Survey of image‐guided radiotherapy use in Australia

Batumalai, Vikneswary; Holloway, Lois; Kumar, Shivani; Dundas, Kylie; Jameson, Michael; Vinod, Shalini; Delaney, Geoff P.

doi:10.1111/1754-9485.12556

Cited by 29 publications

(45 citation statements)

References 31 publications

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“…3 Several surveys have shown an increased adoption of IGRT technologies across many countries. 7,[9][10][11] However, little is known about IGRT practices in New Zealand (NZ), as there has been no collection of such data carried out. Therefore, we conducted a survey to evaluate the current use and application of IGRT in New Zealand.…”

Section: Introductionmentioning

confidence: 99%

National survey on image‐guided radiotherapy practice in New Zealand

et al. 2017

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Section: Introductionmentioning

confidence: 99%

National survey on image‐guided radiotherapy practice in New Zealand

et al. 2017

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“…Once radiotherapy is suggested based on the diagnosis and is discussed with the patient, the necessary data for the treatment planning, such as medical image datasets of different modalities (Batumalai et al 2016), are acquired. Those images may consist of Computed Tomography (CT) images, various sequences of Magnetic Resonance Imaging (MRI) images, and/or Positron Emission Tomography (PET) images, depending on the type of the tumor (Batumalai et al 2016). All acquired medical image datasets are then co-registered, i.e., aligned to the same coordinate space for inclusion in the planning process (Weersink 2016).…”

Section: Contouring In Radiotherapy Planningmentioning

confidence: 99%

The influence of automation on tumor contouring

et al. 2017

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Fully or semi-automatic contouring tools are increasingly being used in the tumor contouring task for radiotherapy. While the fully automatic contouring tools have not reached sufficient efficiency, the semi-automatic contouring tools balance more effectively between the human interaction and automation. This study evaluates the influences of a semi-automation contouring tool, called between-slice interpolation, on the resulting contours and the contouring process. The tumor contouring study was conducted on three patient cases with five physicians in a naturalistic setting. The contouring task consisted of initiating the 2D contour manually or with the interpolation tool and correcting that initial contour. The similarity of the resulting contours was pairwise measured within the manual or the interpolated category. Interactions with the software were recorded, and variations in the contouring workflows steps were compared. Results indicated that using the between-slice interpolation tool for creating the initial contour, instead of initiating it manually, influenced both the contouring process and outcomes. First, it was identified that contours initiated by the interpolation tool showed an increased similarity among themselves compared to the manually initiated contours. At the same time, influences to the resulting contours were below clinical relevance, and toward the desired direction-improved consistency of contours. Second, when interpolation was used, in two cases out of three, the average contouring time also decreased significantly. Therefore, the use of such an automation tool can be encouraged.

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“…Cone‐beam computed tomography (CBCT) is one option for image verification, with implementation undergoing a surge in Australia and New Zealand. Recent 2015–2016 surveys show that CBCT was available in 97% of Australian departments and in 86% of New Zealand departments compared with 8% of departments in this region having CBCT just a decade ago . Despite being available in almost all departments, CBCT has not replaced other image verification modalities, with kilovoltage (kV) planar imaging being the second most common imaging tool used in IGRT …”

Section: Introductionmentioning

confidence: 99%

“…4 Despite being available in almost all departments, CBCT has not replaced other image verification modalities, with kilovoltage (kV) planar imaging being the second most common imaging tool used in IGRT. 2 Since obesity prevalence in Australia is on the rise, 5 establishing image verification protocols for large patients is becoming an important issue. Several image verification guidelines and reports have been published nationally and internationally.…”

Section: Introductionmentioning

confidence: 99%

Effect of patient size on image quality in radiotherapy kV planar verification imaging: a phantom study

Chan

Giles

Newmarch

et al. 2019

J of Medical Radiation Sci

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Introduction This study aimed to determine a maximal pelvic separation and waist circumference in pelvic patients to guide radiation therapists in acquiring kilovoltage (kV) planar images of acceptable quality for treatment verification. Methods A pelvic anthropomorphic phantom modified with different bolus thicknesses was imaged at various default kV exposure settings. Radiation therapists rated image quality and acceptance/rejection of these images for treatment verification. Results Sixteen radiation therapists participated in the study. Image quality was inversely proportional to phantom size. AP and lateral kV images were acceptable for treatment verification up to a waist circumference of 143 cm. Conclusions Exposure settings for kV image verification of large patients should be individualised to avoid unnecessary patient radiation dose through repeated imaging.

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Survey of image‐guided radiotherapy use in Australia

Abstract: IGRT is widely used among Australian RT centres. On the basis of future plans of respondents, the installation of new imaging modalities is expected to increase for both planning and treatment.

Cited by 29 publications

References 31 publications

National survey on image‐guided radiotherapy practice in New Zealand

National survey on image‐guided radiotherapy practice in New Zealand

The influence of automation on tumor contouring

Effect of patient size on image quality in radiotherapy kV planar verification imaging: a phantom study

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