2020
DOI: 10.1002/mp.14565
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The development and testing of a novel spherical radiotherapy phantom system for the commissioning and patient‐specific quality assurance of mono‐isocentric multiple mets SRS plans

Abstract: Purpose To develop a single radiotherapy phantom system capable of performing both patient‐specific quality assurance (QA) measurements and commissioning measurements for mono‐isocentric LinAc‐based stereotactic radiosurgery (“mLSRS”) treatment plans. Methods DesignA 20‐cm diameter spherical phantom was designed which contained within it a film cartridge. The surface of the sphere was machined to display a set of angular markings at both the equator and the meridian representing a spherical coordinate system. … Show more

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Cited by 8 publications
(6 citation statements)
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“…Some specific developments and applications for E2E QA to evaluate specific clinical treatment protocols are referenced in Table 1 below (which presents a list of vendors that supply various commercial tools and services to aid in-house E2E testing) and in the most recent IC3Ddose proceedings from the virtual meeting in 2021 [99][100][101][102][103]. These and other [21,53,96,[104][105][106][107][108][109][110][111][112] clinical reports span a range of investigations into the feasibility of RT E2E testing, nonetheless they do make some common observations. The papers indicate that clinically relevant E2E QA can be performed with a wide range of phantom designs that may contain various point, 2D or 3D dosimetry systems (see discussion below).…”
Section: Lessons Learned From Past Radiation Therapy E2e Testingmentioning
confidence: 99%
“…Some specific developments and applications for E2E QA to evaluate specific clinical treatment protocols are referenced in Table 1 below (which presents a list of vendors that supply various commercial tools and services to aid in-house E2E testing) and in the most recent IC3Ddose proceedings from the virtual meeting in 2021 [99][100][101][102][103]. These and other [21,53,96,[104][105][106][107][108][109][110][111][112] clinical reports span a range of investigations into the feasibility of RT E2E testing, nonetheless they do make some common observations. The papers indicate that clinically relevant E2E QA can be performed with a wide range of phantom designs that may contain various point, 2D or 3D dosimetry systems (see discussion below).…”
Section: Lessons Learned From Past Radiation Therapy E2e Testingmentioning
confidence: 99%
“…At present, there are commercial and in-house phantoms for this purpose, and the medical physics community has started to quantify the accuracy of off-axis targets. 22,23 Nonetheless, this proposal incorporates anatomical information that is more related to the MBM SRS treatments, and we follow a validated method to calculate the 3D displacements. In contrast to the phantoms of preliminary studies that have regular geometric shapes, this phantom simulates the skull of a real patient that was previously treated.…”
Section: Introductionmentioning
confidence: 99%
“…Popular measurement-based methods for PSQA of lung SBRT plans include film, [7][8][9] multi-dimensional diode arrays, [10][11][12] high-resolution diode arrays, 10,13,14 and electronic portal imaging device (EPID) based QA. 12,[15][16][17][18] Due to the use of small field segments and steep dose gradients that are associated with lung SBRT plans, previous studies have demonstrated the need to use high resolution measurement methods to be able to detect potential errors through the use of stricter gamma criteria.…”
Section: Introductionmentioning
confidence: 99%
“…Techniques presented in the literature have proposed measuring a single lesion, 10 measuring the largest and the smallest lesion, 23 or trying to measure at least three lesions on a single plane. 8 Given the efficiency challenges associated with these techniques, there is motivation to develop a more efficient alternative method.…”
Section: Introductionmentioning
confidence: 99%
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