[Evaluation of an interactive breath-hold control system in CT-guided lung biopsy].
OBJECTIVE
In this study we assessed the effect of an interactive breath-hold control system on procedure time and technical success in transthoracic CT-guided lung biopsies.


METHODS
In 36 patients (4 female, 32 male, mean age 65 years; range 33 - 88) with a pulmonary nodule, we performed CT-guided biopsy using a 18G Tru-cut needle (Cardinal Health, Dublin, UK) in a 64 row dual-source CT scanner (Somatom Definition, Siemens, Forchheim, Germany) using intermittent imaging of the needle. In half of the patients (2 female, 16 male, mean age 67 years), an interactive breath-hold control system (IBC) (Mayo Clinic Medical Devices, USA) was applied. No additional device was used in the control group.


RESULTS
The biopsy was visually successful in all patients. The diameter of the target lesion was comparable in both groups (IBC: 30 +/- 19 mm; control: 28 +/- 15 mm). The number of imaging steps was significantly smaller (p < 0.05) and the intervention time was significantly shorter (p < 0.05) in the IBC group (IBC: 9 +/- 5 steps 17 +/- 10 min; control: 13 +/- 5 steps 26 +/- 12 min).


CONCLUSIONS
Application of the IBC unit reduced the intervention time and radiation exposure in CT-guided Tru-cut biopsy of pulmonary nodules.
Department of Diagnostic Radiology, RWTH Aachen University Hospital, Germany. schoth@gmx.de
F
F
Schoth
C
C
Plumhans
N
N
Kraemer
A
A
Mahnken
M
M
Friebe
R W
RW
Günther
G
G
Krombach
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001676:Biofeedback, Psychology / Q000295:instrumentation*; D001707:Biopsy, Needle / Q000295:instrumentation*; D004867:Equipment Design; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology*; D008175:Lung Neoplasms / Q000473:pathology* / Q000556:secondary*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012119:Respiration; D012680:Sensitivity and Specificity; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging / Q000473:pathology*; D025321:Surgery, Computer-Assisted / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation* / Q000379:methods*