R.K. Gupta

MRI
Iterative resolution sharpening in MRI: A new technique
October 29, 2000
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Interventional
T1/T2-weighted MRgFUS ratio imaging improves brain lesion contrast
T1/T2-weighted ratio imaging via MRgFUS improves chronic lesion contrast compared to T2-weighted imaging.
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MRI
AI image reconstruction improves MRI's performance, patient experience
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Ultrasound
New breast ultrasound approach cuts false positives by nearly a third
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.
Digital X-Ray
Dynamic chest radiography effective for diagnosing COPD
Gadolinium
MRI
Study reports low NSF rates following GBCA administration
More in Home
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
2025 12 16 Radiology Mrgfus Brain Thumbnail
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
Mri Woman Sleeping Adobe Neat Design Studio
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
2025 12 02 Media Release Graphic New Tech In Breast Ultrasounds Thumbnail
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
2025 12 16 Radiology Ceus Liver Mri Thumbnail
Venture capital investment rising in radiology
By Amerigo Allegretto
Venture capital investment continues to rise in radiology, with over $11 billion being invested in imaging companies.
December 15, 2025
Research Money
Proton therapy effective for patients with oropharyngeal cancer
By Will Morton
The treatment targets tumors with charged particles rather than the high-energy x-rays of photon therapy.
December 15, 2025
Proton Therapy
SBI: WISDOM trial is 'contaminated and underpowered'
By Kate Madden Yee
The trial's conclusions are "unsupported," the Society of Breast Imaging (SBI) said, "due to significant methodological flaws."
December 15, 2025
Breast Screening Mammo
POCUS training leads to successful nerve block placement
By Amerigo Allegretto
Training can help novice point-of-care ultrasound users with guiding nerve blocks in patients with hip fractures.
December 15, 2025
Hip Fracture X Ray
What causes lung cancers to be missed on screening?
By Kate Madden Yee
Incomplete smoking history documentation appears to be one of the reasons.
December 12, 2025
Lung Cancer
Early PET/CT feasible in women with suspected breast cancer
By Will Morton
Early imaging is not only more patient-friendly but also has the potential to simplify clinical workflows.
December 12, 2025
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