HS865 Unit 10 Review and Method Chapter Draft Example

Where the Review Ends, the Method Begins: A Unit 10 Review Chapter Draft Joining Chapters 2 and 3 of a Shielding Study

[Student Name]

Purdue University Global

HS865: Doctoral Project II: Research

Unit 10 Review Chapter Draft

[Instructor Name]

[Date]

Wrenfield Health and all local figures are composite and shown as placeholders; no data have been collected, and the studies cited are real.

Note on Revisions

This draft revises the thematic review and methodology draft in response to committee comments. A short list of changes appears at the end. The theoretical framework now sits at the close of Chapter 2, where the program's template places it, because the framework is chosen in answer to the gap the review identifies.

Chapter 2: Review of the Literature

2.1 Search and selection. Studies were located through PubMed, CINAHL, Scopus and ERIC, a hand search of two radiography journals and a review of guidance documents and state regulations. Practice studies were limited to 2019 onward and studies of dose, placement and anatomy to 2000 onward. Of [614] records, [23] met the inclusion criteria; the full log appears in Appendix A.

2.2 Why the rationale for routine shielding has collapsed. Three lines of evidence converge. Current risk models give the reproductive organs less weight than the models in use when shielding became standard, and modern digital radiography delivers low doses, so the protective benefit of a shield is small (Marsh & Silosky, 2019). Shields frequently land in the wrong place on children (Fawcett & Barter, 2009), and they cannot reliably cover the ovaries of young girls, whose ovaries often sit above the pelvic brim (Fawcett et al., 2012). And a shield that intrudes on the automatic exposure control sensor or hides diagnostic anatomy can raise dose or force a repeat. No included study disputes these points.

2.3 Why the practice outlasted its rationale. Shielding was still part of radiography education shortly before the guidance changed; in an international survey of educators, a majority reported teaching it across examinations and believed students copied what they saw on placement (Shanley & Matthews, 2018). Practice surveys after 2019, including a large European survey of radiographers (Federico et al., 2026), describe continued use. Rates cannot be compared directly, because the surveys asked different people, in different countries, at different times and with different wording.

2.4 Why knowledge does not explain it. Most surveys that measured knowledge found that radiographers who still shield are aware the recommendation has changed. The reasons they give point instead toward patients and parents who expect a shield, colleagues who still use one and room routines that put a shield within reach.

2.5 What de-implementation research predicts. Studies of abandoning low-value practices in other fields suggest that removing a visible routine is harder than adding a new one, because habit, patient expectation and professional identity hold it in place and because nothing fills the space left behind (Prasad & Ioannidis, 2014). Effective de-implementation addresses several levels at once, including the clinician, the patient and the setting (Norton & Chambers, 2020).

The literature establishes that informed radiographers keep shielding; it cannot yet tell a department which influences to target, because no study has examined them with a framework built for the purpose.

2.6 Theoretical framework. The study uses the Theoretical Domains Framework, whose 14 validated domains span knowledge and skills, beliefs, motivation and the social and physical setting (Cane et al., 2012). It was preferred to intention-centered and diffusion-centered theories because shielding is likely habitual and environmentally cued, and stopping a routine differs from adopting an innovation.

2.7 The gap. No study has used a validated framework to measure what keeps American radiographers shielding in the years after the 2019 statement, or explained how they operate in practice.

Chapter 3: Method

3.1 Design. To answer that gap, the study pairs a census survey with semi-structured interviews collected during the same weeks, analyzes each on its own terms and then compares them domain by domain, a convergent mixed methods design (Creswell & Plano Clark, 2018).

3.2 Setting. Wrenfield Health's fourteen radiography sites, a mix of hospital departments, urgent care clinics and freestanding outpatient centers, share a protocol that since [2021] has not required routine gonadal shielding.

3.3 Participants. All [286] registered radiographers who perform projection radiography receive the survey. From those who volunteer through a separate form, [16] to [20] are chosen for interviews to span shielding practice, site type and career stage.

