Intermittent-mode CT fluoroscopy-guided biopsy of the lung or upper abdomen with breath-hold monitoring and feedback: system development and feasibility.

A bellows-based breath-hold monitoring and feedback system was developed and evaluated for use in intermittent-mode computed tomographic (CT) fluoroscopy-guided biopsy procedures in the lung or upper abdomen. The bellows system is described, and its feasibility is demonstrated in studies with a respiratory phantom and human volunteers. Results are reported for seven patients who underwent bellows-assisted biopsy. Breath-hold monitoring and feedback with the bellows system allow the patient to perform reliable breath holding at a preselected level. This optimizes intermittent-mode CT fluoroscopy-guided biopsies by allowing consistent visualization of the target lesion throughout the procedure.

[1]  Initial clinical evaluation of a respiratory gating radiotherapy system , 2000, Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Cat. No.00CH37143).

[2]  K. Klose,et al.  Real-time CT-fluoroscopy for guidance of percutaneous drainage procedures. , 1998, Journal of vascular and interventional radiology : JVIR.

[3]  S. Silverman,et al.  Patient and personnel exposure during CT fluoroscopy-guided interventional procedures. , 2000, Radiology.

[4]  H. Kubo,et al.  Respiration gated radiotherapy treatment: a technical study. , 1996, Physics in medicine and biology.

[5]  E. Paulson,et al.  CT fluoroscopy--guided interventional procedures: techniques and radiation dose to radiologists. , 2001, Radiology.

[6]  R C Grimm,et al.  Respiratory kinematics of the upper abdominal organs: A quantitative study , 1992, Magnetic resonance in medicine.

[7]  K. R. Jones.  A respiration monitor for use with CT body scanning and other imaging techniques. , 1982, The British journal of radiology.

[8]  A L Oberg,et al.  Benefits and safety of CT fluoroscopy in interventional radiologic procedures. , 2001, Radiology.

[9]  T Kozuka,et al.  CT-guided needle biopsy of small pulmonary nodules: value of respiratory gating. , 2000, Radiology.

[10]  H. Hricak,et al.  Magnetic resonance imaging with respiratory gating: techniques and advantages. , 1984, AJR. American journal of roentgenology.

[11]  C. Ramsey,et al.  Clinical efficacy of respiratory gated conformal radiation therapy. , 1999, Medical dosimetry : official journal of the American Association of Medical Dosimetrists.

[12]  W. Döhring,et al.  A simple device for breath-level monitoring during CT. , 1985, Radiology.

[13]  K Katada,et al.  Radiation dosimetry at CT fluoroscopy: physician's hand dose and development of needle holders. , 1996, Radiology.

[14]  Richard L. Ehman,et al.  A monitoring, feedback, and triggering system for reproducible breath‐hold MR imaging , 1993, Magnetic resonance in medicine.

[16]  L Kreel,et al.  Pulmonary tissue attenuation with computed tomography: comparison of inspiration and expiration scans. , 1979, Journal of computer assisted tomography.

[17]  P. J. Robinson,et al.  Improved Control of Respiration During Computed Tomography by Feedback Monitoring , 1982, Journal of computer assisted tomography.

[18]  P F Judy,et al.  CT fluoroscopy-guided abdominal interventions: techniques, results, and radiation exposure. , 1999, Radiology.