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CT colonography: a survey of general practitioners’ knowledge and interest

  • ABDOMINAL RADIOLOGY
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Abstract

Purpose

To verify the knowledge and interest of general practitioners on computed tomography colonography (CTC).

Materials and methods

In 2014, a Web-based questionnaire was proposed to all general practitioners of [Milan, Italy]. The questionnaire consisted of ten questions concerning general practitioners’ knowledge about CTC, including application of guidelines in clinical scenarios and diagnostic performance.

Results

Out of 1,053 general practitioners, 231 (22 %), 155 men and 76 women (mean age 58 years), completed the survey. We found a significant difference between the age of responders and that of non-responders (p = 0.0033). Of the 231 responders, 84 % were aware of the possibility of using CTC as a method for examining the colon–rectum. However, only 57 % were aware about low X-ray exposure delivered by CTC and about the possibility of using a reduced cleansing protocol. Only 48 % were aware that CTC accuracy in diagnosing 10-mm or larger polyps and colorectal cancers was similar to that of conventional colonoscopy, while 62 % were informed about CTC advantages in comparison with double-contrast barium enema; 59 % thought that CTC had a potential role as a screening test; 85–86 % suggested CTC in the case of refused or incomplete conventional colonoscopy; 79 % suggested immediate conventional colonoscopy in the case of at least one 10-mm polyp. About 54 % usually prescribe one CTC every 4–6 months, while 36 % never have, 3 % one CTC per month, and 7 % one every 2–3 months. Ninety-four per cent declared that they were willing to attend a course on CTC.

Conclusion

General practitioners have limited knowledge concerning CTC. Radiological societies should fill this gap offering dedicated educational initiatives.

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References

  1. Halligan S, Marmo R, Taylor SA, Pickhardt PJ (2011) Colorectal Cancer: CT colonography and colonoscopy for detection systematic review and meta-analysis. Radiology 259(2):393–405

    Article  PubMed  PubMed Central  Google Scholar 

  2. Kim DH, Pickhardt PJ, Taylor AJ et al (2007) CT colonography versus colonoscopy for the detection of advanced neoplasia. N Engl J Med 357(14):1403–1412

    Article  PubMed  CAS  Google Scholar 

  3. Johnson CD, Chen MH, Toledano AY et al (2008) Accuracy of CT colonography for detection of large adenomas and cancers. N Engl J Med 359(26):1207–1217

    Article  PubMed  CAS  PubMed Central  Google Scholar 

  4. Regge D, Laudi C, Galatola G et al (2009) Diagnostic accuracy of computed tomographic colonography for the detection of advanced neoplasia in individuals at increased risk of colorectal cancer. J Am Med Assoc 301(23):2453–2461

    Article  CAS  Google Scholar 

  5. Graser A, Stieber P, Nagel D et al (2009) Comparison of CT colonography, colonoscopy, sigmoidoscopy and faecal occult blood tests for the detection of advanced adenoma in an average risk population. Gut 58(2):241–248

    Article  PubMed  CAS  Google Scholar 

  6. Spada C, Stoker J, Alarcon O et al (2015) Clinical indications for computed tomography colonography: European society of gastrointestinal endoscopy (ESGE) and european society of gastrointestinal and abdominal radiology (ESGAR) Guideline. Eur Radiol 25(2):331–345

    Article  PubMed  PubMed Central  Google Scholar 

  7. McHugh M, Osei-Anto A, Klabunde CN, Galen BA (2011) Adoption of CT colonography by US hospitals. J Am Coll Radiol 8:169–174

    Article  PubMed  PubMed Central  Google Scholar 

  8. Lung PFC, Burling D, Kallarackel L et al (2014) Implementation of a new CT colonography service: 5 year experience. Clin Radiol 69:597–605

    Article  PubMed  CAS  Google Scholar 

  9. Fisichella VA, Hellstrom M (2010) Survey update on implementation, indications, and technical performance of computed tomography colonography in Sweden. Acta Radiol 51:4–8

    Article  PubMed  Google Scholar 

  10. Steward MJ, Taylor SA, Halligan S (2014) Abdominal computed tomography, colonography and radiation exposure: what the surgeon needs to know. Colorectal Dis 16:347–352

