title: Intermittent-mode CT fluoroscopy-guided biopsy of the lung or upper abdomen with breath-hold monitoring and feedback: system development and feasibility.
abstract: 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.
authors.affiliation: Department of Radiology, Section of Safety, and Division of Biostatistics, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA. scarlson@mayo.edu
authors.forename: Stephanie K
authors.initials: SK
authors.lastname: Carlson
authors.forename: Joel P
authors.initials: JP
authors.lastname: Felmlee
authors.forename: Claire E
authors.initials: CE
authors.lastname: Bender
authors.forename: Richard L
authors.initials: RL
authors.lastname: Ehman
authors.forename: Kelly L
authors.initials: KL
authors.lastname: Classic
authors.forename: Houchun H
authors.initials: HH
authors.lastname: Hu
authors.forename: Tanya L
authors.initials: TL
authors.lastname: Hoskin
mesh_terms: D000005:Abdomen / Q000033:anatomy & histology*; D000328:Adult; D001706:Biopsy / Q000379:methods*; D005240:Feasibility Studies; D005246:Feedback; D005260:Female; D005471:Fluoroscopy; D006801:Humans; D008168:Lung / Q000166:cytology*; D008297:Male; D008875:Middle Aged; D010817:Physician-Patient Relations; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed