Jacqueline Hewett

Radiation Oncology/Therapy
QA records shed light on radiotherapy patient errors
The computerization of radiation therapy planning and treatment can be a double-edged sword, both reducing and increasing the risk of errors. But computerization does make treatment safer, according to a 10-year analysis of errors at Memorial Sloan-Kettering Cancer Center in New York City.
May 16, 2012
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Radiation Oncology/Therapy
Tiny oxygen generator boosts radiotherapy
A tiny oxygen generator that can be implanted directly into the hypoxic center of tumors using a biopsy needle has been unveiled by researchers in the U.S. The micro-oxygen generator could potentially improve the efficacy of radiotherapy.
November 1, 2011
2011 11 01 14 43 14 397 Imog1 Thumb
Radiation Oncology/Therapy
Software estimates motion effects for proton dose planning
Tumor motion due to respiration is a serious problem when it comes to ensuring that a scanned proton beam delivers the planned dose to a given target volume. Now, software simulating the delivery of a scanning proton beam to a moving lung tumor is resolving this problem.
October 31, 2011
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Radiation Oncology/Therapy
Gold nanoparticles boost radiotherapy efficacy
By using gold nanoparticles with conventional megavoltage x-rays, researchers are predicting that tumor vasculature will receive a significant enhancement in local dose. Not only could this dose boost promote vascular shutdown in tumors, the hope is that it will suppress metastases and improve patient outcomes.
February 16, 2011
2009 01 15 16 03 49 510 Med Phys Web Logo 100
Page 1 of 1
Top Stories
Stroke Evt
Interventional
EVT promising in patients with extracranial ICA occlusions
Endovascular thrombectomy (EVT) and best medical treatment are both effective and safe options for patients with acute extracranial internal carotid artery occlusions.
Images depict a 49-year-old female participant with cryptogenic cirrhosis who presented with a 3.2-cm liver lesion. This biopsy-confirmed hepatocellular carcinoma (HCC) with an initial categorization of Liver Imaging Reporting and Data System (LI-RADS) category LR-4 (probably HCC) at CT was upgraded to LR-5 (definitely HCC) at contrast-enhanced ultrasound (CEUS). (A) Precontrast CT images in the liver show vague hypoattenuation in the medial left hepatic lobe (arrows). (B) Arterial phase images demonstrate no definite arterial phase hyperenhancement (arrows). (C) Washout and an enhancing capsule (arrows) on a late-phase image resulted in an LR-4 categorization. (D) B-mode ultrasound shows a round hypoechoic nodule (arrows). (E) An early-phase CEUS image shows clear arterial-phase hyperenhancement (arrows); (F) No washout at one minute (arrows), and (G) late, mild washout at four minutes (arrows) resulted in a CEUS LR-5 categorization.
Ultrasound
CEUS resolves indeterminate CT, MRI liver observations
Ctca
Molecular Imaging
PET/CT can rule out CAV in heart transplant patients
Lung Ct Images
CT
Machine learning can predict immunotherapy response in NSCLC patients
Coffta Sandy Thumbnail
Economics
Current topics in mammography
More in Home
EVT promising in patients with extracranial ICA occlusions
By Will Morton
Endovascular thrombectomy (EVT) and best medical treatment are both effective and safe options for patients with acute extracranial internal carotid artery occlusions.
January 21, 2025
Stroke Evt
CEUS resolves indeterminate CT, MRI liver observations
By Amerigo Allegretto
Contrast-enhanced ultrasound (CEUS) can resolve some high-risk indeterminate liver observations initially seen on CT or MRI.
January 21, 2025
Images depict a 49-year-old female participant with cryptogenic cirrhosis who presented with a 3.2-cm liver lesion. This biopsy-confirmed hepatocellular carcinoma (HCC) with an initial categorization of Liver Imaging Reporting and Data System (LI-RADS) category LR-4 (probably HCC) at CT was upgraded to LR-5 (definitely HCC) at contrast-enhanced ultrasound (CEUS). (A) Precontrast CT images in the liver show vague hypoattenuation in the medial left hepatic lobe (arrows). (B) Arterial phase images demonstrate no definite arterial phase hyperenhancement (arrows). (C) Washout and an enhancing capsule (arrows) on a late-phase image resulted in an LR-4 categorization. (D) B-mode ultrasound shows a round hypoechoic nodule (arrows). (E) An early-phase CEUS image shows clear arterial-phase hyperenhancement (arrows); (F) No washout at one minute (arrows), and (G) late, mild washout at four minutes (arrows) resulted in a CEUS LR-5 categorization.
PET/CT can rule out CAV in heart transplant patients
By Will Morton
Cardiac PET/CT scans can effectively rule out moderate to severe cardiac allograft vasculopathy (CAV) in heart transplant patients.
January 17, 2025
Ctca
Machine learning can predict immunotherapy response in NSCLC patients
By Kate Madden Yee
Machine learning (ML) can help clinicians predict immunotherapy response in patients with inoperable non-small cell lung cancer (NSCLC).
January 17, 2025
Lung Ct Images
Current topics in mammography
By Sandy Coffta
Sandy Coffta of Healthcare Administrative Partners discusses changes in reporting and reimbursement for mammography exams.
January 17, 2025
Coffta Sandy Thumbnail
Surgeon General's alcohol advisory puts patient counseling at the fore
By Amerigo Allegretto
Patient communication and education may be key for radiologists in the wake of the Surgeon General’s advisory on alcohol-related cancer risk.
January 17, 2025
Wine Red Glass 400
FAPI-PET shows promise for imaging gastric cancers
By Will Morton
Gallium-68 fibroblast activation protein inhibitor (FAPI) PET/CT is a promising new method for imaging gastric cancer.
January 16, 2025
Fapi Pet Gastric Cancer Thumbnail
CEM has slightly higher mean glandular dose than DBT, mammography
By Amerigo Allegretto
Contrast-enhanced mammography (CEM) has a slightly higher mean glandular dose than other breast imaging modalities.
January 16, 2025
Contrast Injector
ACS: Cancer mortality continues to drop
By Kate Madden Yee
Cancer mortality rates continue to drop -- although incidence of the disease is rising in women, according to an annual study released by the ACS.
January 16, 2025
Cancer Cell Target2
POCUS useful for diagnosis of retained conception tissue
By Amerigo Allegretto
Point-of-care ultrasound (POCUS) can be a useful tool for diagnosing the presence of retained conception tissue.
January 15, 2025
Ultrasound Portable
Top 5 predictions for the imaging IT and AI markets in 2025
By Amy Thompson
Amy Thompson of Signify Research shares five predictions for the Imaging IT and AI markets in a new column.
January 15, 2025
2025 Trends Concept
Simulated contrast-enhanced MRI helps assess prostate cancer
By Kate Madden Yee
Simulated contrast-enhanced MR images from noncontrast sequences using deep learning show promise for assessing clinically significant prostate cancer.
January 15, 2025
2025 01 14 Radiology Huang Figure5 Thumbnail
Page 1 of 111
Next Page