Classification and morphology of jugular bulb and its clinical significance
10.3760/cma.j.issn.1671-8925.2008.05.014
- VernacularTitle:颈静脉球的分型及其临床意义
- Author:
Guang-Yong TIAN
1
;
Da-Chuan XU
;
De-Liang HUANG
;
Lu-Jun HAN
;
Zhi-Qiang PENG
;
Ze-Yu LI
;
Xiao-Tian SHI
Author Information
1. 南方医科大学
- Keywords:
Jugular bulb;
Spiral CT image;
Imaging diagnosis;
Anatomy
- From:
Chinese Journal of Neuromedicine
2008;7(5):483-486,494
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the anatomic and imaging morphology ofjugnlar bulb and its relationship with the surrounding structures, and to investigate the classification ofjugnlar bulb and its clinical significance. Methods We dissected 30 human temporal bones and studied multi-slice spiral CT imaging data of temporal bone of 120 cases and blood vessel cast mould specimen of the jugular bulb of 6 cases, to observe the morphology of jugnlar bulb and its spatial relationship with the surrounding structures. We made an imagined sagittal plane on the medial well of the tympanic cavity, with a horizontal tangent line of the proximal wall of the tympanic cavity and a vertical tangent line of the posterior wall of the tympanic cavity as coordinate axes (X axis and Y axis), respectively, so the 4 quadrants ( Ⅰ , Ⅱ, Ⅳ, Ⅳ) were formed. The jugular bulb was classified intro 4 types according to the quadrant where its top was projected and subtyped according to its position on the inner or outer side of the plane. The operation via mastoid approach was simulated on specimen to observe the effect of jugnlar bulb on the operation route. Results Some jugular bulbs were flat type and others were prominent types. The classification in the group of CT image: type Ⅰ , 11 case (9%);type Ⅱ, 63 cases (53%);type Ⅲ, 25 cases (21%);type Ⅳ, 21cases (17%). The classification in the group of specimen: type Ⅰ, 1 case (3%);type Ⅱ, 11 cases (37%);type Ⅲ, 8 cases (27%);type Ⅳ, 10 cases (33%). Each type of the jugular bulb had different effects on the operative approach. Conclusions The classification method with the 4 quadrants is a simple and three-dimensional way to describe the position of the jugular bulb for imaging diagnosis or operative scheme design.
