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Image IQ: 45 y/o, Pain in Right Iliac FossaA 45-year-old male patient presented with pain in the right iliac fossa.
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Image IQ: Adolescent Male with Hip PainAdolescent male presented with complaint of pain in the left hip, which is relieved by analgesics.
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Young Investigator winner recaps AOCR 2010It’s an honor to give my observation about my experience at AOCR-2010. From the tiniest to the biggest, all details-be it the front office, registration counter, information desk, or audio-visual aids-were excellent.
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Singapore Radiological Society holds its 19th Annual Scientific MeetingThe 19th Annual Scientific Meeting of the Singapore Radiological Society was jointly organized with the College of Radiologists, Singapore, from Feb. 25 through 28. I have attended this meeting the past three years as it gives me ample opportunity to interact with my colleagues and feel the pulse of radiology in and around the region. Each year, the focus is on a hot topic, and this year’s topic was nuclear medicine and molecular imaging.
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Intrathoracic Accessory Lobe of the LiverA 20-year-old woman presented with a rectal mass that was malignant on biopsy. Chest radiograph and abdominal CT were ordered to look for metastases.
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Multislice CT and CAD bring new efficiencies to diagnosisComputer-aided detection is gradually gaining acceptance in radiology and has become a major research focus in the past few years. The development of CAD with multislice CT has reached the point where, together, they have the potential to offer new capabilities in the interpretation of emergency room scans.
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Patient Portals: 3 Ways to Engage Your PatientsPatient portals are an innovative and beneficial way for radiologists to communicate; you just have to use them.
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Molecular imaging shows enormous clinical potentialIt is not difficult to find resources on the topic of molecular imaging. A number of comprehensive review articles have been published1-5 and dedicated websites created (e.g., www.mi-central.org/). What follows is an introduction to this emerging area with radiologists' needs in mind.
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Virtual autopsies guide postmortem investigationPhysician Rudolf Virchow introduced microscopic examination to classic pathology about midway through the 19th century. This helped to establish modern pathology. Although autopsies are now recognized as valuable medical procedures, the core methodology has not changed for many years.
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Siemens' dual- and singlesource CTs reflect historyWith patients' well-being in focus and dose reduction as a top priority, Siemens over the past three decades has introduced innovations in the way CT operates and how it is used.
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MR imaging strides ahead in rectal cancer stagingIn rectal cancer, mortality rates are high and prognoses are generally poor, owing to the strong risk of metastases and local recurrence.
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Ovarian lesions pose diagnostic dilemmasThe main objective of imaging patients with symptoms suggestive of ovarian lesions is to distinguish benign findings from malignant disease. Masses can be characterized with a variety of noninvasive imaging techniques, including transabdominal and transvaginal ultrasound, CT, and MRI. Each of these modalities has its advantages and limitations.
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Dual-source technology extends CT applicationsCT is one of the most important of the noninvasive imaging modalities, providing 3D representations of the x-ray attenuation coefficient with submillimeter spatial resolution.
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Bilateral brachymetapodyThis 41-year-old woman presented with a known history of bilateral foot deformities and new complaints of bilateral foot pain. She had associated hallux valgus deformities.
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Dynamic contrast-enhanced MR imaging finally comes of ageTumors require new blood vessels in order to grow beyond a few millimeters in size. Once this "angiogenic switch" is thrown, a series of events occur that lead to the progression and spread of cancer. The vessels formed by tumors are not only larger and more numerous but also more permeable than normal vessels1 (Figure 1). Thus, when a patient with a tumor is injected with a gadolinium-chelate MR contrast agent, the tumor enhances more than the surrounding normal tissue.
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Targeted therapies gain groundon hard-to-treat liver tumorsNot long ago, our approach to treating difficultmetastatic tumors was to "spray and pray." Weknew that chemotherapy and other traditionaltreatment approaches could cause great damageand had a limited chance of successfully destroyingthe entire tumor.
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MR imaging ensures clarity in focal liver lesionsMost benign lesions considered unspecific on ultrasound or CT can be identified with great confidence on MRI
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Dose reduction measures benefit pediatric patientsBalancing the benefits of a procedure involving ionizing radiation against the possibility of unwanted damage is often difficult. Regulations on exposure must consider medical, economic, and ethical aspects of radiation as well as the individual and collective dose of the population.
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Ovarian lesions pose diagnostic dilemmasThe main objective of imaging patients with symptoms suggestive of ovarian lesions is to distinguish benign findings from malignant disease. Masses can be characterized with a variety of noninvasive imaging techniques, including transabdominal and transvaginal ultrasound, CT, and MRI. Each of these modalities has its advantages and limitations.
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MRI, ultrasound offer hope to arthritis patientsMRI and ultrasound can be useful tools in evaluating patients with early rheumatoid arthritis. Both techniques can detect pre-erosive synovial inflammation. They can also identify early bone damage before it becomes apparent on x-rays.
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MR imaging adds weight to sacroiliitis diagnosisEarly diagnosis of rheumatoid arthritis and monitoring of the disease during therapy have attracted considerable interest over the past decade. Imaging studies of seronegative spondyloarthropathies, however, are few and far between, even though these disorders occur as frequently as rheumatoid arthritis. Now the potential promise of biological therapy to treat ankylosing spondylitis, one of the most disabling seronegative spondyloarthropathies, is focusing attention on techniques capable of detecting the disease early and tracking its progress through treatment.
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Real-time elasticity findingsimprove breast specificityUltrasound has long been an efficient and usefuladjunct technique for breast imaging. It is thefirst modality to be proposed in some situations:if a young or pregnant woman has a palpablemass, for example, or immediately after surgery.
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40-slice scanners boost neuro CT angiographyThe introduction of 40-slice CT scanners has opened up new possibilities for CT angiography of the supra-aortal vasculature. Imaging can be performed with even thinner slices, and more rapidly, than on 16-slice systems, and images have higher resolution. Conventional protocols for imaging the brain and its arterial supply must be adjusted to profit from these parameters.
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Reliable In-Stent Lumen Visualization With Dual Source CT Coronary AngiographyA 58-year-old man with a history of hypertension and hypercholesterolemia was admitted to the hospital with symptoms of suspected stable angina pectoris. The patient was referred to conventional coronary angiography after a positive exercise-ECG test. Conventional angiography showed significant stenoses at the level of the proximal right coronary artery (RCA) and the proximal left anterior descending coronary artery (LAD). Percutaneous intervention was undertaken and one bare-metal stent in the RCA and two overlapping bare-metal stents in the LAD were successfully implanted. The patient was referred to follow-up CT coronary angiography after 18 months.
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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.
