Larry Nguyen

Ultrasound
ISO certification: Why it's important to you
While medical device companies often tout International Organization for Standardization (ISO) certifications, potential customers may not understand what these certifications actually prove. But a little due diligence can clear up any uncertainty, writes Summit Imaging CEO Larry Nguyen.
October 8, 2015
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Top Stories
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Molecular Imaging
PET/CT detects bone involvement in patients with lymphoma
Research suggests that F-18 FDG-PET/CT could replace invasive bone marrow biopsy.
Insurance Policy
Practice Management
Insurer benchmark used for NSA disputes lower than in-network rate
2025 12 18 Radio Graphics Seyedsaadat Fig11 Thumbnail
MRI
Is 7-tesla MRI poised for routine clinical integration?
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MRI
Online safety screening for MRI exams reduces prep time, cancellations
2025 12 08 Dark Field Pneumothorax Thumbnail
Digital X-Ray
Dark-field radiography improves detection of pneumothorax
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PET/CT detects bone involvement in patients with lymphoma
By Will Morton
Research suggests that F-18 FDG-PET/CT could replace invasive bone marrow biopsy.
December 19, 2025
2025 12 19 Blood Cancer Thumbnail
Insurer benchmark used for NSA disputes lower than in-network rate
By Amerigo Allegretto
A study by the AFHC found that QPAs used for the No Surprises Act (NSA) often understate actual median in-network payment rates.
December 19, 2025
Insurance Policy
Is 7-tesla MRI poised for routine clinical integration?
By Kate Madden Yee
The future looks bright for the technology, researchers noted.
December 19, 2025
2025 12 18 Radio Graphics Seyedsaadat Fig11 Thumbnail
Online safety screening for MRI exams reduces prep time, cancellations
By Kate Madden Yee
The average 4.6% reduction in patient preparation time may seem modest, but is a meaningful gain in efficiency, researchers noted.
December 18, 2025
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Dark-field radiography improves detection of pneumothorax
By Will Morton
The technique substantially reduced reading time without compromising sensitivity.
December 18, 2025
2025 12 08 Dark Field Pneumothorax Thumbnail
Podcast: No Surprises Act IDR needs corrective action
By Liz Carey
Radiology Partners' Rich Heller, MD, discusses independent dispute resolution (IDR) under the No Surprises Act and more.
December 18, 2025
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T1/T2-weighted MRgFUS ratio imaging improves brain lesion contrast
By Amerigo Allegretto
T1/T2-weighted ratio imaging via MRgFUS improves chronic lesion contrast compared to T2-weighted imaging.
December 17, 2025
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AI image reconstruction improves MRI's performance, patient experience
By Kate Madden Yee
Study findings underscore the clinical value of AI in MRI, researchers noted.
December 17, 2025
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New breast ultrasound approach cuts false positives by nearly a third
By Amerigo Allegretto
Applying a generalized contrast-to-noise ratio to short-lag spatial coherence breast images could help reduce false positives.
December 17, 2025
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Dynamic chest radiography effective for diagnosing COPD
By Will Morton
The technique can serve as an alternative to pulmonary function tests for diagnosing chronic obstructive pulmonary disease (COPD).
December 16, 2025
Tracking and quantitative analysis of diaphragmatic motion and projected lung area (PLA) at dynamic chest radiography (DCR) in a 55-year-old healthy man during deep breathing. (A) Posteroanterior radiograph with purple and green lines indicating the right and left lateral diaphragm apices, respectively. (B) Graph of diaphragmatic motion (in millimeters; y-axis) over time (i.e., frame number; x-axis). The software tracked the position of the diaphragm apex at DCR to obtain these amplitude-time plots of diaphragmatic motion (right lung, purple; left lung, green). The dark blue line corresponds to the frame representing the end of inspiration; the light blue line corresponds to the frame representing the end of expiration. (C) Posteroanterior radiograph shows the PLA (outline), which is the area surrounded by the medial edge of the ribs, the diaphragm, and the edge of the mediastinum. (D) Graph of PLA (in millimeters squared; y-axis) over time (i.e., frame number; x-axis). The software automatically tracked the boundaries of the lung fields and obtained the time-varying curves of the bilateral lung field areas. The blue line corresponds to the frame representing the end of inspiration.
Study reports low NSF rates following GBCA administration
By Kate Madden Yee
Nephrogenic systemic fibrosis (NSF) following gadolinium-based contrast agent (GBCA) use is rare, researchers have reported.
December 16, 2025
Gadolinium
CEUS finds residual liver cancer after downstaging therapy
By Amerigo Allegretto
Contrast-enhanced ultrasound (CEUS) is noninferior to contrast-enhanced MRI for detecting liver cancer after downstaging therapy.
December 16, 2025
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