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Title of Journal: Eur Radiol

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Abbravation: European Radiology

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Springer Berlin Heidelberg

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DOI

10.1007/bf02374178

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ISSN

1432-1084

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Radiation exposure of multirow detector spiral co

Authors: Jan W Kuiper Jacob Geleijns Niels A A Matheijssen Wouter Teeuwisse Peter M T Pattynama
Publish Date: 2002/11/13
Volume: 13, Issue: 7, Pages: 1496-1500
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Abstract

The purpose of this study was to determine and compare the effective dose of multidetector computed tomographic angiography MDCT and digital subtraction angiography DSA studies for diagnosing a pulmonary embolus PE Radiation exposure was measured as computed tomography dose index MDCT or as dosearea product DSA and was subsequently expressed in the quantity effective dose Effective doses were obtained in 27 patients who underwent MDCT and in 12 patients who underwent DSA for suspected PE The MDCT angiography was performed on a Siemens Volume Zoom CT scanner and DSA on a Philips Integris V3000 system according to standardized protocols Average effective dose for MDCT angiography of the pulmonary arteries 27 patients was 42 mSv range 22–60 mSv Pulmonary DSA gained an average effective dose 12 patients of 71 mSv range 33–173 mSv Our results show that the effective doses in MDCT angiography studies for PE are moderate and even slightly lower in comparison with pulmonary DSA in a comparable patient group Variations in patient dose are smaller for MDCT probably because this procedure can be more strictly protocolized Patient dose should not be restrictive in the discussion of CTA replacing DSA for diagnosing PE

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