JMRS ASMIRT CPD Q&A - Radiation Therapy

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JMRS ASMIRT CPD Q&A - Radiation Therapy - March 2022

Maximise your CPD by reading the following selected Radiation Therapy article and answer the five questions.

Continuing Professional Development Q&A - Radiation Therapy

Assessing the impact of magnetic resonance treatment simulation (MRSIM) on target volume delineation and dose to organs at risk for oropharyngeal radiotherapy

Richardson H, Kumar M, Tieu MT, Parker J, Dowling JA, Arm J, Best L, Greer PB, Clapham M, Oldmeadow C, O’Connor L, Wratten C. (2022)
J Med Radiat Sci. (2022)

https://doi.org/10.1002/jmrs.552

1. What is the field strength of the MRI used in this study? *

1 point

a. 0.5 Tesla

b. 1.5 Tesla

c. 3 Tesla

d. 7 Tesla

2. What is the major advantage of a planning MRI (pMRI) compared to a diagnostic MRI (dMRI)? *

1 point

a. The pMRI was well tolerated by patients

b. The pMRI scan was quicker in duration

c. The pMRI provided more accurate target/organ delineation

d. There was no advantage of a pMRI

3. How many patients had their contours modified because of this study? *

1 point

a. 10

b. 19

c. 21

d. 26

4. What was the main reason for modifying a contour on the pMRI? *

1 point

a. Volume more clearly defined for outlining on pMRI

b. Structure incorrectly outlined previously on CT alone

c. Too many artefacts present on the dMRI to visualise the regions of interest

d. Tumour had grown rapidly between the dMRI and pMRI scans

5. Which contour was edited the most in this study? *

1 point

a. PTV63

b. PTV70

c. GTVn

d. GTVp

Recommended further reading:

1. Wong KH, Panek R, Bhide SA, Nutting CM, Harrington KJ, Newbold KL. The emerging potential of magnetic resonance imaging in personalizing radiotherapy for head and neck cancer: an oncologist's perspective. Br J Radiol. 2017 Mar; 90(1071):20160768.

2. Hanvey S, McJury M, Tho LM, Glegg M, Thomson M, Grose D, et al. The influence of MRI scan position on patients with oropharyngeal cancer undergoing radical radiotherapy. Radiat Oncol. 2013 May; 8: 129.

This content was created in conjunction with the Australian Society of Medical Imaging and Radiation Therapy (ASMIRT) CPD Program.

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