Dose performance of a 64-channel dual-source CT scanner

Cynthia H McCollough, Andrew N. Primak, Osama Saba, Herbert Bruder, Karl Stierstorfer, Rainer Raupach, Christoph Suess, Bernhard Schmidt, Bernd M. Ohnesorge, Thomas G. Flohr

Research output: Contribution to journalArticle

182 Citations (Scopus)

Abstract

Purposes: To prospectively compare the dose performance of a 64-channel multi-detector row computed tomographic (CT) scanner and a 64-channel dual-source CT scanner from the same manufacturer. Materials and Methods: To minimize dose in the cardiac (dual-source) mode, the evaluated dual-source CT system uses a cardiac beam-shaping filter, three-dimensional adaptive noise reduction, heart rate- dependent pitch, and electrocardiographically based modulation of the tube current. Weighted CT dose index per 100 mAs was measured for the head, body, and cardiac beam-shaping filters. Kerma-length product was measured in the spiral cardiac mode at four pitch values and three electrocardiographic modulation temporal windows. Noise was measured in an anthropomorphic phantom. Data were compared with data from a 64-channel multi-detector row CT scanner. Results: For the multi-detector row and dual-source CT systems, respectively, weighted CT dose index per 100 mAs was 14.2 and 12.2 mGy (head CT), 6.8 and 6.4 mGy (body CT), and 6.8 and 5.3 mGy (cardiac CT). In the spiral cardiac mode (no electrocardiographically based tube current modulation, 0.2 pitch), equivalent noise occurred at volume CT dose index values of 23.7 and 35.0 mGy (coronary artery calcium CT) and 58.9 and 61.2 mGy (coronary CT angiography) for multi-detector row CT and dual-source CT, respectively. The use of heart rate-dependent pitch values reduced volume CT dose index to 46.2 mGy (0.265 pitch), 34.0 mGy (0.36 pitch), and 26.6 mGy (0.46 pitch) compared with 61.2 mGy for 0.2 pitch. The use of electrocardiographically based tube current-modulation and temporal windows of 110, 210, and 310 msec further reduced volume CT dose index to 9.1-25.1 mGy, dependent on the heart rate. Conclusion: For electrocardiographically gated coronary CT angiography, image noise equivalent to that of multi-detector row CT can be achieved with dual-source CT at doses comparable to or up to a factor of two lower than the doses at multi-detector row CT, depending on heart rate of the patient.

Original languageEnglish (US)
Pages (from-to)775-784
Number of pages10
JournalRadiology
Volume243
Issue number3
DOIs
StatePublished - Jun 2007

Fingerprint

Heart Rate
Noise
Angiography
Head
Coronary Vessels
Calcium

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

McCollough, C. H., Primak, A. N., Saba, O., Bruder, H., Stierstorfer, K., Raupach, R., ... Flohr, T. G. (2007). Dose performance of a 64-channel dual-source CT scanner. Radiology, 243(3), 775-784. https://doi.org/10.1148/radiol.2433061165

Dose performance of a 64-channel dual-source CT scanner. / McCollough, Cynthia H; Primak, Andrew N.; Saba, Osama; Bruder, Herbert; Stierstorfer, Karl; Raupach, Rainer; Suess, Christoph; Schmidt, Bernhard; Ohnesorge, Bernd M.; Flohr, Thomas G.

In: Radiology, Vol. 243, No. 3, 06.2007, p. 775-784.

