Title MRI dojke-uloga radiološkog tehnologa
Title (english) THE ROLE OF THE RADIOLOGIC TECHNOLOGIST IN MR BREAST IMAGING
Author Iris Prug
Mentor Tade Tadić (mentor)
Committee member Tade Tadić (član povjerenstva)
Committee member Sanja Lovrić Kojundžić (predsjednik povjerenstva)
Committee member Ivana Štula (član povjerenstva)
Granter University of Split (University Department of Health Studies) Split
Defense date and country 2019-07-12, Croatia
Scientific / art field, discipline and subdiscipline BIOMEDICINE AND HEALTHCARE Clinical Medical Sciences
Abstract Dojke su parne mliječne žlijezde, smještene na prednjoj strani prsnog koša. Fizički postoje kod oba spola, no funkcionalno su razvijene samo kod žena. Patološke promjene dojke mogu biti benigne i maligne, a upravo je karcinom dojke najčešće maligno oboljenje kod žena. Mamografija i ultrazvuk su već godinama standardne metode izbora u dijagnostici bolesti dojke dok se magnetska rezonanca istih koristi kao dodatna metoda.
Magnetska rezonanca (MR) je neinvazivna radiološka metoda koja za dobivanje slike koristi jako magnetsko polje što znači da kod izvođenja pretrage nema izlaganja pacijenta ionizirajućem zračenju. Omogućuje nam multiplanarni prikaz snimanog dijela te precizno razlikovanje mekotkivnih struktura. Najkraće rečeno, MR pretraga odvija se u četiri osnovna koraka: namještanje pacijenta na stol uređaja, emitiranje pulsa radiofrekventne (RF) zavojnice, detektiranje signala iz snimanog područja pomoću zavojnice te na kraju pretvorba signala u sliku uz pomoć algoritama u računalu.
Znanje i uloga radiološkog tehnologa bitan su preduvjet dobivanja kvalitetne i dijagnostički iskoristive MR slike. Najprije kroz pravilno namještanje pacijenta te kasnije kroz odabir ispravnih sekvenci i parametara tijekom snimanja. Važno je prepoznati moguće artefakte koji nastaju tijekom snimanja te ih smanjiti ili eliminirati ako je to moguće. Artefakti mogu nastati zbog micanja pacijenta, preklapanja signala, kemijskog pomaka ili metalnih predmeta unutar tijela pacijenta ili u njegovoj blizini. Neprepoznavanje artefakata smanjuje pouzdanost nastale slike te može dovesti do krive interpretacije nalaza.
U današnje vrijeme MR oslikavanje dojki još je predmet brojnih istraživanja zbog svoje visoke osjetljivosti, a manje specifičnosti. Kod samog izvođenja pretrage koristimo RF zavojnicu za dojke te primjenjujemo kontrastno sredstvo na bazi gadolinija. Indikacije za pregled dojki MR-om mogu biti nejasni nalazi dobiveni mamografijom ili ultrazvukom, procjena stadija tumora dojke prije operacije, probir kod žena s vrlo visokim rizikom za razvoj karcinoma dojke, oslikavanje silikonskih implantata te biopsije lezija koje nisu vidljive ultrazvukom.
Abstract (english) Breasts are paired glands, located on the front side of the thorax, predetermined to produce milk in the period of nursing. Physically, they exist in both sexes, but functionally are developed only in women. Pathological changes in the breast can be benign and malignant, and breast cancer is the most common malignant disease in women. Mammography and ultrasound have been the standard choice for breast cancer diagnosis for years, while magnetic resonance imaging is used as an additional method.
Magnetic Resonance (MR) is a non-invasive radiological method that uses a strong magnetic field to produce a picture, meaning that there is no exposure of the patient to ionizing radiation during the search. It gives us multiplanar images of the recorded part and allows us to precisely distinguish the soft-tissue structures. Shortly, the MR scan takes place in four basic steps: positioning the patient in the MR machine, transmitting the radio frequency (RF) coil pulse, detecting the signal from the recorded area with the coil, and finally converting the signal into the image with the aid of algorithms on computer.
The knowledge and role of a radiologist are essential for getting quality and diagnostic MR images. First through proper patient adjustment and later through selection of the correct sequences and parameters during imaging. It is important to recognize the possible artifacts that may appear during imaging and to reduce or eliminate them if possible. Artifacts can be caused by moving the patient, wrapping around the signal, chemical shift or metal objects within or near the patient's body. Non-recognition of artifacts reduces the reliability of the resulting image and leads to their wrong interpretation.
At present, MR breast imaging is still a subject of numerous researches because of its high sensitivity and less specificity. When performing the imaging we use the RF coil for the breast and apply a contrast medium on gadolinium basis. Indications for MR breast screening may be unclear findings obtained by mammography or ultrasound, evaluation of breast tumor stage prior to surgery, screening in women with very high breast cancer risk, silicone implant imaging, and biopsy of lesions that can not be seen on ultrasound.
Keywords
uloga
radiološki tehnolog
MR dojke (ključne riječi unio urednik)
Keywords (english)
the role
radiologic technologist
MR breast imaging (ključne riječi unio urednik)
Language croatian
URN:NBN urn:nbn:hr:176:862146
Study programme Title: Radiologic Technology (university/undergraduate) Study programme type: university Study level: undergraduate Academic / professional title: sveučilišni prvostupnik/prvostupnica (baccalaureus/baccalaurea) radiološke tehnologije (sveučilišni prvostupnik/prvostupnica (baccalaureus/baccalaurea) radiološke tehnologije)
Type of resource Text
File origin Born digital
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Created on 2020-06-19 12:08:13