    Article  PubMed  CAS  Google Scholar 

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

    Article  PubMed  Google Scholar 

  12. Chang MS, Shah JP, Amin S et al (2007) Physician knowledge and appropriate utilization of computed tomographic colonography in colorectal cancer screening. Abdom Imag 36(5):524–531

    Article  Google Scholar 

  13. Bowling A (1997) Data collection methods in quantitative research: questionnaire, interviews and their response rates. In: Bowling A (ed) Research methods in health: investigating health and health service. Open University Press, Buckingham, pp 227–270

    Google Scholar 

  14. Asch DA, Jedrziewsky MK, Christakis NA (2007) Response rates to mail surveys published in medical journals. J Clin Epidemiol 50:1129–1136

    Article  Google Scholar 

  15. Grava-Gubin I, Scott S (2008) Effects of various methodologic strategies, surveys response rates among Canadian physicians and physicians in-training. Can Fam Physician 54:1424–1430

    Google Scholar 

  16. Cummings SM, Savitz LA, Konrad TR (2001) Reported response rates to mailed physician questionnaires. Health Serv Res 35:1347–1355

    PubMed  CAS  PubMed Central  Google Scholar 

  17. Kaner EF, Haighton CA, McAvoy BR (1998) So much post, so busy with practice, so no time! A telephone survey of general practitioners’ reasons for not participating in postal questionnaire surveys. Br J Gen Pract 48:1067–1069

    PubMed  CAS  PubMed Central  Google Scholar 

  18. Stocks N, Gunnell D (2000) What are the characteristics of GPs who routinely do not return postal questionnaire: a cross sectional study. J Epidemiol Commun Health 54:940–941

    Article  CAS  Google Scholar 

  19. Hummers-Pradier E, Scheidt-Nave C, Martin H et al (2008) Simply no time ? Barriers to GPs participation in primary health care research. Fam Pract 25:105–112

    Article  PubMed  Google Scholar 

  20. Bonevski B, Magin P, Horton G, Foster M, Girgis A (2011) Response rates in GP surveys. Aust Fam Phys 40(6):427–430

    Google Scholar 

  21. Murphy J, Eyerman J, Kennet J (2004) Nonresponse among persons age 50 and older in the national survey on drug use and health. In: Cohen SB and Lepkowsky JM (eds) Proceedings of the eighth conference oh health survey research methods

  22. Halligan S, Wooldrage K, Dadswell E, Kralj-Hans I, von Wagner C et al (2013) Computed tomographic colonography versus barium enema for diagnosis of colorectal cancer or large polyps in symptomatic patients (SIGGAR): a multicentre randomised trial. Lancet 381(9873):1185–1193

    Article  PubMed  Google Scholar 

  23. Behrens C, Stevenson G, Eddy R et al (2010) The benefits of CT Colonography in reducing a long colonoscopy waiting list. Can Assoc Radiol J 61(1):33–40

    Article  PubMed  Google Scholar 

  24. Neri E, Faggioni L, Cerri F et al (2010) CT colonography versus double contrast barium enema for screening of colorectal cancer: comparison of radiation burden. Abdom Imaging 35(5):596–601

    Article  PubMed  Google Scholar 

  25. Von Wagner C, Smith S, Halligan S et al (2011) Patient acceptability of CT colonography compared with double contrast barium enema: results from a multicenter randomized controlled trial of symptomatic patients. Eur Radiol 21(10):2046–2055

    Article  Google Scholar 

  26. Yee J, Kim DH, Rosen MP et al (2014) ACR appropriateness criteria colorectal cancer screening. J Am Coll Radiol 11:543–551

    Article  PubMed  Google Scholar 

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Acknowledgments

We thank Andrea Verzoni, Biomedical Engineering of our Hospital, for his valuable contribution in conducting the survey.

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Correspondence to Nicola Flor.

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All the authors declare that they have no conflict of interest.

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All procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Flor, N., Laghi, A., Peri, M. et al. CT colonography: a survey of general practitioners’ knowledge and interest. Radiol med 121, 1–5 (2016). https://doi.org/10.1007/s11547-015-0569-2

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