Tami Freeman

Radiation Oncology/Therapy
Experts discuss proton therapy's potential for breast cancer
Proton therapy is currently used to treat brain, spine, and prostate cancers, as well as many pediatric tumors. Earlier this month, experts from some of the leading U.S. cancer centers gathered to discuss the emerging role of proton therapy in breast cancer.
February 26, 2013
2013 02 26 14 58 24 810 Procure Gantry 250 20130226220725
MRI
Hybrid linac-MRI tracks motion during radiotherapy
Real-time tumor tracking could prove invaluable for radiotherapy of moving targets such as lung tumors. Using MRI for such tracking provides position verification without ionizing radiation. Researchers recently discussed the latest results of a prototype hybrid linac-MRI system being developed at the Cross Cancer Institute in Canada.
October 7, 2012
2012 10 05 15 26 43 564 2012 10 08 Linac Mri Thumb
Radiation Oncology/Therapy
Exploiting log files for optimal radiotherapy QA
Quality assurance (QA) of intensity-modulated radiation therapy (IMRT) is a vital component in the radiotherapy process, but current QA procedures are far from optimal. Log files produced by radiotherapy systems can be exploited to vastly improve IMRT quality assurance.
September 17, 2012
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Radiation Oncology/Therapy
Imaging advances therapy assessment
Monitoring and understanding a patient's response to therapy plays a central role in optimizing cancer treatment. Advanced imaging technologies could enable monitoring of tumor response at an earlier stage in the treatment course, providing a means for personalized therapy adaptation.
September 2, 2012
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Radiation Oncology/Therapy
New takes on image guidance for radiation therapy
Kilovoltage and megavoltage conebeam CT are predominantly used for real-time imaging during radiation therapy, with systems based on ultrasound or MRI now also being developed. But there are other imaging modalities that could be used, including those that offer functional and molecular information regarding the tumor being treated.
August 23, 2012
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Radiation Oncology/Therapy
Adding ultrasound boosts radiotherapy for prostate cancer
Combining pulsed nonthermal focused ultrasound with radiotherapy could increase the efficacy of prostate cancer treatment, according to a presentation at the American Association of Physicists in Medicine annual meeting held in Charlotte, NC, earlier this month.
August 16, 2012
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Radiation Oncology/Therapy
MRI visualizes proton dose distribution
MRI visualizes the dose distribution with proton therapy procedures by imaging radiation-induced tissue changes, reducing the uncertainty of the range of the proton beam, according to a presentation at the recent European Society for Radiotherapy and Oncology annual meeting.
May 29, 2012
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Nuclear Medicine
Brain PET enhances radiation therapy planning
A brain PET scanner based on semiconductor detectors can provide more accurate tumor delineation than a conventional whole-body PET system, according to researchers from Japan, who found that the newly developed system had twice the spatial resolution of conventional PET systems.
March 14, 2012
2012 03 14 14 41 43 985 Nasophar Thumb
Radiation Oncology/Therapy
Couch attenuation undermines radiotherapy plan quality
Treatment couches used to support a patient during intensity-modulated radiotherapy and arc therapy can unknowingly lead to an unacceptable reduction in dose to target structures. Rail placement can also affect the dose delivered.
January 15, 2012
2012 01 13 14 40 35 696 Couch Attenuation Thumb
Radiation Oncology/Therapy
Ultrasound tackles radiation therapy guidance
Ultrasound imaging offers the potential of marker-free, soft-tissue visualization during radiation therapy delivery, providing real-time tracking of target organ location without delivering any extra radiation dose to healthy tissue.
October 2, 2011
2011 09 30 13 46 07 452 Us Schlosser2 Thumb
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Ultrasound
Most veterans adhere to post-EVAR surveillance imaging
Adherence to surveillance imaging after endovascular abdominal aortic aneurysm repair (EVAR) is high among veterans.
