MTMI: Basic Positioning CC/MLO Views questions with correct answers, Exams of Nursing

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MTMI: Basic Positioning CC/MLO Views

questions with correct answers

2 Standard views: Answer ✓✓ CC MLO What is the hanging protocol of images: (2) Answer ✓✓ lateral alwasy up both breast mirror each other central ray enters on cc view Answer ✓✓ superiorly (cranio)- exits caudal central ray enters on MLO view Answer ✓✓ sumeromedial inferolateral Proper positioning is impportant because? (3) Answer ✓✓ Capture optimum breast tissue with the most amount of patient comfort Ensures you do not miss a possible cancer Communicates to the radiologist exactly where a lesion is located What are some positioning challanges? Answer ✓✓ Patient cooperation, PT habitus Thickness of new digital equipment What are solutions for positioning challanges? Answer ✓✓ develop a routine explain to your patient what you are doing to earn their trust/cooperation give your patient control know the mobile part of the breast and move them properly

What are the fixed anatomical borders of the breast? (2) Answer ✓✓ Medial Superior What are the mobile anatomical borders? Answer ✓✓ Lateral Inferior What are the benefits of using the anatomical borers propertly? (2) Answer ✓✓ Minimal tissue is displaced during compression Maximizes amount of tissue visualized What portion of the breast does the CC view demonstrates? (4) Answer ✓✓ Medial (best demonstrated) central retroareolar some lateral tissue Optimal CC view: (7) Answer ✓✓ Retromammary space is seen Pectoral muscle seen central to medial 30%-40% of patients Posterior nipple line (PNL) measures within 1 cm of MLO Nipple centered, straight and in profile Absence of skin folds Taut compression What are the limitations to CC view? Answer ✓✓ Lateral

What are the ACR guidelines for angle on MLO? (3) Answer ✓✓ 30-40 degrees- short heavier people 40-50 degrees- people of average height and weight 50-60 degrees- tall slender people On MLO IR should not be higher than ____________ Answer ✓✓ Axilla What happens to the pec muscle if IR is too high on MLO? Answer ✓✓ pec muscle to become vertical on MLO squeezing your arm will cause pec muscle to become: Answer ✓✓ concave What is the manuever used to lift the breast up and out? Answer ✓✓ Bi-manual pull Optimal MLO view: Answer ✓✓ Breast in the center of the IR No air gaps between PT and IR at axilla Nipple in profile IMF in profile MLO Critique: (7) Answer ✓✓ Pec muscle convex Pec muscle wide at the top and to the level of PNL Mound of breast out and up Nipple in profile

IMF included and open Free of skin folds Taut compression To what level do you lift the breast on CC view? Answer ✓✓ NPL is perpendicular to chest wall What is the manuever to get rid of lateral skin folds on CC view? Answer ✓✓ Finger print roll What is the lateral border of the breast that help us position on MLO? Answer ✓✓ mid-axillary line Where does the corder of the IR should be placed on MLO? Answer ✓✓ between latissimus dorsi and pec muscle What happens if the IR is too high on MLO? 3 Answer ✓✓ air gap IMF not in profile inferior tissue clipped What tissue is missed if IR is too low on MLO? Answer ✓✓ axillary tissue Accurate positioning of the posterolateral tissue(mid axillary line in front of IR on MLO helps with? Answer ✓✓ minimizes loss of medial tissue maximazes length of pectoral muscle

What is the result of improper positioning of UP and OUT on MLO? Answer ✓✓ IMF not open breast drooping Camel nose The NPL should be no more than how many CM different between CC view and MLO Answer ✓✓ 1 cm On MLO the best angle of xray tube is? Answer ✓✓ Angle parallel to PT pec muscle