nach oben

Erschienen in:

01.02.2011 | Gastrointestinal

Does the amount of tagged stool and fluid significantly affect the radiation exposure in low-dose CT colonography performed with an automatic exposure control?

verfasst von: Hyun Kyong Lim, Kyoung Ho Lee, So Yeon Kim, Kil Joong Kim, Bohyoung Kim, Hyunna Lee, Seong Ho Park, Jeffrey H. Yanof, Seung-sik Hwang, Young Hoon Kim

Erschienen in: European Radiology | Ausgabe 2/2011

Einloggen, um Zugang zu erhalten

Abstract

Objective

To determine whether the amount of tagged stool and fluid significantly affects the radiation exposure in low-dose screening CT colonography performed with an automatic tube-current modulation technique.

Methods

The study included 311 patients. The tagging agent was barium (n = 271) or iodine (n = 40). Correlation was measured between mean volume CT dose index (CTDI _vol) and the estimated x-ray attenuation of the tagged stool and fluid (ATT). Multiple linear regression analyses were performed to determine the effect of ATT on CTDI _vol and the effect of ATT on image noise while adjusting for other variables including abdominal circumference.

Results

CTDI_vol varied from 0.88 to 2.54 mGy. There was no significant correlation between CTDI_vol and ATT (p = 0.61). ATT did not significantly affect CTDI_vol (p = 0.93), while abdominal circumference was the only factor significantly affecting CTDI_vol (p < 0.001). Image noise ranged from 59.5 to 64.1 HU. The p value for the regression model explaining the noise was 0.38.

Conclusion

The amount of stool and fluid tagging does not significantly affect radiation exposure.

Nur mit Berechtigung zugänglich

Johnson CD, Chen MH, Toledano AY, Heiken JP, Dachman A, Kuo MD, Menias CO, Siewert B, Cheema JI, Obregon RG, Fidler JL, Zimmerman P, Horton KM, Coakley K, Iyer RB, Hara AK, Halvorsen RA Jr, Casola G, Yee J, Herman BA, Burgart LJ, Limburg PJ (2008) Accuracy of CT colonography for detection of large adenomas and cancers. N Engl J Med 359:1207–1217CrossRefPubMed

Levin B, Lieberman DA, McFarland B, Smith RA, Brooks D, Andrews KS, Dash C, Giardiello FM, Glick S, Levin TR, Pickhardt P, Rex DK, Thorson A, Winawer SJ (2008) Screening and surveillance for the early detection of colorectal cancer and adenomatous polyps, 2008: a joint guideline from the American Cancer Society, the US Multi-Society Task Force on Colorectal Cancer, and the American College of Radiology. CA Cancer J Clin 58:130–160CrossRefPubMed

Brenner DJ, Georgsson MA (2005) Mass screening with CT colonography: should the radiation exposure be of concern? Gastroenterology 129:328–337CrossRefPubMed

van Gelder RE, Venema HW, Serlie IW, Nio CY, Determann RM, Tipker CA, Vos FM, Glas AS, Bartelsman JF, Bossuyt PM, Lameris JS, Stoker J (2002) CT colonography at different radiation dose levels: feasibility of dose reduction. Radiology 224:25–33CrossRefPubMed

Keat N (2005) Report 05016: CT scanner automatic exposure control systems. Available via http://www.impactscan.org/reports/Report05016. Accessed Mar 28 2010

Graser A, Wintersperger BJ, Suess C, Reiser MF, Becker CR (2006) Dose reduction and image quality in MDCT colonography using tube current modulation. Am J Roentgenol 187:695–701CrossRef

Rizzo SM, Kalra MK, Maher MM, Blake MA, Toth TL, Saini S (2005) Do metallic endoprostheses increase radiation dose associated with automatic tube-current modulation in abdominal-pelvic MDCT? A phantom and patient study. Am J Roentgenol 184:491–496

Hara AK (2002) The future of colorectal imaging: computed tomographic colonography. Gastroenterol Clin North Am 31:1045–1060CrossRefPubMed

Bongartz G, Golding SJ, Jurik AG, Leonardi M, van Meerten EvP, Geleijns J, Jessen KA, Panzer W, Shrimpton PC, Tosi G (2004) European guidelines on quality criteria for computed tomography. Report EUR 16262. Available via http://www.drs.dk/guidelines/ct/quality/index.htm. Accessed Mar 28 2010

10.

An S, Lee KH, Kim YH, Park SH, Kim HY, Kim SH, Kim N (2008) Screening CT colonography in an asymptomatic average-risk Asian population: a 2-year experience in a single institution. Am J Roentgenol 191:W100–W106CrossRef

11.

Hsieh J (2003) Preliminaries. In: Hsieh J (ed) Computed tomography: principles, design, artifacts, and recent advances. SPIE Optical Engineering Press, Bellingham, WA, p 34

12.

