Kathlyn Stone

Radiation Oncology/Therapy
VMAT provides same treatment as IMRT in half the time
A study using volumetric modulated arc therapy (VMAT) for prostate cancer affirms the feasibility of the novel technique. Researchers from Memorial Sloan-Kettering Cancer Center compared VMAT with standard intensity-modulated radiation therapy (IMRT) using retrospective data from five patients who were prescribed a dose of 86.4 Gy.
October 30, 2008
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MRI
MRI magnet explosions warrant improved venting and inspections
At least five MRI magnets have exploded in U.S. healthcare facilities over the last 10 years, but the incidents have gone mostly unreported, according to Wlad Sobol, Ph.D., a medical physicist and professor of radiology at the University of Alabama at Birmingham (UAB) Health System.
September 29, 2008
Digital X-Ray
Large CR study reveals wide variation in adult and pediatric protocols
A retrospective study of more than 40,000 computed radiography exams obtained from six University of Maryland departments suggests wide variations in protocols among hospital departments and slightly higher-than-necessary radiation exposure to patients, particularly children.
September 2, 2008
Nuclear Medicine
PET dose-painting methods produce discordant results
As intensity-modulated radiation therapy becomes more sophisticated, oncologists are investigating new dose-painting methods to determine which areas of tumor target volume should receive additional radiation dose. But a new study indicates that two promising methods to guide dose painting actually produce sharply varied results.
August 26, 2008
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Image Processing
New method reduces scatter in portable x-ray systems
Researchers at Emory University's Winship Cancer Institute and GE Global Research are collaborating on a software-based method for reducing scatter in portable systems. Tested on thorax phantom images, the algorithm reduced the x-ray signal by 50% to 100% without loss of image quality.
August 21, 2008
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Radiation Oncology/Therapy
Options abound for radiation therapy QC
Quality control is a vital issue in radiation therapy. A panel of experts recently discussed various approaches for radiation therapy quality control, ranging from peer reviews and data sharing to regulatory approaches and standards.
August 18, 2008
Radiation Oncology/Therapy
Surrogate organs stand in for lung tumors during fluoroscopic tracking
Working from the premise that other more visible anatomic features move in concert with lung tumors, researchers have developed a computer algorithm that uses these visible features as tumor stand-ins. In a feasibility study, the method localized the tumor position to an accuracy of within 1 mm and 2.5 mm.
August 7, 2008
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Nuclear Medicine
SPECT/CT mammography system produces first patient images
HOUSTON - Duke University researchers have begun the first patient studies of a hybrid SPECT/CT mammography system, and the unit has several advantages over conventional breast imaging technology, according to their findings.
July 29, 2008
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Radiation Oncology/Therapy
AAPM speaker tackles topic of healthcare reform
HOUSTON - Physics-based technology has had an undeniably positive effect on medical diagnosis and treatment, but that same technology is overused and its expense is contributing to America's exorbitant healthcare costs, according to the opening address at the American Association of Physicists in Medicine (AAPM) annual meeting.
July 28, 2008
Breast
Digital breast tomosynthesis boosts reader accuracy, cuts recall rate
Digital breast tomosynthesis (DBT) boosts radiologists' cancer detection rates compared to full-field digital mammography (FFDM) alone, according to a multicenter, multireader study that evaluted reader performance with DBT. For this study, a dozen radiologists at five clinics took part in the trial, which compared radiologists' cancer detection rates and screening recall rates using DBT.
December 27, 2007
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November 2024 Kuwtr Ep9
Podcasts
Podcast: What's next for chest radiographs?
In this episode of Keeping up with the Radiologists, co-hosts Saurabh (Harry) Jha, MD, and Mitchell Schnall, MD, assess the future of the chest radiograph.
Thyroid Cancer
Interventional
Thermal ablation effective long term in patients with thyroid cancer
Baby Bottle
Ultrasound
Could cranial ultrasound sub for brain MRI in imaging infants?
Lateral conventional attenuation (a, b, e, f) and co-registered dark-field (c, d, g, h) images of two spine specimens. Vertical (a, c, e, g) and horizontal (b, d, f, h) scans of the spine specimen of a 77-year-old female with osteoporosis (bone mineral density = 65.75 mg/dL) (a–d) and a non-osteoporotic spine specimen (e–h) of a 61-year-old female (bone mineral density = 169.38 mg/dL).
Digital X-Ray
Dark-field x-ray detects bone changes related to osteoporosis
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Podcast: What's next for chest radiographs?
