A new technique for the diagnosis of acute appendicitis: abdominal CT with compression to the right lower quadrant.
Eur Radiol
; 27(8): 3317-3325, 2017 Aug.
Article
en En
| MEDLINE
| ID: mdl-28116514
ABSTRACT
OBJECTIVE:
To determine the diagnostic accuracy of abdominal CT with compression to the right lower quadrant (RLQ) in adults with acute appendicitis.METHODS:
168 patients (age range, 18-78 years) were included who underwent contrast-enhanced CT for suspected appendicitis performed either using compression to the RLQ (n = 71) or a standard protocol (n = 97). Outer diameter of the appendix, appendiceal wall thickening, luminal content and associated findings were evaluated in each patient. Kruskal-Wallis, Fisher's and Pearson's chi-squared tests were used for statistical analysis.RESULTS:
There was no significant difference in the mean outer diameter (MOD) between compression CT scans (10.6 ± 1.9 mm) and standard protocol (11.2 ± 2.3 mm) in patients with acute appendicitis (P = 1). MOD was significantly lower in the compression group (5.2 ± 0.8 mm) compared to the standard protocol (6.5 ± 1.1 mm) (P < 0.01) in patients without appendicitis. A cut-off value of 6.75 mm for the outer diameter of the appendix was found to be 100% sensitive in the diagnosis of acute appendicitis for both groups. The specificity was higher for compression CT technique (67.7 vs. 94.9%).CONCLUSION:
Normal appendix diameter was significantly smaller in the compression-CT group compared to standard-CT group, increasing diagnostic accuracy of abdominal compression CT. KEY POINTS ⢠Normal appendix diameter is significantly smaller in compression CT. ⢠Compression could force contrast material to flow through the appendiceal lumen. ⢠Compression CT may be a CT counterpart of graded compression US.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Apendicitis
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Tomografía Computarizada por Rayos X
Tipo de estudio:
Clinical_trials
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Diagnostic_studies
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Guideline
Límite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Eur Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Turquía