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Percutaneous CT-guided lung biopsy: sequential versus spiral scanning. A randomized prospective study.
B Ghaye1, R F Dondelinger, W Dewe
1Department of Medical Imaging, University Hospital Sart Tilman, B-4000 Liège, Belgium.
European Radiology
|August 25, 1999
Summary
Spiral CT scanning for percutaneous lung biopsy did not reduce procedure time or complications compared to sequential scanning. Pathological results were similar, but spiral CT involved higher radiation doses.
Area of Science:
- Radiology
- Medical Imaging
- Interventional Procedures
Background:
- Percutaneous lung biopsy is a common procedure for diagnosing thoracic lesions.
- Optimizing scanning techniques is crucial for improving efficiency and patient safety.
Purpose of the Study:
- To prospectively compare spiral CT versus sequential scanning for guiding percutaneous lung biopsies.
- To evaluate the impact of scanning mode on procedure time, pathological results, irradiation dose, and complications.
Main Methods:
- A prospective, randomized study involving 48 patients with 50 thoracic lesions.
- Biopsies were performed by senior and junior operators, measuring six procedural time segments.
- Evaluated parameters included procedure length, diagnostic yield, radiation exposure, and complication rates.
Main Results:
- Spiral CT significantly increased procedure and initial sampling time for senior operators, but not for junior operators.
- No significant differences in sensitivity, specificity, or positive predictive value between scanning modes.
- Spiral CT showed a higher mean irradiation dose (4027 mAs vs. 2358 mAs) and a similar rate of complications (pneumothorax, hemorrhage) compared to sequential CT.
Conclusions:
- Spiral CT scanning does not offer advantages in reducing procedure time or complication rates for percutaneous lung biopsy.
- Pathological diagnostic accuracy is comparable between spiral and sequential CT.
- Sequential scanning is preferable due to lower radiation exposure and comparable efficacy.