| Question 1: What imaging modalities are available to guide interventional procedures? |
| Reference: | Reference: Curr Probl Diagn Radiol. 2017 May - Jun;46(3):225-233. doi: 10.1067/j.cpradiol.2016.11.002. |
| Choice A: | A. Fluoroscopy |
| Choice B: | B. Ultrasound |
| Choice C: | C. Computed tomography |
| Choice D: | D. All of the above |
| Question 2: What is a strong reason to use computed tomography rather than fluoroscopy or ultrasound for a procedure? |
| Reference: | Reference: AJR. 2001;176: 808-810. 10.2214/ajr.176.3.1760808 |
| Choice A: | A. Procedure requires continuous image guidance |
| Choice B: | B. Procedure involves manipulation of a wire or catheter |
| Choice C: | C. Procedure requires visualization of a large part of the body |
| Choice D: | D. Procedure requires visualization of anatomic details and small structures |
| Question 3: Optimal image guidance during interventional radiology procedures |
| Reference: | Radiol Med. 2015 Apr; 120(4): 406. doi: 10.1007/s11547-014-0450-8 |
| Choice A: | A. Increases technical success |
| Choice B: | B. Maximizes patient safety |
| Choice C: | C. Minimizes procedure time and radiation dose |
| Choice D: | D. All of the above |
| Question 4: Baseline image quality is typically lower for CT-guided procedures than for diagnostic CT because: |
| Reference: | Jones AK, Dixon RG, Collins JD, Walser EM, Nikolic B. Best practices guidelines for CT-guided interventional procedures. J Vasc Interv Radiol 29:518-519 (2018). |
| Choice A: | A. The procedures are invasive and the target can be visualized directly |
| Choice B: | B. A safety margin will be included, therefore precise identification of the target is unnecessary |
| Choice C: | C. CT scanners used for CT-guided procedures are often old and incapable of producing enough radiation to provide high quality images |
| Choice D: | D. The target and its relationship to anatomic landmarks has been identified on prior imaging |
| Question 5: The pre-procedural planning scan (PPS) should contribute no more than __________ to the total procedural dose-length product (DLP) for a CT-guided procedure. |
| Reference: | Tam AL et al. Standardizing CT-guided biopsy procedures: Patient dose and image noise. Am J Roentgenol 205:W390-W399 (2015). |
| Choice A: | A. 10% |
| Choice B: | B. 25% |
| Choice C: | C. 50% |
| Choice D: | D. 75% |
| Choice E: | E. 90% |
| Question 6: Which of the following is correct regarding radiation dose in CT-guided interventional procedures? |
| Reference: | 1). Yang K, Ganguli S, DeLorenzo MC, Zheng H, Li X and Liu B. Procedure-specific CT Dose and Utilization Factors for CT-guided Interventional Procedures. Radiology. 2018;289:150-157.
2). Leng S, Atwell TD, Yu L, Mandrekar J, Lewis BD, Woodrum DA and McCollough CH. Radiation Dose Reduction for CT-Guided Renal Tumor Cryoablation. American Journal of Roentgenology. 2011;196:W586-W591. |
| Choice A: | A. It is very different as that of diagnostic CT |
| Choice B: | B. High variation in radiation dose exists for CT-guided interventional procedures |
| Choice C: | C. The number of scans needed for each procedure play has an important impact on total radiation dose used in CT-guided interventional procedures |
| Choice D: | D. All of above |
| Question 7: Cryoablation tends to have higher effective dose than biopsy because more helical scans with longer scanning range are used. (True of False) |
| Reference: | Leng S, Atwell TD, Yu L, Mandrekar J, Lewis BD, Woodrum DA and McCollough CH. Radiation Dose Reduction for CT-Guided Renal Tumor Cryoablation. American Journal of Roentgenology. 2011;196:W586-W591. |
| Choice A: | True |
| Choice B: | False |
| Question 8: Which of the following is NOT an effective dose reduction technique for CT guided interventional procedures? |
| Reference: | 1) Yu L, Liu X, Leng S, et al. Radiation dose reduction in computed tomography: techniques and future perspective. Imaging Med. 2009;1(1):65-5-84. doi:10.2217/iim.09.5
2) Jones AK, Dixon RG, Collins JD, Walser EM and Nikolic B. Best Practice Guidelines fo |
| Choice A: | A. Use automatic exposure control if available |
| Choice B: | B. Limit scan range to only area of interest along the z direction |
| Choice C: | C. Reduce frequency of monitoring scans during cryoablation |
| Choice D: | D. Use fully model-based iterative reconstruction algorithm that takes 10 minutes for a data set |
| Question 9: Which of the following is correct regarding to procedure complexity and imaging utilization in CTGI? |
| Reference: | 1). Yang K, Ganguli S, DeLorenzo MC, Zheng H, Li X and Liu B. Procedure-specific CT Dose and Utilization Factors for CT-guided Interventional Procedures. Radiology. 2018;289:150-157.
2). Leng S, Atwell TD, Yu L, Mandrekar J, Lewis BD, Woodrum DA and McCollough CH. Radiation Dose Reduction for CT-Guided Renal Tumor Cryoablation. American Journal of Roentgenology. 2011;196:W586-W591. |
| Choice A: | A. Procedure specific, just as FGI (fluoroscopy-guided interventional) procedures. |
| Choice B: | B. Patient specific, depending on the clinical situations. |
| Choice C: | C. Operator specific, depending on experience and institution’s practice. |
| Choice D: | D. All of the above. |
| Question 10: Based on the available data presented in this session, which of the following has the correct order of procedure complexity for CTGI procedures? |
| Reference: | Yang K, Ganguli S, DeLorenzo MC, Zheng H, Li X and Liu B. Procedure-specific CT Dose and Utilization Factors for CT-guided Interventional Procedures. Radiology. 2018;289:150-157. |
| Choice A: | A. Ablation < Biopsy < Drainage |
| Choice B: | B. Biopsy < Drainage < Ablation. |
| Choice C: | C. Drainage < Ablation < Biopsy. |
| Choice D: | D. Biopsy < Ablation < Drainage. |
