MR imaging of perianal fistulas in Crohn’s disease: sensitivity and specificity of STIR sequences

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10 Citazioni (Scopus)

Abstract

Introduction: Although some studies proved the role of STIR sequences in the evaluation of perianal fistulas in Crohn’s Disease (CD), contrast medium is still injected in many institutions since there is not a validated reference MR protocol. Our purpose was to evaluate the role of the STIR sequence in the detection and characterization of perianal fistulae comparing it to the post-contrast T1 sequence and correlating it with rectal examination under anesthesia. Materials and methods: We retrospectively reviewed all clinical records of 31 CD patients, suspected of having perianal fistulas, who had been submitted to an MR study before and after contrast medium injection and surgical exploration under anesthesia within the same month. Perianal fistulas were classified according to the Parks’ criteria. Finally, comparison between STIR and post-contrast T1-weighted fat saturated sequences was done. Results: 29 fistulas were detected in 25 patients who underwent an MR study. There was no significant difference between MR imaging and exploration under anesthesia. For the detection of perianal fistulas of any type, there was a perfect statistical agreement between gadolinium-enhanced and STIR sequences (kappa value = 1). Conclusion: STIR sequences represent a valid alternative to the T1-weighted sequences acquired after the injection of contrast medium, allowing the identification of the primary fistula, any secondary ramification, and complications of the disease.
Lingua originaleEnglish
pagine (da-a)1-9
Numero di pagine9
RivistaLA RADIOLOGIA MEDICA
Stato di pubblicazionePublished - 2015

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Crohn Disease
Fistula
Sensitivity and Specificity
Contrast Media
Anesthesia
Injections
Gadolinium
Fats

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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title = "MR imaging of perianal fistulas in Crohn’s disease: sensitivity and specificity of STIR sequences",
abstract = "Introduction: Although some studies proved the role of STIR sequences in the evaluation of perianal fistulas in Crohn’s Disease (CD), contrast medium is still injected in many institutions since there is not a validated reference MR protocol. Our purpose was to evaluate the role of the STIR sequence in the detection and characterization of perianal fistulae comparing it to the post-contrast T1 sequence and correlating it with rectal examination under anesthesia. Materials and methods: We retrospectively reviewed all clinical records of 31 CD patients, suspected of having perianal fistulas, who had been submitted to an MR study before and after contrast medium injection and surgical exploration under anesthesia within the same month. Perianal fistulas were classified according to the Parks’ criteria. Finally, comparison between STIR and post-contrast T1-weighted fat saturated sequences was done. Results: 29 fistulas were detected in 25 patients who underwent an MR study. There was no significant difference between MR imaging and exploration under anesthesia. For the detection of perianal fistulas of any type, there was a perfect statistical agreement between gadolinium-enhanced and STIR sequences (kappa value = 1). Conclusion: STIR sequences represent a valid alternative to the T1-weighted sequences acquired after the injection of contrast medium, allowing the identification of the primary fistula, any secondary ramification, and complications of the disease.",
author = "Antonio Pinto and Massimo Midiri and Roberto Lagalla and Sergio Salerno and Massimo Galia and Galfano, {Maria Cristina} and Francesco Agnello and Chiara Tudisca and Dario Picone and Federica Vernuccio and Ennio Biscaldi and Antonio Pinto",
year = "2015",
language = "English",
pages = "1--9",
journal = "LA RADIOLOGIA MEDICA",

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TY - JOUR

T1 - MR imaging of perianal fistulas in Crohn’s disease: sensitivity and specificity of STIR sequences

AU - Pinto, Antonio

AU - Midiri, Massimo

AU - Lagalla, Roberto

AU - Salerno, Sergio

AU - Galia, Massimo

AU - Galfano, Maria Cristina

AU - Agnello, Francesco

AU - Tudisca, Chiara

AU - Picone, Dario

AU - Vernuccio, Federica

AU - Biscaldi, Ennio

AU - Pinto, Antonio

PY - 2015

Y1 - 2015

N2 - Introduction: Although some studies proved the role of STIR sequences in the evaluation of perianal fistulas in Crohn’s Disease (CD), contrast medium is still injected in many institutions since there is not a validated reference MR protocol. Our purpose was to evaluate the role of the STIR sequence in the detection and characterization of perianal fistulae comparing it to the post-contrast T1 sequence and correlating it with rectal examination under anesthesia. Materials and methods: We retrospectively reviewed all clinical records of 31 CD patients, suspected of having perianal fistulas, who had been submitted to an MR study before and after contrast medium injection and surgical exploration under anesthesia within the same month. Perianal fistulas were classified according to the Parks’ criteria. Finally, comparison between STIR and post-contrast T1-weighted fat saturated sequences was done. Results: 29 fistulas were detected in 25 patients who underwent an MR study. There was no significant difference between MR imaging and exploration under anesthesia. For the detection of perianal fistulas of any type, there was a perfect statistical agreement between gadolinium-enhanced and STIR sequences (kappa value = 1). Conclusion: STIR sequences represent a valid alternative to the T1-weighted sequences acquired after the injection of contrast medium, allowing the identification of the primary fistula, any secondary ramification, and complications of the disease.

AB - Introduction: Although some studies proved the role of STIR sequences in the evaluation of perianal fistulas in Crohn’s Disease (CD), contrast medium is still injected in many institutions since there is not a validated reference MR protocol. Our purpose was to evaluate the role of the STIR sequence in the detection and characterization of perianal fistulae comparing it to the post-contrast T1 sequence and correlating it with rectal examination under anesthesia. Materials and methods: We retrospectively reviewed all clinical records of 31 CD patients, suspected of having perianal fistulas, who had been submitted to an MR study before and after contrast medium injection and surgical exploration under anesthesia within the same month. Perianal fistulas were classified according to the Parks’ criteria. Finally, comparison between STIR and post-contrast T1-weighted fat saturated sequences was done. Results: 29 fistulas were detected in 25 patients who underwent an MR study. There was no significant difference between MR imaging and exploration under anesthesia. For the detection of perianal fistulas of any type, there was a perfect statistical agreement between gadolinium-enhanced and STIR sequences (kappa value = 1). Conclusion: STIR sequences represent a valid alternative to the T1-weighted sequences acquired after the injection of contrast medium, allowing the identification of the primary fistula, any secondary ramification, and complications of the disease.

UR - http://hdl.handle.net/10447/158443

UR - http://link.springer.com/journal/11547

M3 - Article

SP - 1

EP - 9

JO - LA RADIOLOGIA MEDICA

JF - LA RADIOLOGIA MEDICA

ER -