Volume 11 Issue 1 (February) - Australasian Society for Ultrasound ...

More documents

Recommendations

Info

What factors are associated with parental desire to find out the sex of their baby? Psychological and Obstetrical Responses of Mothers following Antenatal Fetal Sex Identification. J Obstet Gynaecol Res 1999; 25: 43–50. 10 Shipp TD , Shipp DZ, Bromley B, Sheahan R, Cohen A, Lieberman E, Benacerraf B. What Factors Are Associated with Parents’ Desire To Know the Sex of Their Unborn Child? Birth 2004; 31: 272–79. 11 Health Council of the Netherlands; Prenatal Screening; Down’s syndrome, neural tube defects. The Hague: Health Council of the Netherlands, 2004; publication no. 2004/06. 12 Gudex C, Nielsen BL, Madsen M. Why women want prenatal ultrasound in normal pregnancy. Ultrasound Obstet Gynecol 2006; 27: 145–50. 13 Humphreys AS, Thompson NJ, Miner KR; Intention to Breastfeed in Low-Income Pregnant Women: The Role of Social Support and Previous Experience, Birth 1998; 25: 3:169–174. 14 Walker MK and Conner GK. Fetal sex preference of second-trimester gravidas. J Nurse-Midwif 1993; 38: 110–13. 15 Harrington K, Armstrong V, Freeman J, Aquilina J and Campbell S. Fetal sexing by ultrasound in the second trimester: maternal preference and professional ability. Ultrasound Obstet Gynecol 1996; 8: 318–21. 16 Lea JH. Psychological progression through pregnancy, A Model for Sonographer-Patient Interaction. J Diag Med Sonog 1985; 1: 55–8. 24 ASUM Ultrasound Bulletin 2008 February 11 (1)
ASUM Ultrasound Bulletin February 2008; 11 (1): 25–29 DIAGNOSTIC ULTRASOUND Interventional ultrasound – general principles and applications in gastroenterology Torben Lorentzen 1 and Christian Nolsøe 2 1 Department of Gastroenterologic Surgery, Copenhagen University Hospital at Herlev, 2 Department of Radiology, Copenhagen University Hospital at Koege, Denmark. Correspondence to Torben Lorentzen. Email tlo@dadlnet.dk Fig. 1a Equipment in interventional US. 1a Needle guide made of metal is attached to the transducer, which is inside a sterile cover. A large cutting needle (mounted in the biopsy gun) is inserted in the needle guide that can be adjusted for different sizes of needles and catheters. 1b Ready for a liver biopsy. The needle will follow the puncture line seen on the monitor, (modelphoto). Fig. 1b Introduction Ultrasound (US) imaging, because it is in real time, is an unsurpassed imaging guide for interventional procedures. It is rapid and convenient, all puncture directions are possible and it allows continuous visualisation of the needle tip during a needle insertion. There is no ionising radiation and the equipment is mobile and relatively inexpensive. Because of these advantages, US and US-guided interventional procedures have gained widespread use. Interventional procedures are minimally invasive, less time consuming and gentle alternatives to, or replacements for, many surgical procedures and have consequently had a great impact on the management of numerous diseases. In this paper, we focus on the general principles of interventional US and give some examples of diagnostic and therapeutic applications in gastroenterology. The typical US examination in gastroenterology includes abdominal imaging of the liver, gall bladder, pancreas, GItract, spleen and retroperitoneum. The liver and pancreas might be examined in more detail with a surgical approach using intraoperative US (IUS), laparoscopic US (LUS), or endoscopic US (EUS). Furthermore, ano-rectal diseases and pelvic fluid collections might be examined with transrectal or transvaginal US. Both the ‘classic’ abdominal US as well as the surgically US approach can guide interventional procedures. Guidance technique A needle guide can be attached to the transducer as seen in Fig. 1a. The needle guides are either sterilised disposable utensils or reusable devices that need to be sterilised between procedures. Using a needle guide provides safer control of the needle during insertion, but at the cost of reduced flexibility of needle manipulation and limited degree of freedom regarding direction of puncture. The transducer produces two-dimensional images of the scanned object, which is a three-dimensional structure. As the first step in the interventional procedure, the transducer is moved over the area of interest until the scanning sector traverses the target, which is then visualised on the monitor (Fig. 2). When the needle guide button on the scanner display is activated, the puncture line appears on the monitor (Fig. 1b). The transducer is then moved until the puncture line goes through the target, which implies that a needle inserted through the attached needle guide will be able to hit the target. The point where the needle will penetrate the skin is marked with ink and local anaesthesia is applied. Then, the needle guide is mounted on the transducer and, depending on the size of the device to be inserted, a small skin incision may be made. The planned intervention can now be performed. If necessary, consecutive needle passes may be carried out through the same incision. ASUM Ultrasound Bulletin 2008 February 11 (1) 25
Page 1 and 2: ISSN 1441-6891 ISSN 1441-6891 Volum
Page 3 and 4: President Dr Matthew Andrews Honora
Page 5 and 6: Provisional Program Please visit ww
Page 7 and 8: EDITORIAL Authors in Ireland, Denma
Page 9 and 10: THE EXECUTIVE Pace picks up for WFU
Page 11 and 12: THE EXECUTIVE COUNCIL 2005-2007 CEO
Page 13 and 14: 2nd Annual Meeting of the Indonesia
Page 15 and 16: Australian charts for assessing fet
Page 21 and 22: ASUM Ultrasound Bulletin February 2
Page 23 and 24: What factors are associated with pa
Page 25: What factors are associated with pa
Page 29 and 30: Interventional ultrasound - general
Page 31 and 32: Interventional ultrasound - general
Page 33 and 34: Fetal intracranial abnormalities in
Page 39 and 40: Advertisement “We now see a 50 pe
Page 41 and 42: ASUM Ultrasound Bulletin February 2
Page 43 and 44: ASM 2007 Abstracts 503 The safety m
Page 45 and 46: ASM 2007 Abstracts predict the norm
Page 47 and 48: “Approximately 20 to 50 percent o
Page 49 and 50: REVIEWS Scanning the journals Anten
Page 51 and 52: ExpAnd yoUr horizons Australia •
Page 53 and 54: REPORTS DMU 2007 report 2007 has be
Page 55 and 56: Advertisement “With Protocols, so
Page 57 and 58: CALENDAR Calendar of ultrasound eve
Page 59 and 60: 18 reasons (at least) why you shoul

Volume 11 Issue 1 (February) - Australasian Society for Ultrasound ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?