Format

Send to

Choose Destination
Jpn J Radiol. 2013 Jul;31(7):465-70. doi: 10.1007/s11604-013-0219-3. Epub 2013 Jun 7.

Dual-energy subtraction radiography improves laryngeal delineation in patients with moderate to severe cervical spondylosis.

Author information

1
Department of Radiology, Tokyo Women's Medical University Medical Center East, 2-1-10 Nishiogu, Arakawa, Tokyo, 116-8567, Japan. machira@dnh.twmu.ac.jp

Abstract

PURPOSE:

To investigate the feasibility of dual-energy subtraction (DES) in patients with moderate-severe cervical spondylosis for improving delineation of the larynx on flat panel detector (FPD) radiography.

MATERIALS AND METHODS:

For 118 patients, we graded conventional/DES anterior-posterior views for delineation of the vocal cords, subglottis, and pyriform sinus using a 5-point scale and lateral views from conventional laryngeal FPD radiography to determine cervical spondylosis severity on a scale from 0 (none) to 3 (severe). We compared the delineation of each anatomical structure in both groups of grades 0-1 and grades 2-3 of spondylosis severity between conventional and DES methods and the improved delineation rate for each anatomical structure by DES compared to the conventional method between both groups.

RESULTS:

With DES, the delineation of each anatomical structure was significantly better than with conventional radiography for both groups (P < 0.0001). The improved delineation rate of the vocal cord and subglottis using DES was significantly higher in grades 2-3 than in grades 0-1 (P < 0.05), although there was no significant difference in the delineation rate of the pyriform sinus between the groups (P = 0.847).

CONCLUSION:

DES provides better delineation of the laryngeal anatomy than conventional FPD radiography predominantly in patients with moderate-severe cervical spondylosis.

PMID:
23744489
DOI:
10.1007/s11604-013-0219-3
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Springer
Loading ...
Support Center