News | July 01, 2009

Researchers Lower CTA Dose 44 Percent by Lowering Kilovoltage

July 1, 2009 - Radiologists can effectively lower the patient radiation dose by approximately 44 percent and improve vascular enhancement without deterioration of image quality, while screening for possible pulmonary emboli using pulmonary CT angiography, according to a study Brigham and Women's Hospital and Harvard Medical School, Boston, Mass., published in the June issue of the American Journal of Roentgenology.

Researchers used pulmonary CT angiography to evaluate a total of 400 patients believed to have a pulmonary embolism. Two hundred patients were evaluated using the standard peak kilovoltage setting of 130 or 120 kVp and the other 200 patients were evaluated using a low peak kilovoltage setting of 110 or 100 kVp. Shin Matsuoka, M.D., lead author of the study, and his team found that lowering the peak kilovoltage setting by 20-kVp led to superior vascular enhancement without deterioration of image quality allowing them to effectively reduce the patient radiation dose.

The study shows that lowering the kilovoltage setting may be an effective method of lowering the radiation dose for most patients.

For more information: www.arrs.org

Related Content

Third FDA Clearance Announced for Zebra-Med's AI Solution for Brain Bleed Alerts
Technology | Artificial Intelligence | June 19, 2019
Zebra Medical Vision announced it has received its third U.S. Food and Drug Administration (FDA) 510(k) clearance for...
Canon Medical Receives FDA Clearance for AiCE Reconstruction Technology for CT
Technology | Computed Tomography (CT) | June 18, 2019
Canon Medical Systems USA Inc. has received 510(k) clearance on its new deep convolutional neural network (DCNN) image...
International Working Group Releases New Multiple Myeloma Imaging Guidelines

X-ray images such as the one on the left fail to indicate many cases of advanced bone destruction caused by multiple myeloma, says the author of new guidelines on imaging for patients with myeloma and related disorders. Image courtesy of Roswell Park Comprehensive Cancer Center.

News | Computed Tomography (CT) | June 17, 2019
An International Myeloma Working Group (IMWG) has developed the first set of new recommendations in 10 years for...
Aidoc Earns FDA Approval for AI for C-spine Fractures
Technology | Artificial Intelligence | June 11, 2019
Radiology artificial intelligence (AI) provider Aidoc announced the U.S. Food and Drug Administration (FDA) has cleared...
SCCT Announces 2019 Gold Medal Award Recipients
News | Computed Tomography (CT) | June 05, 2019
The Society of Cardiovascular Computed Tomography (SCCT) will present the 2019 Gold Medal Award to Jonathon Leipsic, M....
Einstein Healthcare Network found that use of automated power injectors reduced CT contrast extravasation rates over a 30-month period.

Einstein Healthcare Network found that use of automated power injectors reduced CT contrast extravasation rates over a 30-month period.

Feature | Computed Tomography (CT) | May 30, 2019 | By Jeff Zagoudis
As of 2015, approximately 79 million computed tomography (CT) scans were performed each year in the U.S.
Sponsored Content | Webinar | Computed Tomography (CT) | May 30, 2019
This webinar will explain technical considerations when performing cardiac CT angiography in pediatric patients.
Sponsored Content | Webinar | Computed Tomography (CT) | May 30, 2019
Chest pain is one of the most frequent reasons for an evaluation in the emergency room.There are multiple imaging mod
Vast Majority of Heavy Smokers Not Screened for Lung Cancer
News | Lung Cancer | May 29, 2019
Out of more than 7 million current and former heavy smokers, only 1.9 percent were screened for lung cancer in 2016...
Henry Ford Hospital's ViewRay MRIdian linear accelerator system allows real-time MRI-guided radiotherapy. Shown is the support staff for this system. In the center of the photo is Benjamin Movsas, M.D., chair of radiation oncology at Henry Ford Cancer Institute. Second from the right is Carrie Glide-Hurst, Ph.D., director of translational research, radiation oncology.

Henry Ford Hospital's ViewRay MRIdian linear accelerator system allows real-time MRI-guided radiotherapy. Shown is the support staff for this system. In the center of the photo is Benjamin Movsas, M.D., chair of radiation oncology at Henry Ford Cancer Institute. Second from the right is Carri Glide-Hurst, Ph.D., director of translational research, radiation oncology.

Feature | Henry Ford Hospital | May 21, 2019 | Dave Fornell, Editor
Henry Ford Hospital thought leaders regularly speak at the radiation oncology and radiology conferences about new res