Research output: Contribution to journalArticle

McCollough, CH, Primak, AN, Saba, O, Bruder, H, Stierstorfer, K, Raupach, R, Suess, C, Schmidt, B, Ohnesorge, BM & Flohr, TG 2007, 'Dose performance of a 64-channel dual-source CT scanner', Radiology, vol. 243, no. 3, pp. 775-784. https://doi.org/10.1148/radiol.2433061165
McCollough CH, Primak AN, Saba O, Bruder H, Stierstorfer K, Raupach R et al. Dose performance of a 64-channel dual-source CT scanner. Radiology. 2007 Jun;243(3):775-784. https://doi.org/10.1148/radiol.2433061165
McCollough, Cynthia H ; Primak, Andrew N. ; Saba, Osama ; Bruder, Herbert ; Stierstorfer, Karl ; Raupach, Rainer ; Suess, Christoph ; Schmidt, Bernhard ; Ohnesorge, Bernd M. ; Flohr, Thomas G. / Dose performance of a 64-channel dual-source CT scanner. In: Radiology. 2007 ; Vol. 243, No. 3. pp. 775-784.
@article{ceea8c604c9543c6a1be08e8b81abdc9,
title = "Dose performance of a 64-channel dual-source CT scanner",
abstract = "Purposes: To prospectively compare the dose performance of a 64-channel multi-detector row computed tomographic (CT) scanner and a 64-channel dual-source CT scanner from the same manufacturer. Materials and Methods: To minimize dose in the cardiac (dual-source) mode, the evaluated dual-source CT system uses a cardiac beam-shaping filter, three-dimensional adaptive noise reduction, heart rate- dependent pitch, and electrocardiographically based modulation of the tube current. Weighted CT dose index per 100 mAs was measured for the head, body, and cardiac beam-shaping filters. Kerma-length product was measured in the spiral cardiac mode at four pitch values and three electrocardiographic modulation temporal windows. Noise was measured in an anthropomorphic phantom. Data were compared with data from a 64-channel multi-detector row CT scanner. Results: For the multi-detector row and dual-source CT systems, respectively, weighted CT dose index per 100 mAs was 14.2 and 12.2 mGy (head CT), 6.8 and 6.4 mGy (body CT), and 6.8 and 5.3 mGy (cardiac CT). In the spiral cardiac mode (no electrocardiographically based tube current modulation, 0.2 pitch), equivalent noise occurred at volume CT dose index values of 23.7 and 35.0 mGy (coronary artery calcium CT) and 58.9 and 61.2 mGy (coronary CT angiography) for multi-detector row CT and dual-source CT, respectively. The use of heart rate-dependent pitch values reduced volume CT dose index to 46.2 mGy (0.265 pitch), 34.0 mGy (0.36 pitch), and 26.6 mGy (0.46 pitch) compared with 61.2 mGy for 0.2 pitch. The use of electrocardiographically based tube current-modulation and temporal windows of 110, 210, and 310 msec further reduced volume CT dose index to 9.1-25.1 mGy, dependent on the heart rate. Conclusion: For electrocardiographically gated coronary CT angiography, image noise equivalent to that of multi-detector row CT can be achieved with dual-source CT at doses comparable to or up to a factor of two lower than the doses at multi-detector row CT, depending on heart rate of the patient.",
author = "McCollough, {Cynthia H} and Primak, {Andrew N.} and Osama Saba and Herbert Bruder and Karl Stierstorfer and Rainer Raupach and Christoph Suess and Bernhard Schmidt and Ohnesorge, {Bernd M.} and Flohr, {Thomas G.}",
year = "2007",
month = "6",
doi = "10.1148/radiol.2433061165",
language = "English (US)",
volume = "243",
pages = "775--784",
journal = "Radiology",
issn = "0033-8419",
publisher = "Radiological Society of North America Inc.",
number = "3",

}

TY - JOUR

T1 - Dose performance of a 64-channel dual-source CT scanner

AU - McCollough, Cynthia H

AU - Primak, Andrew N.

AU - Saba, Osama

AU - Bruder, Herbert

AU - Stierstorfer, Karl

AU - Raupach, Rainer

AU - Suess, Christoph

AU - Schmidt, Bernhard

AU - Ohnesorge, Bernd M.

AU - Flohr, Thomas G.