By Liz Carey
In this episode of Keeping up with the Radiologists, co-hosts Saurabh (Harry) Jha, MD, and Mitchell Schnall, MD, assess the future of the chest radiograph.
November 7, 2024
November 2024 Kuwtr Ep9
Thermal ablation effective long term in patients with thyroid cancer
By Will Morton
Outcomes over 10 years suggest that image-guided thermal ablation is a safe and effective option for patients with papillary thyroid carcinoma.
November 7, 2024
Thyroid Cancer
Could cranial ultrasound sub for brain MRI in imaging infants?
By Amerigo Allegretto
Cranial ultrasound could have utility for imaging infants with hypoxic-ischemic encephalopathy.
November 6, 2024
Baby Bottle
Dark-field x-ray detects bone changes related to osteoporosis
By Will Morton
Dark-field x-ray imaging can provide insights into bone microstructure and potentially could have a role in assessing osteoporosis.
November 5, 2024
Lateral conventional attenuation (a, b, e, f) and co-registered dark-field (c, d, g, h) images of two spine specimens. Vertical (a, c, e, g) and horizontal (b, d, f, h) scans of the spine specimen of a 77-year-old female with osteoporosis (bone mineral density = 65.75 mg/dL) (a–d) and a non-osteoporotic spine specimen (e–h) of a 61-year-old female (bone mineral density = 169.38 mg/dL).
Radiology responds to devastating floods in Spain
By Edna Astbury-Ward, PhD
Members of Valencia's radiological community are reeling from the worst flooding experienced by the region for generations.
November 6, 2024
Cars Picanya
Tributes pour in for CT pioneer Willi Kalender
By Philip Ward
The medical imaging community has paid tribute to Willi Kalender, PhD, the renowned medical physicist.
November 6, 2024
2024 11 05 Willi Kalender Thumbnail
Ultrasound nonmass breast lesion features may signal malignancy
By Amerigo Allegretto
Some nonmass breast lesion characteristics on ultrasound exams can be considered suspicious for malignancy at screening ultrasound.
November 5, 2024
Images depict a 43-year-old woman with a malignant non-mass lesion that was diagnosed as microinvasive ductal carcinoma. (A) Transverse and (B) longitudinal ultrasound images show a hypoechoic non-mass lesion (solid arrows) with segmental distribution in the left breast. The lesion has associated calcifications (dashed arrows in A). (C) Longitudinal color Doppler ultrasound image shows high vascularity. (D) Magnified image in the mediolateral oblique view from screening mammography shows grouped calcifications (arrows), which are considered a mammographic correlate of the ultrasound-detected non-mass lesion (A radiopaque marker attached to the skin is visible in the image because the mammographic exam was performed after screening breast ultrasound). Ultrasound-guided core needle biopsy and pathologic examination revealed ductal carcinoma in situ, but the lesion was upgraded to microinvasive ductal carcinoma at subsequent surgery (2.5-cm ductal carcinoma in situ, histologic grade II, estrogen receptor-positive, progesterone receptor-positive, human epidermal growth factor receptor type 2-negative).
Ventricular remodeling on cardiac MRI predicts cardiovascular outcomes
By Kate Madden Yee
The presence of left ventricular changes revealed on cardiac MRI can help predict 10-year negative cardiovascular outcomes, researchers have reported.
November 5, 2024
Heart Damage
Imaging societies' reactions mixed on finalized MPFS, HOPPS rule
By Amerigo Allegretto
Radiological societies have mixed thoughts after the CMS finalized its 2025 MPFS and the Hospital Outpatient Prospective Payment System rules.
November 4, 2024
Capitol Hill Government
Chest x-ray AI shines in ‘real-world’ setting
By Will Morton
A PACS-integrated AI tool correctly identified pneumothorax on inpatient chest x-rays, prioritized scans, and improved radiologist reporting times.
November 4, 2024
Critical Care Suite
Cloud-based imaging: The new catalyst for healthcare transformation
By Dhaval Shah
Dhaval Shah of CitiusTech discusses the benefits of cloud-based image management for radiology practices.
November 4, 2024
Dhaval Shah Thumbnail
SPECT/CT predicts treatment response in Pluvicto patients
By Will Morton
SPECT/CT scans taken just four hours after patients begin Lu-177 PSMA-617 treatment can help assess treatment responses.
November 1, 2024
Pluvicto Spect Ct Response Thumbnail
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