Which imaging technique can provide information about brain function?
Skull radiograph.
Magnetic resonance imaging (MRI) scan.
Positron emission tomography (PET) scan.
Computed tomography (CT) scan.
The Correct Answer is C
Choice A rationale
A skull radiograph (X-ray) is a two-dimensional imaging technique that primarily visualizes bone structure and density, which is useful for identifying fractures, calcification, or foreign objects. It provides no information on the metabolic activity or blood flow of brain tissue, which are the biological substrates of brain function.
Choice B rationale
Magnetic resonance imaging (MRI) uses strong magnetic fields and radio waves to generate detailed anatomical images of soft tissues, including the brain. It provides excellent structural resolution (detecting tumors or lesions) but, in its standard form, offers limited direct, quantitative data on real-time cellular energy consumption or neurotransmitter activity, which characterize function.
Choice C rationale
Positron Emission Tomography (PET) scan is a nuclear medicine technique that uses a small amount of a radioactive tracer, such as fluorodeoxyglucose (FDG), to measure metabolic processes like glucose metabolism and regional cerebral blood flow. Since glucose is the brain's primary energy source, areas of higher uptake indicate greater neuronal activity, thus providing crucial functional information.
Choice D rationale
A Computed Tomography (CT) scan uses X-rays from multiple angles to create cross-sectional images of the body. It provides detailed structural information (e.g., hemorrhage, edema, atrophy) but, similar to MRI, does not offer direct, specific quantification of ongoing, real-time metabolic rate or neurotransmitter release, which are hallmarks of brain function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The Quality and Safety Education for Nurses (QSEN) project explicitly identifies Patient-Centered Care as one of its six core competencies. This competency emphasizes providing compassionate and coordinated care based on respect for client's preferences, values, and needs, a principle that is fundamental to effective mental health treatment and recovery-oriented services.
Choice B rationale
This statement describes the conceptual model of recovery in mental health, which is a guiding principle for treatment, but it is not one of the six specific competencies defined and recognized by the QSEN initiative for nursing education and practice across all health settings.
Choice C rationale
This statement relates to genomics, an emerging field in healthcare, especially in understanding genetic predispositions to mental illness and individualized pharmacogenomic treatment responses. While important, it is not listed as one of the six core QSEN competencies, which focus on broader areas of quality and safety improvement.
Choice D rationale
Healthy development is a key concept in developmental psychology and mental health promotion, emphasizing the establishment of a robust psychological foundation. Though highly relevant to preventative mental healthcare, this is a conceptual focus rather than a distinct, explicit competency named and mandated by the QSEN framework.
Correct Answer is B
Explanation
Choice A rationale
Inadequacy pertains to a lack of sufficiency or quality regarding a statement's content or detail to convey a full idea. While the statement "My marriage is just great. My spouse and I always agree" might lack depth, the primary concern is the disparity between the verbal and non-verbal communication, suggesting internal conflict, rather than mere insufficiency of descriptive detail. The non-verbal cues overshadow content.
Choice B rationale
Inconsistency describes a conflict between different elements of communication, specifically here the spoken word and the observed body language. The client's verbal declaration of perfect agreement contrasts sharply with the continuous, agitated non-verbal behaviors (foot movement, button twirling), indicating underlying anxiety, psychological distress, or internal tension that contradicts the seemingly idyllic verbal message. This non-verbal leakage suggests the statement is not truthful.
Choice C rationale
Clarity refers to the ease of understanding the manifest content of the verbal message. The client's statement about the marriage being "just great" and always agreeing is grammatically clear and easily understood at a literal level. However, the nurse's observation of the non-verbal behavior suggests that the meaning or truthfulness of the statement is compromised by internal conflict.
Choice D rationale
Distortion implies a misrepresentation or alteration of reality, potentially stemming from a cognitive process or defense mechanism. While the client might be distorting the truth of their marriage, the nurse's direct observation reveals an immediate, simultaneous inconsistency between the two forms of communication, making inconsistency the more direct and observable conclusion regarding the communication dynamic itself.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