PY - 2007/6

Y1 - 2007/6

N2 - Purposes: To prospectively compare the dose performance of a 64-channel multi-detector row computed tomographic (CT) scanner and a 64-channel dual-source CT scanner from the same manufacturer. Materials and Methods: To minimize dose in the cardiac (dual-source) mode, the evaluated dual-source CT system uses a cardiac beam-shaping filter, three-dimensional adaptive noise reduction, heart rate- dependent pitch, and electrocardiographically based modulation of the tube current. Weighted CT dose index per 100 mAs was measured for the head, body, and cardiac beam-shaping filters. Kerma-length product was measured in the spiral cardiac mode at four pitch values and three electrocardiographic modulation temporal windows. Noise was measured in an anthropomorphic phantom. Data were compared with data from a 64-channel multi-detector row CT scanner. Results: For the multi-detector row and dual-source CT systems, respectively, weighted CT dose index per 100 mAs was 14.2 and 12.2 mGy (head CT), 6.8 and 6.4 mGy (body CT), and 6.8 and 5.3 mGy (cardiac CT). In the spiral cardiac mode (no electrocardiographically based tube current modulation, 0.2 pitch), equivalent noise occurred at volume CT dose index values of 23.7 and 35.0 mGy (coronary artery calcium CT) and 58.9 and 61.2 mGy (coronary CT angiography) for multi-detector row CT and dual-source CT, respectively. The use of heart rate-dependent pitch values reduced volume CT dose index to 46.2 mGy (0.265 pitch), 34.0 mGy (0.36 pitch), and 26.6 mGy (0.46 pitch) compared with 61.2 mGy for 0.2 pitch. The use of electrocardiographically based tube current-modulation and temporal windows of 110, 210, and 310 msec further reduced volume CT dose index to 9.1-25.1 mGy, dependent on the heart rate. Conclusion: For electrocardiographically gated coronary CT angiography, image noise equivalent to that of multi-detector row CT can be achieved with dual-source CT at doses comparable to or up to a factor of two lower than the doses at multi-detector row CT, depending on heart rate of the patient.

AB - Purposes: To prospectively compare the dose performance of a 64-channel multi-detector row computed tomographic (CT) scanner and a 64-channel dual-source CT scanner from the same manufacturer. Materials and Methods: To minimize dose in the cardiac (dual-source) mode, the evaluated dual-source CT system uses a cardiac beam-shaping filter, three-dimensional adaptive noise reduction, heart rate- dependent pitch, and electrocardiographically based modulation of the tube current. Weighted CT dose index per 100 mAs was measured for the head, body, and cardiac beam-shaping filters. Kerma-length product was measured in the spiral cardiac mode at four pitch values and three electrocardiographic modulation temporal windows. Noise was measured in an anthropomorphic phantom. Data were compared with data from a 64-channel multi-detector row CT scanner. Results: For the multi-detector row and dual-source CT systems, respectively, weighted CT dose index per 100 mAs was 14.2 and 12.2 mGy (head CT), 6.8 and 6.4 mGy (body CT), and 6.8 and 5.3 mGy (cardiac CT). In the spiral cardiac mode (no electrocardiographically based tube current modulation, 0.2 pitch), equivalent noise occurred at volume CT dose index values of 23.7 and 35.0 mGy (coronary artery calcium CT) and 58.9 and 61.2 mGy (coronary CT angiography) for multi-detector row CT and dual-source CT, respectively. The use of heart rate-dependent pitch values reduced volume CT dose index to 46.2 mGy (0.265 pitch), 34.0 mGy (0.36 pitch), and 26.6 mGy (0.46 pitch) compared with 61.2 mGy for 0.2 pitch. The use of electrocardiographically based tube current-modulation and temporal windows of 110, 210, and 310 msec further reduced volume CT dose index to 9.1-25.1 mGy, dependent on the heart rate. Conclusion: For electrocardiographically gated coronary CT angiography, image noise equivalent to that of multi-detector row CT can be achieved with dual-source CT at doses comparable to or up to a factor of two lower than the doses at multi-detector row CT, depending on heart rate of the patient.

UR - http://www.scopus.com/inward/record.url?scp=34249023378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249023378&partnerID=8YFLogxK

U2 - 10.1148/radiol.2433061165

DO - 10.1148/radiol.2433061165

M3 - Article

C2 - 17446525

AN - SCOPUS:34249023378

VL - 243

SP - 775

EP - 784

JO - Radiology

JF - Radiology

SN - 0033-8419

IS - 3

ER -