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Ultrasound: Contrast agents add new dimension to sonographyMicrobubbles of air or other gases are ideally suited as echo-enhancers because of two factors: The high difference in acoustic impedance at gas fluid/tissue interfaces provides strong acoustic backscatter; and gas microbubbles approximately 1 to 5 microns in size resonate in the acoustic beam at frequencies used in diagnostic ultrasound. This "lucky coincidence" substantially increases the echo-enhancing potential of microbubbles.
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Oncology tasks require disease-specific PET/CTCombined PET/CT was the first integrated dual-modality solution to reach clinical practice.1 Clinical PET/CT scanners have now been operating for almost a decade. Their quasisimultaneous acquisition of complementary anatomic and functional information has revolutionized oncology diagnosis and therapy assessment.
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Follicular LymphomaAn 84-year-old female presents for asymptomatic screening mammogram. Craniocaudal and MLO views of the right breast on demonstrate stable appearance of an intramammary lymph node in the upper outer quadrant.
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Imaging helps in diagnosis of musculoskeletal massesPrimary malignant musculoskeletal tumors are an inhomogeneous group of lesions originating from mesenchymal tissues. Soft-tissue sarcomas can derive from fatty tissue (liposarcoma), muscles (leiomyosarcoma, rhabdomyosarcoma), connective tissue (fibrosarcoma), blood vessels (angiosarcoma), and neurogenic tissue (malignant peripheral nerve sheath tumor, malignant schwannoma).
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The Impending Arrival of ICD-10: How Can You Cope?On October 1, 2013, every radiology practice has to start using the International Classification of Disease 10 (ICD-10), instead of ICD-9. This will bring immense complications for radiologists in their billing and payment procedures. Is ICD-10 beneficial, a bureaucratic burden, or a bit of both? And, in any event, what are the best measures you and your staff can take to prepare?
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MR breast imaging guides interventional proceduresContrast-enhanced MR imaging has gained recognition in the last decade as a valuable adjunct to both mammography and ultrasound for detection of breast carcinomas. Most authors agree that the sensitivity of breast MRI is excellent, ranging between 88% and 100%, although specificity is only moderate, at 37% to 95%.
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CR and DR triumph over conventional techniquesDigital radiography is now the standard technology for X-ray imaging. Computed radiography and solid-state (flat-panel) digital radiography are digital X-rays main detector systems.
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CR and DR triumph over conventional techniquesDigital radiography is now the standard technology for X-ray imaging. Computed radiography and solid-state (flat-panel) digital radiography are digital X-rays main detector systems.
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Image-guided ablation eases bone tumor painTumor ablation is defined as the direct application of chemical or thermal therapies to achieve substantial tumor destruction. Modalities such as ethanol ablation, radiofrequency ablation, laser ablation, and cryoablation have been used widely, primarily for the management of hepatic neoplasms.
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Radiology doesn’t escape far reach of healthcare reform legislationHealthcare reform legislation signed into law last month by President Obama promises to bring sweeping changes to the healthcare system, potentially including the practice of radiology.
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Dual-source CT advances coronary angiographyDual-source CT represents a significant advance for coronary CT angiography. In our preliminary experience, it has made CTA more robust and provided reliable assessment of vessel wall irregularities and stenoses without motion artifacts. Radiation exposure can be reduced significantly compared with conventional CTA.
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MRI reveals cause of heel painA 51-year-old woman presented to the clinic complaining of left heel pain.Tenderness and soft tissue swelling were observed. MRI reveals Haglund's deformity.
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The Pathway to Dominating Radiology and ImagingA list of the major players in radiology and what radiologists should know.
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Carotid stenting offers new interventional practice optionAs carotid artery stenting becomes an accepted tool for stroke prevention in appropriate patients, interventional radiologists and neuroradiologists are determining where this procedure fits into their practice. Some have already developed an active carotid artery stenting practice, but others are looking for resources to help them begin to offer this service. Consideration of many elements is required to offer a high-quality service.
