Louise Gagnon

Economics
Technology and a personal touch can drive postpandemic growth
Now, two-and-a-half years after the initial COVID-19 pandemic lockdown, many radiology practices are experiencing pressure to grow – even as many groups are still in recovery mode.
October 24, 2022
2022 10 20 22 21 8160 Unity Growth Concept 400
Breast
Pandemic caused screening mammo shortfall in Ontario
Over 400,000 fewer mammograms were performed in the Canadian province of Ontario during the COVID-19 pandemic than would have otherwise been conducted, according to an analysis released by the Ontario Medical Association.
October 16, 2022
2016 08 18 13 26 22 430 Breast Screening Mammo 400
CT
'A diagnostic revolutionary' -- the legacy of Godfrey Hounsfield
CT has become a vital form of medical imaging that is ubiquitous throughout the world, offering powerful insights into the human body. Most of the credit for the development of CT goes to Sir Godfrey Hounsfield, the U.K. scientist who developed the first CT scanner in 1971.
August 11, 2022
2022 08 11 21 21 9018 Hounsfield Godfrey 400
Industry News
Why leadership in radiology is more than just a title
Today's radiology leaders face myriad challenges. From managing pandemic-related workplace disruptions to coping with historic turnover in the labor force, leaders of radiologists, radiology administrators, and radiologic technologists need to be empowered to make decisions and thrive in their professional positions.
July 14, 2022
2022 07 11 17 05 1894 Business Leader Speaker Woman 400
CT
National funds needed to update imaging equipment in Canada
Canada's inadequate and outdated inventory of medical imaging equipment requires that some scanners be retired to make way for new technology, which will require a massive injection of funds from the national government.
May 25, 2022
2022 05 25 23 12 6141 Canada Flag Sunset 400
MRI
Pancreatic cysts present screening challenge for radiologists
What's the best way to handle cysts detected in the pancreas on imaging exams? Such lesions are relatively common, but only a small number are malignant, so figuring out suitable management surveillance can be a challenge.
April 20, 2022
2018 03 06 00 04 4002 Pancreas New 400
Breast
Applying ACR's TI-RADS, ATA guidelines reduces biopsies and costs
Adhering to the American College of Radiology (ACR) Thyroid Imaging Reporting and Data System (TI-RADS) or the American Thyroid Association (ATA) risk stratification guidelines decreases the number of thyroid biopsies and reduces healthcare costs, according to research presented at the recent annual meeting of the Canadian Association of Radiologists.
April 19, 2022
2019 10 24 23 31 2630 Breast Biopsy Mammotome 400
Breast
MRI double reading can reduce unnecessary biopsies
Double reading of MRI examinations in women with high risk of breast cancer can reduce the number of unneeded biopsies, decrease false-positive results, and improve detection of malignancies, according to research presented recently at the Canadian Association of Radiologists annual meeting.
April 18, 2022
2020 02 25 00 02 3958 Mri Breast Cancer 20200225002942
Breast
Did Choosing Wisely really reduce unnecessary imaging?
The Choosing Wisely initiative was designed to reduce unnecessary medical procedures. But a new analysis of the project's impact on two imaging scenarios -- staging for prostate and breast cancer -- raises questions about its effectiveness.
April 13, 2022
2020 09 10 18 58 9346 Ct Scanner Control Room2 Radiologist 400
Ultrasound
Use of ultrasound contrast lags, despite its clear benefits
While there are passionate advocates for ultrasound contrast in radiology and other medical specialties, its use has failed to expand -- despite the fact that it offers solid benefits, according to ultrasound experts.
January 17, 2022
2022 01 14 21 47 9176 Bubbles Ultrasound Contrast 400
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Top Stories
I-123 MIBG–negative and F-18 MFBG–positive scans showing multiple lesions in 9-year-old male with relapsed high-risk, multiple-relapse neuroblastoma (stage IV disease) receiving chemoimmunotherapy. (A) I-123 MIBG uptake is seen in lower lumbar vertebrae (arrows). Positive uptake with F-18 MFBG PET (B; black arrows) in skull, spine, pelvic bones, femora, and left tibia (B and C; blue and white arrows). Bone marrow biopsy was positive for disease. Follow-up I-123 MIBG imaging (D; left) and spine MRI (D; right) performed six weeks later showed diffuse disease in skull and spine, corresponding to F-18 MFBG–avid sites.
