Indian Journal of Radiology Indian Journal of Radiology  

   Login   | Users online: 2049

Home Bookmark this page Print this page Email this page Small font sizeDefault font size Increase font size     

 

 Table of Contents    
INTERVENTIONAL  
Year : 2011  |  Volume : 21  |  Issue : 1  |  Page : 13-14
Technical note: Reduction of radiation dose using ultrasound guidance during transjugular intrahepatic portosystemic shunt procedure


Department of Radiology, Christian Medical College, Vellore - 632 004, India

Click here for correspondence address and email

Date of Web Publication22-Jan-2011
 

   Abstract 

The transjugular intrahepatic portosystemic shunt (TIPS) procedure for decompression of the portal venous system generally performed under fluoroscopic guidance has undergone continuous technical modifications recently. Due to the length of the procedure, the fluoroscopy times are reasonably high, thus increasing the risk from ionizing radiation. Radiation doses were measured for 19 patients using dose area product (DAP) meter. The average DAP value for the TIPS procedure was 63.86 Gy cm 2 (21.12-117.07). Radiation doses to patients can be reduced with the use of USG guidance and intermittent fluoroscopy screening.

Keywords: Radiation dose; TIPS; ultrasound

How to cite this article:
Livingstone RS, Keshava SN. Technical note: Reduction of radiation dose using ultrasound guidance during transjugular intrahepatic portosystemic shunt procedure. Indian J Radiol Imaging 2011;21:13-4

How to cite this URL:
Livingstone RS, Keshava SN. Technical note: Reduction of radiation dose using ultrasound guidance during transjugular intrahepatic portosystemic shunt procedure. Indian J Radiol Imaging [serial online] 2011 [cited 2019 Oct 18];21:13-4. Available from: http://www.ijri.org/text.asp?2011/21/1/13/76046

   Introduction Top


The transjugular intrahepatic portosystemic shunt (TIPS) procedure for decompression of the portal venous system generally performed under fluoroscopic guidance has undergone continuous technical modifications in the current scenario. [1] One advance described in 2001 involves a direct intrahepatic portocaval shunt (DIPS) that entails an intravascular USG (IVUS)-guided puncture directly from the inferior vena cava (IVC) to the portal vein (PV). [2],[3] A major advantage of USG guidance is the direct visualization of the needle track during puncture of the PV, eliminating the "blind" PV puncture during the standard TIPS technique. This potentially improves the safety and effectiveness of this procedure. [3]


   Materials and Methods Top


In our study, all TIPS procedures were performed using a DSA machine (Multistar, Siemens, Erlangen, Germany). Nineteen patients who underwent TIPS procedure were involved in the study. In 17 out of 19 patients, the shunt was created from the IVC to the portal vein and in 2 out of 19 patients, from the right hepatic vein to the portal vein. The USG transducer was kept on the right anterolateral aspect of the abdomen in an oblique sagittal plane to visualize both, the right branch of the portal vein and the IVC [Figure 1]. The fluoroscopic plane was almost perpendicular along the left anterior oblique plane [Figure 1]. Fluoroscopy screening was not performed while at the time of USG screening.
Figure 1 :A line diagram shows the orientation of the ultrasound (U) transducer in the right antero-lateral aspect of the abdomen along the right branch of the portal vein and the inferior vena cava (I). The fluoroscopic (F) orientation is demonstrated in the left anterior oblique plane. A shrunken liver (L) surrounded by ascitic fluid (A) is represented

Click here to view


The average dose area product (DAP) measured using a DAP meter was 63.86 Gy cm 2 (21.12-117.07). The average DAP contributions from fluoroscopy and image acquisitions were 48.06 Gy cm 2 (5.28-96.59) and 15.8 Gy cm 2 (2.13-63.91), respectively.


   Results and Discussion Top


In our center, TIPS and modified TIPS (cavoportal shunt/DIPS) are performed using fluoroscopy and abdominal USG guidance. [4] We believe that the use of USG guidance has a high success rate with minimal complications and a reduction in the length of the entire procedure. Apart from the clinical invasiveness of the procedure, TIPS is a procedure that produces high radiation doses as compared to other interventional procedures in the heart and skull, [5] with lengthy fluoroscopy times of the order of 30 min to 1 h or more depending upon the complexity of the study. [5] Zweers et al. have reported fluoroscopy times ranging from 9 to 115 min with total procedures lengths of 40-330 min. [6] Our study had an average fluoroscopy duration for the DIPS procedure of 19.2 min (4-32.1), leading to a notable reduction in the overall duration of the procedure. The doses reported in our study are significantly less as compared to those reported by Zweers et al., which ranged from 7 to 354 Gy cm 2 . [6]

In conclusion, the use of USG guidance with intermittent fluoroscopy can reduce the length of the procedure, fluoroscopy times, number of image acquisitions, and radiation doses imparted to patients while performing the TIPS procedure.

 
   References Top

1.Rossle M, Siegerstetter V, Huber M, Ochs A. The first decade of the transjugular intrahepatic portosystemic shunt (TIPS): state of the art. Liver 1998;18:73-89.  Back to cited text no. 1
    
2.Petersen B, Uchida BT, Timmermans H, Keller FS, Rosch J. Intravascular US-guided direct intrahepatic portacaval shunt with a PTFE-covered stent-graft: feasibility study in swine and initial clinical results. J Vasc Interv Radiol 2001;12:475-86.  Back to cited text no. 2
[PUBMED]    
3.Hoppe H, Wang SL, Petersen BD. Intravascular US-guided direct intrahepatic portocaval shunt with an expanded polytetrafluoroethylene-covered stent-graft. Radiology 2008;246:306-14.  Back to cited text no. 3
[PUBMED]  [FULLTEXT]  
4.Keshava SN, Kota GK, Mammen T, Jeyamani R, Moses V, Govil S, et al. Direct intrahepatic cavo-portal shunts in Budd-Chiari syndrome: Role of simultaneous fluoroscopy and trans-abdominal ultrasonography. Indian J Gastroenterol 2006;25:248-50.  Back to cited text no. 4
    
5.Wagner LK, McNeese MD, Marx MV, Siegel EL. Severe skin reaction from interventional fluoroscopy: case report and review of the literature. Radiology 1999;213:773-6.  Back to cited text no. 5
[PUBMED]  [FULLTEXT]  
6.Zweers D, Geleijns J, Aarts NJ, Hardam LJ, Lameris JS, Schulz FW, et al. Patient and staff radiation dose in fluoroscopy-guided TIPS procedures and dose reduction, using dedicated fluoroscopy exposure settings. Br J Radiol 1998;71:672-6.  Back to cited text no. 6
    

Top
Correspondence Address:
Roshan S Livingstone
Department of Radiology, Christian Medical College, Vellore - 632 004
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-3026.76046

Rights and Permissions


    Figures

  [Figure 1]



 

Top
 
 
  Search
 
   Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Email Alert *
    Add to My List *
* Registration required (free)  


    Abstract
    Introduction
    Materials and Me...
    Results and Disc...
    References
    Article Figures

 Article Access Statistics
    Viewed2641    
    Printed174    
    Emailed1    
    PDF Downloaded247    
    Comments [Add]    

Recommend this journal