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Cardiology PACS must produce moving imagesTensions between radiology and cardiology in the field of cardiac imaging have persisted for decades. The 1970s and 1980s were rife with turf battles over interventional angiography, echocardiography, and cardiac SPECT. More recently, cardiac MRI and CT have been the focus of intense debate about who is best qualified to perform and interpret these scans.
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Due Diligence for Practice-Hospital Clinical IntegrationThe overall political and social pressure to contain healthcare spending will heighten the value and requirement for clinical integration between physicians and hospitals. At a high level there are essentially two considerations for hospitals and radiology groups.
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A Radiologist’s New Year’s Resolutions, RevisitedLet’s review my 2012 goals to image gently, learn more, be heard, and get involved in the health care community. There were some improvements, some shortfalls.
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Ultrasound: Liver tumors yield to ablation techniquesHepatocellular carcinoma (HCC) is a multicentric malignant tumor. The underlying liver disease of HCC is most often chronic hepatitis or cirrhosis of viral, or less commonly alcoholic, origin. The only method of detecting the tumor before it becomes advanced is screening the patient with ultrasound every six months. Even if the detected tumor is single, other tumors will appear eventually, the time delay depending on various factors.
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Remote image archiving relieves hospital of storage and obsolescence challengesThe adoption of digital technologies and IT in healthcare, and the consequent growth in the volume of patient data, presents hospitals with significant challenges in terms of data storage and obsolescence management.
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PET/CT finds footing in breast, cervical, and ovarian carcinomaPET/CT continues to find new applications in detection and monitoring of breast, cervical, and ovarian carcinoma. An estimated 211,000 new cases of invasive breast carcinoma, with almost 41,000 deaths, are expected to occur in the U.S. during 2007. Breast carcinoma is the most frequently diagnosed malignancy in women and ranks second in terms of cancer deaths after lung cancer.
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Nonradiologists Have Binged on Musculoskeletal UltrasoundStudy seems to support concern about increased MSK ultrasound use, possibly facilitated by the low cost and ready availability of the technology.
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Looking to RSNA 2015: Radiology’s Journey to ValueAt RSNA 2015 and beyond, radiology is looking at how to transition to value-based care.
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Calcium scoring, coronary CTA display strengthsThe number of coronary CTangiographies performedin Europe has alreadyovertaken the practice ofcalcium scoring, accordingto a 2007 European Society ofRadiology survey on cardiac radiology.
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Male PseudohermaphroditismA 15-year-old female patient with primary amenorrhea and absent secondary sexual characters.
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Coronary CT angiography saves lives and money: 20,000-plus cases prove itQuestions remain from practitioners, payers, and administrators regarding the economic impact of coronary CT angiography on established diagnostic modalities and the effects on reimbursement within imaging. To address these concerns, we have developed the CCTA Data Registry, which now consists of more than 20,000 cases. Preliminary results indicate that coronary CTA is being utilized appropriately and affects savings for the healthcare system.
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Beta blockers prove optional with dual-source scannersDuring my first eight years of performing and interpreting cardiac multislice CT, up to 2006, our mantra was always that slower heart rates improve diagnostic image quality. Aside from image quality, slow heart rates also traditionally translated into lower patient radiation exposure. Our most elegant tool for radiation protection at cardiac CT was ECG-dependent tube current modulation, which applies the full nominal tube output only during diastole. This tool, unfortunately, has been limited for the longest time to patients with slow and steady heart rates.
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MSCT assists in renal cell cancer workupRenal cell cancer is the most frequently encountered malignant tumor in the kidney. Over 30,000 new cases are diagnosed annually in the U.S. Many cases are now detected incidentally, as a result of the widespread use of multislice CT. MSCT usage is also redefining diagnostic workup of renal lesions and facilitating renal cell cancer staging.
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Trainees Help Reduce Addendum Rates in Radiology ReportsRadiology reports may have fewer addenda when residents or fellows are involved in the process.
