Cynthia E. Keen

Radiation Oncology/Therapy
Relaxing rigid timing of linac safety tests may offer benefits
Emergency turnoff switches for radiation therapy equipment need to be tested regularly to maintain high quality standards. But a presentation made today at the American Association of Physicists in Medicine meeting suggests that some state regulations aren't necessarily based on safety facts.
July 21, 2010
CT
X-ray tube modulation helps reduce pediatric CT dose
By modulating x-ray tube output based on patient characteristics, instead of using a fixed tube current, Texas researchers were able to lower radiation dose in pediatric CT studies by 23%, according to a poster presentation at this week's American Association of Physicists in Medicine meeting.
July 20, 2010
Radiation Oncology/Therapy
SAVI breast brachytherapy produces good 2-year outcomes
The treatment and outcomes of more than 100 breast cancer patients who received radiotherapy treatments delivered by a multichannel single-entry brachytherapy device have been so positive that radiation oncologists are suggesting that its use be expanded.
July 15, 2010
Radiation Oncology/Therapy
Database identifies radiation therapy toxicities in kids
Since 2004, radiation oncologists in Germany have been submitting information about pediatric radiotherapy treatments to a study trial center database. Now an analysis of acute toxicities from this database of more than 1,000 patients has been recently published in Radiotherapy & Oncology, providing an overview of the pattern of acute toxicities of irradiated organs.
July 14, 2010
Radiation Oncology/Therapy
IORT shows promise as pancreatic cancer treatment
Intraoperative radiation therapy (IORT) combined with chemotherapy appears to be a promising treatment for patients who have undergone surgical resection of pancreatic cancer, according to a report published in the International Journal of Radiation Oncology, Biology, Physics.
July 12, 2010
Radiation Oncology/Therapy
HIFU for liver, pancreatic cancer has high complication rate
While effective, high-intensity focused ultrasound (HIFU) treatment of solid cancerous tumors comes with risk for both major and minor complications, according to research from the Catholic University of Korea in Seoul.
July 11, 2010
Radiation Oncology/Therapy
Active surveillance advised for elderly kidney cancer patients
The best treatment for patients older than 75 who are diagnosed with localized renal cell carcinoma may be active surveillance, according to urologists at the Cleveland Clinic, whose recommendations were reported in the July 1 issue of Cancer.
July 8, 2010
Ultrasound
Point-of-care ultrasound useful for fracture diagnosis
Clinicians trained to use portable, point-of-care ultrasound equipment can achieve a high level of accuracy in identifying fractures in children and young adults when x-ray units are not available, according to a study published online in Injury.
July 6, 2010
MRI
Sedation costs add up for pediatric MRI studies
The costs of sedating or anesthetizing children for MRI exams can add up quickly. One Canadian hospital analyzed what it was spending on sedation and subsequently changed its workflow to improve efficiency, according to an article in the July issue of Radiology.
July 1, 2010
Radiation Oncology/Therapy
TARGIT-A data show intraoperative RT equals whole-breast radiation
Imagine the effects on quality of life and cost savings if some early-stage breast cancer patients didn't need follow-up radiation therapy (RT) treatments after breast conservation surgery. Results being reported from a major clinical trial indicate that this might be close to reality.
June 28, 2010
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'Habitat' AI model helps stratify lung nodule disease risk on LDCT
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CT body composition data prove useful for diagnosing metastatic NSCLC
By Kate Madden Yee
Body composition data from routine CT imaging helps clinicians diagnose, develop treatment, and predict outcomes of metastatic non-small cell lung cancer (mNSCLC).
January 8, 2025
Fat Tissue Adipocytes
Ultrasound ablation is effective for treating hyperparathyroidism
By Amerigo Allegretto
Ultrasound-guided thermal ablation techniques are safe and effective in treating patients with secondary hyperparathyroidism.
January 7, 2025
Ultrasound images depict a 63-year-old man who underwent radiofrequency ablation (RFA) for the treatment of secondary hyperparathyroidism. (A–D) 2D images show four hyperplastic parathyroid glands on the right and left sides (marked with crosshairs). The numbers near the crosshairs represent the number of measured trails. (E) Ultrasound-guided infusion of isolation fluid (arrowheads) around the hyperplastic parathyroid gland to protect vital organs such as the trachea (Tr), carotid arteries (CA), and recurrent laryngeal nerve pathway area (arrow). F) Ultrasound-guided RFA of the hyperplastic parathyroid gland. (G) Immediate postoperative contrast-enhanced ultrasound shows no contrast enhancement in the ablation area. The ablation procedures for the other three parathyroid glands were the same as those described above. Image courtesy of the RSNA,
PET scans can decrease unnecessary lymph node procedures
By Will Morton
Negative prostate-specific antigen PET scans can be used to avoid unnecessary pelvic lymph node dissection in certain prostate cancer patients undergoing radical prostatectomies.
January 7, 2025
Psma Pet
Breast MRI surveillance reduces disease recurrence
By Kate Madden Yee
In women with a personal history of breast cancer, postoperative MRI surveillance appears to lower their odds of advanced second breast cancer.
January 7, 2025
Mri Breast Cancer
FDA issues draft guidance for optical imaging drugs
By AuntMinnie.com staff writers
The U.S. FDA has issued draft guidance on the development of novel optical imaging drugs and imaging devices.
January 7, 2025
Fda Logo
ASRT report highlights enrollment growth in technologist programs
By Amerigo Allegretto
Student interest in radiologic technology education programs is on the rise, suggest survey findings published by the ASRT.
January 6, 2025
Doctor Student Nurse Medical Personnel 400 (3)
PSMA-PET imaging spiked after FDA approval
By Will Morton
Rates of PET prostate cancer imaging increased rapidly after its approval by the U.S. Food and Drug Administration (FDA).
January 6, 2025
Prostate Imaging2
Study underscores value of radiologist involvement in RT planning
By Kate Madden Yee
Radiologist peer review improves the rate of clinically meaningful changes to radiation therapy (RT) planning, researchers have reported.
January 6, 2025
Radiation Therapy Suite 400
The challenges of dysrhythmic radiologists
By Paul McCoubrie, MBBS
In a new column, Paul McCoubrie, MBBS, discusses the characteristics of "dysrhythmic" radiologists.
January 3, 2025
Paul McCoubrie, MBBS.
Women with BRCA1/2 germline mutations are often denied breast MRI
By Kate Madden Yee
Women with BRCA1/2 germline mutations are often denied breast MRI -- despite the fact that the exam is recommended for this population.
January 3, 2025
Mri Breast Cancer
Starting breast cancer screening at 40 is more cost-effective
By Amerigo Allegretto
Starting breast cancer screening at age 40 is tied to improved patient outcomes and reduced healthcare spending on treatment.
January 3, 2025
Women Cancer Patient
PSMA-PET/CT bests conventional imaging for prostate cancer diagnosis
By Kate Madden Yee
PSMA-PET/CT bests conventional imaging when it comes to identifying high-risk, nonmetastatic, hormone-sensitive prostate cancer, researchers say.
January 3, 2025
Prostate Cancer
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