Background/Introduction
Rhinosinusitis is the most commonly diagnosedillnesses of the paranasal sinuses.
It is defined as an inflammation of the nasal cavity and the mucous membranes of the sinuses,
sometimes with involving the underlying bone.
On the basis of the duration of symptoms three types of sinusitis are known: acute-symptoms persist less than 4 weeks,
subacute -4 to 12 weeks and chronic /with or without nasal polyposis/- symptom duration more than 12 weeks.
There are also another three subtypes- recurrent ,
complicated /with orbital or intracranial involving/...
Description of activity and work performed
CT allows optimal differentiation of the air,
soft tissue,
bone parts of nasal cavity and pathological variants and it is able to achieve an exact evaluation of anatomic structures that are inaccessible by physical examination or endoscopy.
The best representation in coronal plane of ostiomeatal unit OMU / maxillary sinus ostia,
infundibulum,
hiatus semilunaris,
and the middle nasal turbinate/ and lateral nasal wall,
and in axial plane of the relation: ethmoidal cells:orbit and sphenoidal sinus:internal carotid artery,
are one of the biggest advantages of CT....
Conclusion and Recommendations
CT is a standard in acute rhinosinuitis when sign and symptom suggest complication and in chronic sinusitis,
especially before functional endoscopic sinus surgery /FESS/,
for postoperative assessment and in cases of recurrences.
It allows optimal differentiation of the air,
soft tissues and bone parts of the nasal cavity,
paranasal sinuses,
orbit and endocranium and it is able to present an exact visualization of a particular anatomic structures.
As CT is the best imaging modality in the evaluation of the paranasal sinuses,
the question about the...
Personal/Organisational information
Nikoleta Ivanova Traykova
University Hospital for Active Treatment "ST George" Plovdiv
Department of Radiology,Bld "Peshtersko chaussee"66,
4000 Plovdiv,
BG
Medical University Plovdiv
Anna Petrova
University Hospital for Active Treatment "ST George" Plovdiv
Department of Radiology,Bld "Peshtersko chaussee"66,
4000 Plovdiv,
BG
Katja Doikova
University Hospital "Kaspela",
4000 Plovdiv,
BG
Desislava Kostsova-Lefterova
University Hospital Aleksandrovska Sofia/BG
References
CT of the paranasal sinuses ,
LNTanenbaum,
VAIL 2003
CTimaging requirements for endoscpoic surgery.
J (1990)Radiology.163: 769-75.
Zinreich,
S.,
Kennedy,
W and Rosenbaum Panranasal sinuses,
How can radiation dose be reduced to the lens of the eye in patients undergoing CT of the PNS without compromising the image quality? U Razza,
S.Uddin.
PJR January - March 2011; 21(1): 21-30
Low-dose CT scanning of paranasal sinuses.
Traykova N.,
Lichev A.,
Djambazov K.,Tatarev G.
Rentgenologiya i Radiologiya; (2001); v.
40(2); p.
114-116
Strategies for CT Radiation Dose...
