocrinologists, surgeons, oncologists, pediatricians, and other specialists require functional imaging before any therapeutic plan is outlined to the patient, and follow-up, especially in patients with metastatic disease, is based on the periodic use of functional imaging, often reducing or substituting for anatomical imaging. In similar specific indications, this will be further powered by using PET/MR in the assessment of these tumors. In the near future, it is expected that PHEO/PGL patients will benefit even more from an assessement of the functional characteristics of these tumors and new imaging-based treatment options. Finally, due to the use of new targeting moieties, gene-targeted radiotherapeutics and nanobodiesbased theranostic approaches are expected to become a reality in the near future.

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Head and Neck Paragangliomas: Value of Contrast-Enhanced 3D MR Angiography

Cited by 75 publications

References 21 publications

Evaluation of Brain and Head and Neck Tumors with 4D Contrast-Enhanced MR Angiography at 3T

Evaluation of Brain and Head and Neck Tumors with 4D Contrast-Enhanced MR Angiography at 3T

Sinais em neurorradiologia: parte 2

15 YEARS OF PARAGANGLIOMA: Imaging and imaging-based treatment of pheochromocytoma and paraganglioma

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