Journal article
Dynamic electronic collimation method for 3-D catheter tracking on a scanning-beam digital x-ray system
Journal of medical imaging (Bellingham, Wash.), Vol.4(2), pp.023501-023501
04/01/2017
DOI: 10.1117/1.JMI.4.2.023501
PMCID: PMC5394503
PMID: 28439521
Abstract
Scanning-beam digital x-ray (SBDX) is an inverse geometry x-ray fluoroscopy system capable of tomosynthesis-based 3-D catheter tracking. This work proposes a method of dose-reduced 3-D catheter tracking using dynamic electronic collimation (DEC) of the SBDX scanning x-ray tube. This is achieved through the selective deactivation of focal spot positions not needed for the catheter tracking task. The technique was retrospectively evaluated with SBDX detector data recorded during a phantom study. DEC imaging of a catheter tip at isocenter required 340 active focal spots per frame versus 4473 spots in full field-of-view (FOV) mode. The dose-area product (DAP) and peak skin dose (PSD) for DEC versus full FOV scanning were calculated using an SBDX Monte Carlo simulation code. The average DAP was reduced to 7.8% of the full FOV value, consistent with the relative number of active focal spots (7.6%). For image sequences with a moving catheter, PSD was 33.6% to 34.8% of the full FOV value. The root-mean-squared-deviation between DEC-based 3-D tracking coordinates and full FOV 3-D tracking coordinates was less than 0.1 mm. The 3-D distance between the tracked tip and the sheath centerline averaged 0.75 mm. DEC is a feasible method for dose reduction during SBDX 3-D catheter tracking. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Details
- Title: Subtitle
- Dynamic electronic collimation method for 3-D catheter tracking on a scanning-beam digital x-ray system
- Creators
- David A. P. Dunkerley - Univ Wisconsin, Dept Med Phys, 1530 Med Sci Ctr, Madison, WI 53706 USAJordan M. Slagowski - University of Wisconsin–MadisonTobias Funk - Triple Ring TechnologiesMichael A. Speidel - University of Wisconsin–Madison
- Resource Type
- Journal article
- Publication Details
- Journal of medical imaging (Bellingham, Wash.), Vol.4(2), pp.023501-023501
- Publisher
- Spie-Soc Photo-Optical Instrumentation Engineers
- DOI
- 10.1117/1.JMI.4.2.023501
- PMID
- 28439521
- PMCID
- PMC5394503
- ISSN
- 2329-4302
- eISSN
- 2329-4310
- Number of pages
- 10
- Grant note
- R01 HL084022 / National Heart, Lung, and Blood Institute of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Heart Lung & Blood Institute (NHLBI) R01HL084022 / NATIONAL HEART, LUNG, AND BLOOD INSTITUTE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Heart Lung & Blood Institute (NHLBI)
- Language
- English
- Date published
- 04/01/2017
- Academic Unit
- Radiation Oncology
- Record Identifier
- 9984313079302771
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