Comparing Effective Doses During Image-Guided Core Needle Biopsies with Computed Tomography Versus C-Arm Cone Beam CT Using Adult and Pediatric Phantoms.
OBJECTIVE
To compare the effective doses of needle biopsies based on dose measurements and simulations using adult and pediatric phantoms, between cone beam c-arm CT (CBCT) and CT.


METHODS
Effective doses were calculated and compared based on measurements and Monte Carlo simulations of CT- and CBCT-guided biopsy procedures of the lungs, liver, and kidney using pediatric and adult phantoms.


RESULTS
The effective doses for pediatric and adult phantoms, using our standard protocols for upper, middle and lower lungs, liver, and kidney biopsies, were significantly lower under CBCT guidance than CT. The average effective dose for a 5-year old for these five biopsies was 0.36 ± 0.05 mSv with the standard CBCT exposure protocols and 2.13 ± 0.26 mSv with CT. The adult average effective dose for the five biopsies was 1.63 ± 0.22 mSv with the standard CBCT protocols and 8.22 ± 1.02 mSv using CT. The CT effective dose was higher than CBCT protocols for child and adult phantoms by 803 and 590% for upper lung, 639 and 525% for mid-lung, and 461 and 251% for lower lung, respectively. Similarly, the effective dose was higher by 691 and 762% for liver and 513 and 608% for kidney biopsies.


CONCLUSIONS
Based on measurements and simulations with pediatric and adult phantoms, radiation effective doses during image-guided needle biopsies of the lung, liver, and kidney are significantly lower with CBCT than with CT.
Radiation Protection Domain, Soreq NRC, Yavne, 81800, Israel.
A
A
Ben-Shlomo
Section of Pediatric Cardiology, Schneider Children's Medical Center, Petach Tikva, Israel.
D
D
Cohen
Section of Pediatric Cardiology, Schneider Children's Medical Center, Petach Tikva, Israel.
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E
Bruckheimer
Department of Diagnostic Radiology, Rabin Medical Center, Petach Tikva, Israel.
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Bachar
Department of Diagnostic Radiology, Rabin Medical Center, Petach Tikva, Israel.
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R
Konstantinovsky
Section of Pediatric Cardiology, Schneider Children's Medical Center, Petach Tikva, Israel.
E
E
Birk
Department of Diagnostic Radiology, Rabin Medical Center, Petach Tikva, Israel. elia@clalit.org.il.|Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. elia@clalit.org.il.
E
E
Atar
D000328:Adult; D062005:Biopsy, Large-Core Needle / Q000295:instrumentation* / Q000379:methods; D002675:Child, Preschool; D054893:Cone-Beam Computed Tomography; D006801:Humans; D061705:Image-Guided Biopsy / Q000295:instrumentation*; D007668:Kidney / Q000473:pathology; D008099:Liver / Q000473:pathology; D008168:Lung / Q000473:pathology; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D014057:Tomography, X-Ray Computed
Adult; CT; Cone beam CT; Dosimetry; Effective dose; Image-guided needle biopsy; Pediatric; Radiation; X-ray