Molecular Imaging
PET tracer shows promise in patients with neuroblastoma
The PET tracer performed better than standard SPECT imaging with iodine-123 metaiodobenzylguanidine.
Contrast Injector
CT
ISCT: 2022 ICM shortage was a 'wake-up call.' Did we listen?
Flower Chrysanthemum 400
Imaging Leaders
Radiology world mourns passing of Leonard Berlin
Klebsiella Adobe Zachary
CT
Revealed: The cause of CT safety incident in Belgium
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PET tracer shows promise in patients with neuroblastoma
By Will Morton
The PET tracer performed better than standard SPECT imaging with iodine-123 metaiodobenzylguanidine.
September 4, 2025
I-123 MIBG–negative and F-18 MFBG–positive scans showing multiple lesions in 9-year-old male with relapsed high-risk, multiple-relapse neuroblastoma (stage IV disease) receiving chemoimmunotherapy. (A) I-123 MIBG uptake is seen in lower lumbar vertebrae (arrows). Positive uptake with F-18 MFBG PET (B; black arrows) in skull, spine, pelvic bones, femora, and left tibia (B and C; blue and white arrows). Bone marrow biopsy was positive for disease. Follow-up I-123 MIBG imaging (D; left) and spine MRI (D; right) performed six weeks later showed diffuse disease in skull and spine, corresponding to F-18 MFBG–avid sites.
ISCT: 2022 ICM shortage was a 'wake-up call.' Did we listen?
By Kate Madden Yee
In 2022, the global supply chain for ICM was disrupted by COVID lockdowns -- and this kind of crisis will likely occur again.
September 4, 2025
Contrast Injector
Radiology world mourns passing of Leonard Berlin
By Amerigo Allegretto
The radiology world is mourning the loss of Leonard Berlin, MD, a leading voice on the intersection between medicine and malpractice.
September 4, 2025
Flower Chrysanthemum 400
Revealed: The cause of CT safety incident in Belgium
By Edna Astbury-Ward, PhD
A single bottle of contaminated contrast agent was the cause of eight patients' illness after undergoing CT in Belgium.
September 4, 2025
Klebsiella Adobe Zachary
Agentic AI as the new infrastructure for interoperability
By Rishi Nayyar
Agentic AI can improve interoperability in imaging, according to a column by PocketHealth Co-founder and CEO Rishi Nayyar.
September 3, 2025
Nayyar Rishi Thumbnail
AI interpretation leads to high NPV, recall rates in breast imaging
By Amerigo Allegretto
In a new study, an AI system reached near-perfect negative predictive value (NPV) in breast imaging but almost doubled the recall rate.
September 3, 2025
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How does practice consolidation affect radiology services pricing?
By Kate Madden Yee
Hospital and private equity-affiliated radiology practices charge more for radiologic services compared with independent practices.
September 3, 2025
Medical Bill Final Notice
Coming soon? 'Regenerative imaging'
By Liz Carey
A CRISPR/Cas9 gene imaging system advances the field of regenerative imaging for stem cell tracking in stroke.
September 2, 2025
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Combination of osmotically active agents improve drug delivery to brain
By Will Morton
MRI and PET showed that a combination of osmotically active agents safely increased blood-brain barrier permeability in mice.
September 2, 2025
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Follow-up analysis shows ELCAP's continued efficacy for CVD prediction
By Kate Madden Yee
Follow-up analysis of the ELCAP-CAC scoring system has shown it to be effective for predicting death from cardiovascular disease (CVD).
September 2, 2025
Chest Heart Pain
Node-RADS evaluates breast cancers on MRI exams
By Amerigo Allegretto
Node-RADS showed promising results for evaluating invasive ductal and lobular breast cancers.
September 2, 2025
2025 09 02 Radiology Idc Ilc Noderads Thumbnail A
UnitedHealthcare alleges billing fraud in new RP lawsuit
By Liz Carey
Pass-through billing has come up again in a new lawsuit alleging RP funneled in-network claims through a "sham out-of-network entity."
August 29, 2025
Radiology Partners Lawsuit August 2025 Thumbnail
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