Abstract:
:Despite the overwhelming prevalence of cholelithiasis, many health care professionals are not familiar with the basic pathophysiology of gallstone formation. This article provides an overview of the biochemical pathways related to bile, with a focus on the physical chemistry of bile. We describe the important factors in bile synthesis and secretion that affect the composition of bile and consequently its liquid state. Within this biochemical background lies the foundation for understanding the clinical and sonographic manifestation of cholelithiasis, including the pathophysiology of cholesterol crystallization, gallbladder sludge, and gallstones. There is a brief discussion of the clinical manifestations of inflammatory and obstructive cholestasis and the impact on bile metabolism and subsequently on liver function tests. Despite being the key modality in diagnosing cholelithiasis, ultrasound has a limited role in the characterization of stone composition.
journal_name
Ultrasound Qjournal_title
Ultrasound quarterlyauthors
Itani M,Dubinsky TJdoi
10.1097/RUQ.0000000000000287subject
Has Abstractpub_date
2017-09-01 00:00:00pages
229-236issue
3eissn
0894-8771issn
1536-0253journal_volume
33pub_type
杂志文章,评审abstract::HDlive (high-definition live or real-time US), a new ultrasound software, combines a movable virtual adjustable light source in a software that calculates the proportion of light reflecting through surface structures, depending on light direction. The light source can be manually positioned to illuminate the desired a...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0b013e31829a582b
更新日期:2013-09-01 00:00:00
abstract::We studied the relationship between breast ultrasound background echotexture (BET) and magnetic resonance imaging (MRI) background parenchymal enhancement (BPE) and whether this relationship varied with hormonal status and amount of fibroglandular tissue (FGT) on MRI. Two hundred eighty-three Korean women (52.1 years;...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000487
更新日期:2020-06-01 00:00:00
abstract::Intraoperative ultrasonography can play a particularly useful role in facilitating surgery or guiding biopsies in the brain and spinal canal. Given the limited access that is frequently afforded to the operating surgeon, coupled with lesions that may be located in deep or seemingly inaccessible locations, sonography p...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/01.ruq.0000263840.92560.72
更新日期:2007-03-01 00:00:00
abstract:INTRODUCTION:Color Doppler ultrasound (CDUS) is currently preferred to screen for renal artery stenosis (RAS); however, a wide range of sensitivities and specificities have been reported. We wanted to identify potential factors contributing to this wide range and to improve CDUS screening for RAS. We noted RAS was over...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0b013e3182817b57
更新日期:2013-03-01 00:00:00
abstract::Breast adenomyoepithelioma is considered as an uncommon breast tumor. It is evaluated as a variant of intraductal papilloma. The treatment of choice is local resection with free margins. It is the first case of breast adenomyoepithelioma reported with conventional ultrasonography, elastography (both free-hand and acou...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000119
更新日期:2015-09-01 00:00:00
abstract::Low dose (<3 mSv) noncontrast CT (NCCT) is the imaging study of choice for accurate evaluation of patients with acute onset of flank pain and suspicion of stone disease (sensitivity 97%, specificity 95%). NCCT can reliably characterize the location and size of an offending ureteral calculus, identify complications, an...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0b013e3182625974
更新日期:2012-09-01 00:00:00
abstract::The sonoelastographic appearances of stones in a phantom were evaluated in this study. Ten stones were embedded into a tissue-mimicking meat phantom. The stone axial (vertical) and transverse (horizontal) dimensions measured by an electronic digital caliper, gray-scale ultrasound, and strain elastography (SE) were com...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000204
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:There have been very few small studies or case reports in the literature considering noninvasive postmortem imaging as supplement to autopsy, especially in fetuses with skeletal dysplasias. Apert syndrome accounts for 4.5% of all patients with craniosynostotic syndromes. It is classically characterized by th...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0b013e3181fe7484
更新日期:2010-12-01 00:00:00
abstract::The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed every two years by a multidisciplinary expert panel. The guideline development and review include an extensive analysis of current medical literature from peer reviewed journals a...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000099
更新日期:2014-12-01 00:00:00
abstract::The Achilles tendon is a frequent site of foot and ankle discomfort. Its superficial location lends it to excellent evaluation by ultrasonography. Continuing advances in US have enabled evaluation of Achilles pathology with unprecedented accuracy and efficiency in a cost-effective manner. For these reasons, radiologis...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0b013e3181b738a6
更新日期:2009-09-01 00:00:00
abstract::Commercial central line vascular access trainers are available but have significant limitations including cost, size, and limited durability when used for the complete procedure. A unique central venous access trainer was constructed using silicone loaf pan, ballistic gel, copper pipe and aluminum rods as vessels cond...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000493