Soni NK, Cohn NA (2009) Strategies to reduce radiation dose in Philips multidetector computed tomography scanners. In: Mahesh M (ed) MDCT physics: the basics-technology, image quality and radiation dose. Lippincott Williams & Wilkins, Philadelphia, PA, pp 125–130

13.

Mulkens TH, Bellinck P, Baeyaert M, Ghysen D, Van Dijck X, Mussen E, Venstermans C, Termote JL (2005) Use of an automatic exposure control mechanism for dose optimization in multi-detector row CT examinations: clinical evaluation. Radiology 237:213–223CrossRefPubMed

14.

Adams R, Bischof L (1994) Seeded region growing. IEEE Trans Pattern Anal Mach Intell 16:641–647CrossRef

15.

Gonzalez RC, Woods RE (1992) Region-oriented segmentation. In: Gonzalez RC, Woods RE (eds) Digital image processing. Addison-Wesley Publishing Company, Reading, MA, pp 458–465

16.

Lee J, Kim G, Lee H, Shin B-S, Shin YG (2008) Fast path planning in virtual colonoscopy. Comput Biol Med 38:1012–1023

17.

Wyatt CL, Ge Y, Vining DJ (2000) Automatic segmentation of the colon for virtual colonoscopy. Comput Med Imaging Graph 24:1–9CrossRefPubMed

18.

Summers RM, Franaszek M, Miller MT, Pickhardt PJ, Choi JR, Schindler WR (2005) Computer-aided detection of polyps on oral contrast-enhanced CT colonography. Am J Roentgenol 184:105–108

19.

Gonzalez RC, Woods RE (1992) Dilation and erosion. In: Gonzalez RC, Woods RE (eds) Digital image processing. Addison-Wesley Publishing Company, Reading, MA, pp 518–524

20.

Zalis ME, Perumpillichira JJ, Magee C, Kohlberg G, Hahn PF (2006) Tagging-based, electronically cleansed CT colonography: evaluation of patient comfort and image readability. Radiology 239:149–159CrossRefPubMed

21.

Prokop M (2003) Image analysis. In: Prokop M, Galanski M (ed) Computed tomography of the body. Georg Thieme Verlag, Stuttgart, Germany, p 143

Titel: Does the amount of tagged stool and fluid significantly affect the radiation exposure in low-dose CT colonography performed with an automatic exposure control?
verfasst von: Hyun Kyong Lim
Kyoung Ho Lee
So Yeon Kim
Kil Joong Kim
Bohyoung Kim
Hyunna Lee
Seong Ho Park
Jeffrey H. Yanof
Seung-sik Hwang
Young Hoon Kim
Publikationsdatum: 01.02.2011
Verlag: Springer-Verlag
Erschienen in: European Radiology / Ausgabe 2/2011
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-010-1922-4

Neu im Fachgebiet Radiologie

18.04.2024 | Pädiatrische Notfallmedizin | Nachrichten

Update Radiologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.

Newsletter bestellen

Live-Webinar: Aktuelle Leitlinien bei Herz-Kreislauf-Erkrankungen

Springer Medizin

Does the amount of tagged stool and fluid significantly affect the radiation exposure in low-dose CT colonography performed with an automatic exposure control?

Abstract

Objective

Methods

Results

Conclusion

Neu im Fachgebiet Radiologie

Fünf Dinge, die im Kindernotfall besser zu unterlassen sind

Wie toxische Männlichkeit der Gesundheit von Männern schadet

Studie bestätigt Potenzial von KI in der Radiologie

Quantitative Angiografie könnte IVUS-Alternative darstellen

Update Radiologie

Live-Webinar: Aktuelle Leitlinien bei Herz-Kreislauf-Erkrankungen

Springer Medizin

Abstract

Objective

Methods

Results

Conclusion

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

Weitere Artikel der Ausgabe 2/2011

Optimized intravenous Flat Detector CT for non-invasive visualization of intracranial stents: first results

Characterization of ex vivo healthy human axillary lymph nodes with high resolution 7 Tesla MRI

CT fluoroscopy-guided lung biopsy versus conventional CT-guided lung biopsy: a prospective controlled study to assess radiation doses and diagnostic performance

Diagnostic accuracy of whole-body MRI/DWI image fusion for detection of malignant tumours: a comparison with PET/CT

Dual-energy CT with tin filter technology for the discrimination of renal lesion proxies containing blood, protein, and contrast-agent. An experimental phantom study

Derivation of a T2-weighted MRI total colonic inflammation score (TCIS) for assessment of patients with severe acute inflammatory colitis—a preliminary study

Neu im Fachgebiet Radiologie

Fünf Dinge, die im Kindernotfall besser zu unterlassen sind

Wie toxische Männlichkeit der Gesundheit von Männern schadet

Studie bestätigt Potenzial von KI in der Radiologie

Quantitative Angiografie könnte IVUS-Alternative darstellen

Update Radiologie