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[CT-guided lung needle biopsy using a new supporting implement]

T Morita1, N Koizumi, K Sakai

  • 1Department of Radiology, Niigata University School of Medicine.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|December 12, 1997
PubMed
Summary

A new support device was developed to improve the accuracy of CT-guided lung biopsies. The device was tested in 22 procedures for small or deep lung lesions. In 21 cases, the needle successfully reached the target, and enough tissue was collected for diagnosis. The implement made it easier to guide the needle along the correct path. This method may help doctors perform biopsies on lesions that were previously hard to reach. The study suggests the device could improve diagnostic success rates in lung biopsies.

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Area of Science:

  • Interventional radiology
  • Thoracic imaging
  • Diagnostic procedures in pulmonology

Background:

Accurate targeting remains a challenge in CT-guided lung biopsies. Prior techniques struggled with precision, particularly for small or deep lesions. It was already known that needle insertion paths are hard to control under CT guidance. No prior work had resolved how to consistently hit small pulmonary targets. This gap motivated the development of new tools to improve biopsy success. Researchers sought ways to increase the hit rate without increasing complications. Traditional methods lacked consistency in guiding the needle path. This paper introduces a novel approach to address these limitations.

Purpose Of The Study:

The aim was to develop and test a new support device for CT-guided lung biopsies. The goal was to improve the accuracy of needle placement in small or deep lesions. The researchers wanted to assess whether this new implement could enhance the hit rate. They focused on localized pulmonary lesions that are difficult to access. The motivation was to reduce the risk of missing the target during biopsies. The study aimed to evaluate the device's impact on diagnostic specimen collection. They also wanted to determine if the method could simplify needle insertion. The ultimate goal was to make CT-guided biopsies more reliable and effective.

Keywords:
CT-guided biopsypulmonary lesionneedle insertioninterventional radiology

Frequently Asked Questions

The new implement increased the hit rate to 95% in 22 procedures, allowing successful targeting of small and deep lesions.

The device provides better control of the needle's trajectory, making it easier to reach small or deep pulmonary lesions.

The implement allows for more precise needle insertion, which is challenging with traditional methods for such lesions.

Cytological and histological samples suitable for diagnosis were obtained in 21 out of 22 cases.

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Main Methods:

A custom support implement was designed to guide needle insertion during CT scans. The device was used in 22 CT-guided lung biopsies for localized lesions. Each procedure followed a standardized protocol for needle insertion. CT imaging was used to monitor the needle path in real time. The implement allowed for better control of the needle's trajectory. Lesions were selected based on their location and size for biopsy. The success of each procedure was evaluated based on lesion contact and sample quality. The study compared outcomes before and after using the new implement.

Main Results:

Out of 22 procedures, 21 (95%) successfully reached the target lesion. Diagnostic samples were obtained in 21 cases, suitable for cytology or histology. The new implement improved the precision of needle insertion paths. Smaller and deeper lesions were accessible with this method. The device simplified the process of targeting hard-to-reach areas. The success rate exceeded prior estimates for similar procedures. The implement reduced the difficulty of defining the needle's course. These results suggest the device enhances the effectiveness of CT-guided biopsies.

Conclusions:

The new implement increased the success rate of CT-guided lung biopsies. It improved the precision of needle insertion for small or deep lesions. The device allowed for better control of the needle's trajectory. The authors suggest this method is useful for challenging biopsy cases. The implement simplified the targeting process in CT-guided procedures. The study shows the device is effective in diagnostic specimen collection. The hit rate of 95% supports the device's practical value. The authors propose further evaluation of this method in broader settings.

Success was measured by whether the needle reached the lesion and if a diagnostic specimen was obtained.

The authors propose that the implement enhances CT-guided biopsy effectiveness and should be evaluated further in clinical settings.