|Year : 2017 | Volume
| Issue : 3 | Page : 196-197
Medical Physics Unit, IRCH, AIIMS, New Delhi, India
|Date of Web Publication||13-Sep-2017|
Medical Physics Unit, IRCH, AIIMS, New Delhi - 110 029
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Kumar P. News. J Med Phys 2017;42:196-7
| American College of Radiology Computed Tomography Accreditation Program Has Issued Testing Instructions Which Have Been Revised on January 6, 2017|| |
The comprehensive instructions are about clinical tests, phantom tests, and guidelines about American College of Radiology computed tomography (CT) accreditations program. It has link to the comprehensive annual quality assurance form as well. It contains the parameters for the clinical evaluation of the CT images which examine technical factors, anatomic coverage, artifacts, and protocols. For example, the document lists CTDIvol for adult head/neck module to be 75 mGy (reference value) and 80 mGy (pass/fail criteria), adult abdomen 25 mGy (reference value) and 30 mGy (pass/fail criteria), adult cardiac CT ≤50 mGy (prospective gating) and ≤150 mGy (retrospective gating), pediatric head/neck 35 mGy (reference value) and 40 mGy (pass/fail criteria), and pediatric abdomen 15 mGy (reference value) and 20 mGy (pass/fail criteria).
Details may be seen at:
| American Association of Physicists in Medicine Releases Computed Tomography Pediatric Protocols|| |
American Association of Physicists in Medicine (AAPM) has released CT protocols which include routine pediatric chest CT and routine pediatric abdomen and pelvic CT recently on July 21, 2017. These are elaborate documents where the former states the clinical indications to be included in pediatric chest CT scan. It lists the diagnostic tasks for various CT protocols such as detection and characterization of mass, abnormal aeration (or expansion of lungs), abnormal fluid collection, air collection, masses in chest wall, calcification in soft tissue, anomalous anatomy, traumatic changes, and blood clots. It goes on to suggest the method of patient positioning and techniques employed for the scan and also for the management of radiation dose. It lists approximate CTDIvol as well. Moreover, it has an index giving scan specifications for various CT manufacturers and their different CT models.
These protocols maybe accessed at:
| International Society of Radiology Undertakes Virtual Training Program in Radiation and Medical Imaging|| |
International Society of Radiology (www.isradiology.org) has lined up, at present, five free presentations at its website under its virtual education project for training the patients and public in the subject of radiation protection. The presentations are useful for the radiation professionals as well. The first in the series is about the effective communication on radiation safety as we have to convey the risk associated with radiation to the patients and public who are generally either too concerned due to bombardment of scrupulous and unscrupulous news items or blissfully ignorant. Other presentations are related with radiopharmacy, CT scan, and optimization of radiography in children.
| Sharing, Comparing, and Measuring Variability in Radiotherapy Treatment Plans|| |
There is a website which provides radiation treatment plans from high performers. One can get many tips from the best of the lot, to improve his/her own, and study the variation. Help is available for all commercial treatment planning system (TPS). The site hosts the interviews of the best performers and their unique techniques in the form of written as well video format. One has to create a free account and select “Plan Studies.” It is a site where one can get help from other planners to improve the plan and learn the trick of the trade from the best around the world. For details log-in www.proknowsystems.com.
| Use of Image Registration and Fusion Algorithms and Techniques in Radiotherapy|| |
AAPM Radiation Therapy Committee Task Group No. 132 which deals with the quality assurance and quality control of process of image registration and image fusion in radiotherapy has published its report on 23rd May 2017. All treatment planning systems now use images from various modalities and also time series image data along with anatomical image library to identify and delineate tumor as well as normal tissues. This information is updated over treatment period to account for changes in anatomy and dose modification as well. It is important to understand the uncertainty involved in these mathematical formalism and software performance for image registration system due to noise, distortion, and anatomical variation. AAPM commissioned the task group 132 to provide comprehensive solution for rigid and deformable image registration in radiation oncology.
The report is available at http://onlinelibrary.wiley.com/doi/10.1002/mp.12256/full.
| International Radiation Protection Association Guidance on Implementation of Eye Dose Monitoring and Eye Protection of Workers|| |
International Radiation Protection Association (IRPA) constituted a task group to review the implementation of the revised eye dose limits. The task group conducted a survey to review the status of implementation of the new dose limit as well as the best-applied method to monitor radiation dose to the lens of eye and also the methods to optimize the radiation dose to eye lens. The report has also addressed the question of how and when to measure eye lens dose and has offered guidance on the use of the protective gears.
IRPA report which was released in January 2017 may be accessed at http://www.irpa.net/page.asp?id=54729.