Radiation Safety in Imaging Today

Mar 6th, 2014
Houston, TX
US
https://store2.aheconline.com/index.php?route=product/product&path=59_123&product_id=918
This four-hour course will provide vital radiation safety information to both the technologist and nontechnologist performing examinations in healthcare facilities today.
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CEUS outshines color Doppler imaging for indeterminate kidney lesions
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CEUS outperformed color Doppler ultrasound in a study focusing on indeterminate kidney lesions.
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3D MRI technique helps plan treatment for pediatric heart conditions
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The method makes "heart muscle and heart valves visible while making blood and surrounding tissues transparent," researchers noted.
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Could AI scoring help with managing DCIS?
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An AI model showed associations with recurrence after DCIS surgery and performed comparably to established clinical risk models.
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Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
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The modality correctly diagnoses dermoids and simple cysts, but is not as effective at identifying other types of adnexal lesions.
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Axial contrast-enhanced CT scan in a 28-year-old premenopausal woman shows an incidentally detected solid-appearing left ovarian lesion (solid arrow) anterior to the uterus (U), associated with trace ascites in the right adnexa and cul de sac (dashed arrows). At pathologic analysis, this was shown to be ovarian dysgerminoma. Two readers misdiagnosed this lesion, one as a leiomyoma and one as an ovarian fibroma.
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The commercially available image reconstruction algorithm outperformed standard hybrid iterative reconstruction for assessing coronary stenosis.
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Images from two representative cases. (A-C) Images in an 82-year-old man with a calcified plaque in the proximal segment of the left anterior descending artery. (A, B) Curved planar reconstruction images from CCTA with (A) hybrid iterative reconstruction (HIR) and (B) super-resolution deep learning reconstruction (SR-DLR) show that the measured PDS was 66% for the HIR image and 42% for the SR-DLR image. (C) Quantitative analysis of the invasive coronary angiography (ICA) image (reference standard) revealed a PDS of 34% (arrow). (D-F) Images in a 37-year-old woman with a noncalcified plaque in the middle segment of the left circumflex artery. (D, E) Curved planar reconstruction images from CCTA with (D) HIR and (E) SR-DLR show that the measured PDS was 47% for the HIR image and 80% for the SR-DLR image. (F) Quantitative analysis of the ICA image revealed a PDS of 72% (arrow). Blue, red, and yellow lines in A, B, D, and E represent the proximal reference point, stenosed lesion, and distal reference point, respectively, and the insets show the corresponding cross-sectional images.
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Trends show that nonsurgical management of DCIS is rising, paving the way for imaging's role in active surveillance.
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Gadoxetate MRI offers high sensitivity for liver cancer screening
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"Most participants undergoing HCC screening had excellent MRI quality even when ultrasound was limited," researchers noted.
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PET/CT visualizes complications in patients on hemodialysis
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F-18 sodium fluoride PET/CT scans can quantify changes in cardiac and aortic vascular calcifications.
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