3.4 Instruments. The survey asks how often the respondent shields a child's AP pelvis film, then measures each framework domain with two to four agreement items adapted from a questionnaire tested for discriminant content validity, then records background. Adapted items will be cognitively tested with [six] radiographers outside the network. The interview guide pairs each domain with a prompt, opening with a recent case.

3.5 Procedures. The network's imaging education office sends invitations and reminders, so the researcher never contacts staff directly. Interviews take place in private, are recorded with consent, then transcribed and stripped of identifiers.

3.6 Analysis. Routine and non-routine shielders are compared on each domain with rank-based tests, with false discovery rate control across fourteen comparisons and a follow-up regression. Interviews are coded with the domains as starting codes, a residual code and a second coder. A joint display labels each domain convergent, complementary or discordant.

3.7 Ethics and role. Approval will be sought from the university review board and the network's research office. The researcher coordinates a regional radiography program, so former students are excluded from interviews and all invitations come from the network.

3.8 Integration and reporting. The joint display is the study's central product, and the results chapter will be organized around it, with each domain's quantitative and qualitative findings presented together. The final report will follow a reporting guideline for mixed methods studies so that readers can see how the two strands were combined. A summary for network leaders will translate the discordant and convergent domains into options a department could act on.

3.9 Limitations. Self-report may understate a discouraged practice, since radiographers who know shielding is no longer recommended may report less of it than they do. One network limits transfer, especially to regions with different state rules or training histories. Interview selection rests on the shielding item alone.

List of Changes From Earlier Drafts

The framework moved from a separate section to the end of Chapter 2. The search section was condensed, with the full log moved to an appendix. Two survey items without a research question were removed. The gap sentence now names the United States explicitly, at the committee's request.

References

Cane, J., O'Connor, D., & Michie, S. (2012). Validation of the theoretical domains framework for use in behaviour change and implementation research. Implementation Science, 7, 37. https://doi.org/10.1186/1748-5908-7-37

Creswell, J. W., & Plano Clark, V. L. (2018). Designing and conducting mixed methods research (3rd ed.). SAGE Publications.

Fawcett, S. L., & Barter, S. J. (2009). The use of gonad shielding in paediatric hip and pelvis radiographs. The British Journal of Radiology, 82(977), 363-370. https://doi.org/10.1259/bjr/86609718

Fawcett, S. L., Gomez, A. C., Barter, S. J., Ditchfield, M., & Set, P. (2012). More harm than good? The anatomy of misguided shielding of the ovaries. The British Journal of Radiology, 85(1016), e442-e447. https://doi.org/10.1259/bjr/25742247

Federico, L., Roletto, A., Manzo, L., Canulli, L., Nieri, I., Panci, S., Catania, D., Rainford, L., & Gerasia, R. (2026). Survey on the use of patient contact shielding during radiological practice: The European radiographers' perspective. Radiography, 32(1), 103241. https://doi.org/10.1016/j.radi.2025.103241

Marsh, R. M., & Silosky, M. (2019). Patient shielding in diagnostic imaging: Discontinuing a legacy practice. American Journal of Roentgenology, 212(4), 755-757. https://doi.org/10.2214/AJR.18.20508

Norton, W. E., & Chambers, D. A. (2020). Unpacking the complexities of de-implementing inappropriate health interventions. Implementation Science, 15, 2. https://doi.org/10.1186/s13012-019-0960-9

Prasad, V., & Ioannidis, J. P. A. (2014). Evidence-based de-implementation for contradicted, unproven, and aspiring healthcare practices. Implementation Science, 9, 1. https://doi.org/10.1186/1748-5908-9-1

Shanley, C., & Matthews, K. (2018). A questionnaire study of radiography educator opinions about patient lead shielding during digital projection radiography. Radiography, 24(4), 328-333. https://doi.org/10.1016/j.radi.2018.04.001