Copd
CT
Quantitative CT textures of the lung help assess COPD severity
Data Protection Nijat
AI
Health data restrictions plague medtech AI developers
Breast Screening Mammo
Womens Imaging
ACS: Breast cancer screening rates have recovered post-COVID
Images show lung ultrasound findings of major pleuro-pulmonary pathologies. (a) Pleural effusion; (b) Pneumonia; (c) Bronchopneumonia; (d) Acute pulmonary edema; (e) Chronic obstructive pulmonary disease exacerbation; (f) Pleuropulmonary tumors; (g) Acute respiratory distress syndrome.
Ultrasound
Lung POCUS helps diagnose dyspnea in emergency departments
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Most veterans adhere to post-EVAR surveillance imaging
By Amerigo Allegretto
Adherence to surveillance imaging after endovascular abdominal aortic aneurysm repair (EVAR) is high among veterans.
April 24, 2025
Heart Valves 3 D Base Thumbnail
Quantitative CT textures of the lung help assess COPD severity
By Kate Madden Yee
Quantitative CT can capture lung inflammation patterns to assess the severity of chronic obstructive pulmonary disease (COPD).
April 23, 2025
Copd
Health data restrictions plague medtech AI developers
By Liz Carey
Medtech industry and health leaders from big tech have introduced a new AI Policy Roadmap.
April 23, 2025
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ACS: Breast cancer screening rates have recovered post-COVID
By Kate Madden Yee
Rates of up-to-date breast cancer screening have recovered after declining during the COVID-19 pandemic.
April 23, 2025
Breast Screening Mammo
Lung POCUS helps diagnose dyspnea in emergency departments
By Amerigo Allegretto
Point-of-care lung ultrasound may be useful in the emergency department for diagnosing dyspnea.
April 23, 2025
Images show lung ultrasound findings of major pleuro-pulmonary pathologies. (a) Pleural effusion; (b) Pneumonia; (c) Bronchopneumonia; (d) Acute pulmonary edema; (e) Chronic obstructive pulmonary disease exacerbation; (f) Pleuropulmonary tumors; (g) Acute respiratory distress syndrome.
MRI tool segments over 60 abdominal organs, structures
By Amerigo Allegretto
An automated multiorgan tool can accurately segment T1-weighted abdominal MR images.
April 22, 2025
2025 04 22 Radiology Mrisegmenter Thumbnail
AI produces synthetic 3T MR images from portable scans
By Erik L. Ridley
Findings show that AI could potentially expand the utility of neuroimaging on portable MRI systems.
April 22, 2025
Figure: Improved image quality with a generative adversarial network architecture for low- to high-field-strength image translation, called LowGAN. (A–C) Top: High-field-strength (3-T) and low-field-strength (64-mT) images and LowGAN outputs for a single participant across (A) fluid-attenuated inversion recovery (FLAIR), (B) T1-weighted (T1w), and (C) T2-weighted (T2w) contrasts. Bottom: Graphs demonstrate the structural similarity index (SSIM), peak signal-to-noise ratio (PSNR), normalized cross-correlation (NCC), and feature similarity index (FSIM) between high field strength and low field strength (64-mT) and high field strength and LowGAN outputs. a.u. = arbitrary units.****p ≤ 0.0001. Images and caption courtesy of Radiology and the RSNA.
Machine learning standardizes bone tumor grading on MRI, CT
By Kate Madden Yee
An AI algorithm and an updated risk stratification system produce accurate and standardized bone lesion assessment on CT and MRI.
April 22, 2025
2025 04 22 Radiology Lemore Figure2 Thumbnail
Accelerated MRI protocols reduce environmental impact
By Will Morton
Accelerating MRI protocols can cut greenhouse gas emissions, energy use, and costs, while also improving patient access and revenue.
April 22, 2025
Environment
Ultrasound-based model finds endometrial malignancies
By Amerigo Allegretto
Clinical and ultrasound features improve diagnostic accuracy for detecting endometrial malignancy.
April 22, 2025
Ultrasound Gynecologist
Ukrainian refugees at higher risk of advanced breast cancers
By Amerigo Allegretto
Ukrainian refugee women have double the odds of having advanced-stage breast cancer compared with Polish citizens.
April 22, 2025
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Right-to-repair battle heats up in North Carolina
By Liz Carey
North Carolina legislation, if passed, will require original equipment manufacturers to support medical equipment repair providers.
April 21, 2025
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