Classical Signs in Adult Brain Imaging

This poster is published under an open license. Please read the disclaimer for further details.

Congress:

ECR 2016

Poster Number:

C-0364

Type:

Educational Exhibit

Keywords:

CNS, CT, MR, Education, Pathology

Authors:

A. Reddy¹, M. Vasanth²; ¹Bangalore/IN, ²bangalore, karnataka/IN

DOI:

10.1594/ecr2016/C-0364

DOI-Link:

https://dx.doi.org/10.1594/ecr2016/C-0364

Fig. 1: ice cream cone

Fig. 2: delta

Fig. 3: cord

Fig. 4: dural tail

Learning objectives

1) To illustrate and describe 22 classic signs useful in adult brain imaging. 2) To discuss each sign in detail with respect to causes, features and differential diagnosis.

Background

Signs help in characterization in many lesions which are pathognomic for certain diseases. Using imaging modalities like MRI and CT, various signs will be discussed under the headings of causes, salient features and differential diagnosis.

Findings and procedure details

Ice-cream cone sign Classically represents the normal appearance of the malleus and incus on HRCT axials, but it also represents a medium size acoustic schwanoma . The intracanalicular component representing "the cone" and the cerebello-pontine angle (CPA) component representing the "ice cream"[1]. [fig. 1]. Delta sign This sign represents a nonenhancing thrombus in the dural sinus surrounded by triangular enhancing dura in axial CECT [fig. 2]. The sign may not be seen in the early stage (less than 5 days) of thrombosis, as the fresh...

Conclusion

Signs are useful in expidititious characterization of specific disease patterns with ease and confidence and plays significant role in our day to day practise. A must know for all radiologists !

Personal information

References

Normal 0 false false false EN-US X-NONE X-NONE Normal 0 false false false EN-US X-NONE X-NONE Twenty classic signs in neuroradiology: A pictorial essay, Govind B Chavhan et al, ijri 2009 Vijay RK. The cord sign. Radiology. 2006;240 (1): 299-300. doi:10.1148/radiol.2401031739 - Pubmed citation. Wallace EW. The dural tail sign. Radiology. 2004;233:56–7. Lee C, Pennington MA, Kenney CM., 3rd ed MRI evaluation of developmental venous anomalies: Medullary venous anatomy of venous angiomas. AJNR Am J Neuroradiol. 1996;17:61–70. [PubMed] Tomsick T, Brott T, Barsan W, Broderick...