American College of Radiology (ACR) and American Society for Radiation Oncology (ASTRO) Practice Guideline for the Performance of Stereotactic Radiosurgery (SRS)

Seung, Steven K.; Larson, David A.; Galvin, James M.; Mehta, Minesh P.; Potters, Louis; Schultz, Christopher J.; Yajnik, Santosh; Hartford, Alan C.; Rosenthal, Seth A.

doi:10.1097/coc.0b013e31826e053d

Cited by 92 publications

(62 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Radiation delivery of small beams using multiple noncoplanar arcs or beams projected on the target regions results in a highly conformal dose distribution around the targets while minimizing dose to the normal brain tissue 4 , 5 . Submillimeter accuracy can be achieved, and a maximum error of 1 mm is commonly considered as an acceptable accuracy in terms of the target localization 6 , 7 …”

Section: Introductionmentioning

confidence: 99%

Dosimetric comparison between cone/Iris‐based and InCise MLC‐based CyberKnife plans for single and multiple brain metastases

Jang

Lalonde

Ozhasoglu

et al. 2016

J Applied Clin Med Phys

View full text Add to dashboard Cite

We performed an evaluation of the CyberKnife InCise MLC by comparing plan qualities for single and multiple brain lesions generated using the first version of InCise MLC, fixed cone, and Iris collimators. We also investigated differences in delivery efficiency among the three collimators. Twenty‐four patients with single or multiple brain mets treated previously in our clinic on a CyberKnife M6 using cone/Iris collimators were selected for this study. Treatment plans were generated for all lesions using the InCise MLC. Number of monitor units, delivery time, target coverage, conformity index, and dose falloff were compared between MLC‐ and clinical cone/Iris‐based plans. Statistical analysis was performed using the nonparametric Wilcoxon‐Mann‐Whitney signed‐rank test. The planning accuracy of the MLC‐based plans was validated using chamber and film measurements. The InCise MLC‐based plans achieved mean dose and target coverage comparable to the cone/Iris‐based plans. Although the conformity indices of the MLC‐based plans were slightly higher than those of the cone/Iris‐based plans, beam delivery time for the MLC‐based plans was shorter by 30%∼40%. For smaller targets or cases with OARs located close to or abutting target volumes, MLC‐based plans provided inferior dose conformity compared to cone/Iris‐based plans. The QA results of MLC‐based plans were within 5% absolute dose difference with over 90% gamma passing rate using 2%/2 mm gamma criteria. The first version of InCise MLC could be a useful delivery modality, especially for clinical situations for which delivery time is a limiting factor or for multitarget cases.PACS number(s): 87.53.Ly, 87.55.D‐

show abstract

Section: Introductionmentioning

confidence: 99%

Dosimetric comparison between cone/Iris‐based and InCise MLC‐based CyberKnife plans for single and multiple brain metastases

Jang

Lalonde

Ozhasoglu

et al. 2016

J Applied Clin Med Phys

View full text Add to dashboard Cite

show abstract

“…16,17 First step of stereotactic treatment is the "simulation phase". During this phase, the patient is immobilized with a personalized device to maximize reproducibility and accuracy of treatment.…”

Section: Stereotactic Body Radiation Therapy (Sbrt) For Liver Metastamentioning

confidence: 99%

The role of SBRT in oligometastatic patients with liver metastases from breast cancer

Scorsetti

Franceschini

Rose

et al. 2017

Reports of Practical Oncology & Radiotherapy

View full text Add to dashboard Cite

Liver Metastases SBRT Radiotherapy a b s t r a c tLiver metastases from breast cancer are a common occurrence. Local ablative therapies are a promising therapeutic option for these patients, with the potential for a long term disease control in the setting of "oligometastatic patients". Identification of the perfect candidate for local approaches is still challenging and unclear. Stereotactic body radiation therapy (SBRT) is one of the most valuable local therapy, because of great efficiency, low morbidity and minimal invasiveness. In this paper, we reviewed the state of the art in the care of breast cancer patients with liver metastases, with a focus on SBRT.© 2016 Greater Poland Cancer Centre. Published by Elsevier Sp. z o.o. All rights reserved. 1.State of the art E-mail address: marta.scorsetti@humanitas.it (M. Scorsetti).Firstly in 1995, Hellman and Weichselbaum 1 described the state, called oligometastatic disease, characterized by an indolent tumor biology and behavior in which metastases are limited in number and site. In this subgroup of selected patients, the emerging data is that local therapy could have a potential curative role and an impact on survival rate.The population with oligometastatic BC (OM BC) is estimated to be 1-10% of newly diagnosed patients with metastatic BC 2 and is well represented in the subgroup of http://dx

show abstract

“…For example, according to Report 54, all machine axes should coincide within a 1 mm radius sphere for all possible gantry, collimator and couch angles (1). More recent practice guidelines such as AAPM TG-142 and ACR guidelines have updated some tests, such as those related to cone-beam CT image guidance and frameless radiosurgery (2). Additionally, Canadian guidelines from the Canadian…”

Section: Introductionmentioning

confidence: 99%

Quality Assurance Results for a Commercial Radiosurgery System

Ruschin

Lightstone

Beachey

et al. 2014

Technol Cancer Res Treat

View full text Add to dashboard Cite

The purpose of this communication is to inform the radiosurgery community of quality assurance (QA) results requiring attention in a commercial FDA-approved linac-based cone stereotactic radiosurgery (SRS) system. Standard published QA guidelines as per the American Association of Physics in Medicine (AAPM) were followed during the SRS system's commissioning process including end-to-end testing, cone concentricity testing, image transfer verification, and documentation. Several software and hardware deficiencies that were deemed risky were uncovered during the process and QA processes were put in place to mitigate these risks during clinical practice. In particular, the present work focuses on daily cone concentricity testing and commissioning-related findings associated with the software.Cone concentricity/alignment is measured daily using both optical light field inspection, as well as quantitative radiation field tests with the electronic portal imager. In 10 out of 36 clinical treatments, adjustments to the cone position had to be made to align the cone with the collimator axis to less than 0.5 mm and on two occasions the pre-adjustment measured offset was 1.0 mm. Software-related errors discovered during commissioning included incorrect transfer of the isocentre in DICOM coordinates, improper handling of non-axial image sets, and complex handling of beam data, especially for multi-target treatments. QA processes were established to mitigate the occurrence of the software errors. With proper QA processes, the reported SRS system complies with tolerances set out in established guidelines.Discussions with the vendor are ongoing to address some of the hardware issues related to cone alignment.

show abstract

American College of Radiology (ACR) and American Society for Radiation Oncology (ASTRO) Practice Guideline for the Performance of Stereotactic Radiosurgery (SRS)

Cited by 92 publications

References 36 publications

Dosimetric comparison between cone/Iris‐based and InCise MLC‐based CyberKnife plans for single and multiple brain metastases

Dosimetric comparison between cone/Iris‐based and InCise MLC‐based CyberKnife plans for single and multiple brain metastases

The role of SBRT in oligometastatic patients with liver metastases from breast cancer

Quality Assurance Results for a Commercial Radiosurgery System

Contact Info

Product

Resources

About