In which technique of cancer detection, low energy beams are used and films of the soft breast tissue are taken without the use of a radio-opaque medium?

1. A

   Mammography

2. B

   Xerography

3. C

   Thermography

4. D

   Computed Tomography

Appeared in: WCL Staff Nurse - 2022

Explanation

• Mammography is the standard screening tool for breast cancer that uses low-dose X-rays (a type of low-energy beam) to examine breast tissue.
• It is specifically designed to visualize soft tissues and can detect abnormalities such as masses and microcalcifications, which are early signs of cancer.
• Standard screening mammography is a non-invasive procedure and does not require the use of a radio-opaque contrast medium.

Why Other Options Were Wrong

• Option B: Xerography is an obsolete imaging technique that used X-rays and a selenium-coated plate. It has been largely replaced by digital mammography, which provides better image quality at a lower radiation dose.
• Option C: Thermography uses an infrared camera to measure and map heat patterns on the surface of the breast. It does not use any type of 'beam'. It is not recommended as a standalone screening tool due to its high rates of false-positive and false-negative results.
• Option D: Computed Tomography (CT) uses X-rays but delivers a much higher radiation dose than mammography. It is not used for routine breast cancer screening. Furthermore, CT scans of the chest or abdomen often involve the injection of a radio-opaque contrast medium to enhance the visibility of organs and blood vessels.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Breast Cancer Imaging Techniques as background academic context rather than a clinical decision trigger.
• A key nursing role is patient education. Instruct patients to avoid using deodorant, antiperspirant, or lotion under their arms or on their breasts on the day of the exam, as these products can contain metallic substances that may appear on the mammogram and be mistaken for calcifications.
• Advise patients to schedule their mammogram for the week following their menstrual period, when breasts are typically less tender, to minimize discomfort during compression.
• What if the patient has breast implants? The nurse should ensure the imaging facility is aware, as special techniques (implant displacement views) are required to push the implant back and pull the breast tissue forward for better visualization.

How to Approach the Question

• First, identify the key phrases in the question: 'low energy beams', 'soft breast tissue', and 'without the use of a radio-opaque medium'.
• Consider each option in light of these criteria.
• Eliminate 'Thermography' because it measures heat and does not use beams.
• Eliminate 'Computed Tomography' because it uses high-energy beams and often requires a contrast medium; it's not a screening tool.
• Differentiate between 'Mammography' and 'Xerography'. Recognize that mammography is the current standard of care, while xerography is an obsolete technique.
• Conclude that Mammography is the only modern technique that fits all the criteria mentioned in the question for routine breast cancer screening.

Concept Tested & Keywords

• Concept Tested: Breast Cancer Imaging Techniques
• Stem keywords: cancer detection, soft breast tissue, low energy beams, without radio-opaque medium
• Lead-in keywords: In which technique
• Negative lead-in flag: false

Question ID

QHLCKWXLIr7TZ1-amUslO9

Copy ID

Reference Book

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 3 p. 48-50

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 1039-1041