3.1. Study Design
In the present study, the prevalence of AI tool usage and future perspectives of radiologists in Turkey on AI in radiology were investigated using a cross-sectional, descriptive survey design. Pre-specified primary outcomes were (1) prior AI use (yes/no) and (2) perceived usefulness and perceived reliability of AI among prior users. Pre-specified primary associations included: The AI knowledge with willingness to integrate AI; AI knowledge with prior AI use; and formal AI training with perceived reliability/usefulness (among users). Secondary analyses explored additional cross-tabulations of demographics with perceptions. All other analyses were considered exploratory.
3.2. Ethical Approval
This study was approved by the Ethics Committee of Izmir City Hospital on December 4, 2024 (decision No.: 2024/233).
3.3. Participants
Participants included practicing radiologists across Turkey, representing a wide range of professional titles: Assistant doctors (residents), specialist doctors, assistant professors, associate professors, and professors. Radiologists were recruited from various healthcare institutions, including university hospitals, state hospitals, private hospitals, and dedicated imaging centers. Eligibility criteria required participants to be currently practicing radiology in Turkey at the time of the survey.
3.4. Survey Development
A structured questionnaire was developed specifically for this study after a review of the literature on AI adoption and perceptions among healthcare professionals. The survey consisted of 36 items across six domains: Demographics, knowledge/training, AI tool use, perceptions, expectations, and legal/ethical views. Skip logic was applied, so certain items (e.g., questions on AI reliability and confidence) were only displayed to respondents who had reported prior AI use.
The questionnaire was composed of multiple sections, assessing:
- Demographic information: Title, workplace, and years of professional experience.
- Knowledge and training: Self-assessment of AI knowledge level (none, basic, intermediate, advanced) and experience with formal AI training programs. Basic knowledge was defined as awareness of general AI concepts; intermediate as familiarity with specific applications in radiology; advanced as the ability to critically appraise or implement AI tools.
- Experience with AI tools: Prior use of AI tools in clinical practice or research, types of features used (e.g., lesion detection, auxiliary interpretation), and encountered integration challenges. The AI tools were defined for respondents as software for lesion detection, automated measurements, image post-processing, prioritization, or workflow triage.
- Perceptions of AI: Views on the usefulness and reliability of AI tools, effect on workload, and confidence in reporting.
- Future expectations: Attitudes towards AI's potential future impact on radiology, willingness to integrate AI into clinical practice, and concerns about AI replacing radiologists.
- Legal and ethical considerations: Views on responsibility for errors caused by AI systems and patient data protection practices.
The full questionnaire is provided in the Appendix in Supplementary File.
3.5. Data Collection
The questionnaire was distributed electronically via professional radiology associations, hospital groups, and social media platforms frequently used by Turkish radiologists:
- Turkish Society of Radiology mailing list.
- Some hospitals’ WhatsApp radiology group chats (not all hospitals).
- Some general radiology group chats on WhatsApp.
This was a convenience sample; we did not attempt to reach all radiologists in Turkey but rather recruited those accessible through national radiology associations, hospital groups, and widely used social media channels. Participation was voluntary, anonymous, and without compensation. Eligibility was restricted to radiologists currently practicing in Turkey at the time of the survey. Respondents were informed about the aim of the study, and consent was implied by voluntary completion of the survey. Invitations were not unique; overlap between distribution channels was possible. Therefore, a precise denominator and formal response rate could not be calculated. The survey was available between the 15th of January 2025 and the 15th of March 2025, with two reminders.
3.6. Variables Measured
Independent variables included participants' demographic characteristics (title, workplace, years of experience) and self-reported level of AI knowledge. Dependent variables included:
- Previous use of AI tools (yes/no).
- Type and features of AI tools used.
- Perceived usefulness and reliability of AI tools.
- Expectations regarding AI’s impact on workload and diagnostic accuracy.
- Concerns about AI-driven job displacement.
- Opinions on legal responsibility for AI-related errors.
3.7. Instrument Development and Validation
The questionnaire was developed after reviewing relevant literature on AI adoption in radiology. Content validity was established through expert review by a panel consisting of two European Board-certified radiologists, one associate professor of radiology, and one researcher with expertise in AI applications. All items were reviewed in two iterative rounds, and feedback was incorporated to refine clarity, wording, and relevance. Content validity was supported by expert panel review; formal Item- and Scale-Level Content Validity indices (I-CVI/S-CVI) were not computed. A cognitive pre-test was not performed due to time constraints.
To minimize respondent burden and maximize completion rates, the survey primarily relied on single-item measures rather than multi-item scales. As a result, Internal Consistency indices (e.g., Cronbach’s alpha) or exploratory factor analysis were not applicable. No separate cognitive pre-test was conducted due to time constraints; however, clarity and comprehensibility were ensured through the expert panel review process.
3.8. Statistical Analysis
Descriptive statistics (frequencies and percentages) were used to summarize the characteristics of the participants and survey responses. Chi-square tests were used to explore associations between key variables, including:
- The AI knowledge level and perceived usefulness of AI tools.
- Years of radiology experience and AI knowledge.
- Perceived reliability of AI tools and perceived usefulness.
For chi-square tests, we report Cramer’s V as an effect size; for ordinal by ordinal associations, we report Goodman-Kruskal’s gamma (γ). Descriptive statistics were presented as counts and percentages. Associations between ordinal variables were examined using Spearman’s rho, and chi-square tests were applied for categorical comparisons. All P-values are reported as two-sided, with values < 0.001 expressed as such. Analyses of perceived reliability and usefulness were restricted to respondents who reported prior AI use; corresponding analytic sample sizes are shown in table titles/footnotes (e.g., “among AI users, n = 93”). All tests were exploratory, and P-values are unadjusted. Statistical analyses were performed using IBM SPSS Statistics for Windows, Version 29.0 (IBM Corp., Armonk, NY, USA).