更新日期:2020-09-01 00:00:00
abstract::This study aims to evaluate the value of ultrasonography in the diagnosis, treatment, and follow-up of primary thyroid lymphoma. The clinical data of 12 patients, who were pathologically confirmed with thyroid lymphoma and treated in our hospital, were retrospectively analyzed. Ultrasonography was performed on the thy...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000414
更新日期:2019-09-01 00:00:00
abstract::Ultrasound is considered to be the initial imaging modality of choice for evaluation of bile ducts. In this article, sonographic anatomy of the bile ducts and ultrasound findings in congenital, inflammatory, neoplastic, and other abnormalities of bile ducts are described. Roles of color Doppler ultrasound and newer ap...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/00013644-200209000-00004
更新日期:2002-09-01 00:00:00
abstract::The purpose of this article was to discuss the process of setting up a nuchal translucency (NT) screening clinic in clinical practice, how to interpret the information in combination with other clinical tests, what to do if abnormal results are obtained, and to illustrate some of the fetal anomalies that are associate...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0000000000000161
更新日期:2016-03-01 00:00:00
abstract::The evaluation of the diaphragm in critically ill patients is simple and noninvasive and has shown good repeatability. The aim of the study was to generate a predictive index for successful weaning (ULDIMex) from invasive mechanical ventilation (IMV) based on an ultrasonographic diaphragmatic assessment before perform...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000442
更新日期:2020-03-01 00:00:00
abstract::A 38-week pregnant patient with history of cesarean delivery was admitted to the hospital for induction of labor after diagnosis of fetal demise. When the clinical picture became concerning for uterine scar dehiscence, an ultrasound was ordered. After targeted ultrasound of the lower uterine segment, the sonographer i...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000260
更新日期:2017-03-01 00:00:00
abstract::Tethered spinal cord is associated with closed and open neural tube defects. With prenatal screening, spinal defects are consistently diagnosed during fetal life. We show that the conus medullaris can be seen well with prenatal ultrasound, and the diagnosis of tethered spinal cord can be made during fetal life. In thi...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0b013e3181a32218
更新日期:2009-06-01 00:00:00
abstract::Fungal inflammatory pseudotumor (FIPT) of the liver is a rare disease that may be mistaken for a malignant tumor. It is difficult to diagnose because of its nonspecific clinical and imaging features. We report the case of a 46-year-old Asian man who presented with a mass in the right upper quadrant of the abdomen. The...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000285
更新日期:2017-09-01 00:00:00
abstract::Early and accurate prenatal diagnosis of intrauterine growth restriction is important. Commonly used biometric parameters have limited specificity and require accurate dating. Fetal abdominal wall thickness (AWT) could be a useful supplemental parameter. We performed a retrospective study of 100 third trimester ultras...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000310
更新日期:2017-09-01 00:00:00
abstract::Although there is an increasing use of more imaging modalities in breast imaging, the role of breast sonography has not diminished--in fact, the applications of sonography have increased with the improvement of high-frequency equipment. Compared with other breast imaging modalities, current sonographic equipment has e...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0b013e31816b8cdf
更新日期:2008-03-01 00:00:00
abstract::To test the reliability of CEUS on the diagnosis of acute (AR) or chronic rejection (CR) after renal transplantation, patients who received renal transplantation in our center from January 2011 and December 2015 were retrospectively included in the current study. All the included patients underwent contrast-enhanced u...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000449
更新日期:2020-03-01 00:00:00
abstract::This study was to evaluate the correlation between birth weight and the distance between distal rectal pouch and perineum (P-P distance) and to determine a cutoff value for P-P distance to diagnose low-type imperforate anus in neonates with low-birth weight (LBW).We included 15 neonates with LBW (mean weight, 2012 ± 4...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000329
更新日期:2018-03-01 00:00:00
abstract::Portal venous system evaluation is required in many clinical circumstances, as substantial morbidity and mortality can be associated with a spectrum of portal vein abnormalities. Portal venous system pathologies can be congenital or acquired, and the knowledge of their imaging appearances will allow for a confident di...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0000000000000421
更新日期:2019-12-01 00:00:00
abstract::Ultrasound is the screening method of choice for evaluation of pelvic anatomy and abnormalities of the female pelvis. It allows for detailed assessment of the uterus, endometrium, and ovaries. However, there are times when the sonographic diagnosis is nonspecific. This review article details the use of magnetic resona...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/01.ruq.0000232613.41429.ec
更新日期:2006-09-01 00:00:00
abstract::The use of microbubble contrast greatly enhances the ability of ultrasound to delineate structures and therefore aid in diagnosis. Ultrasound microbubble contrast agents are composed of low-solubility gas encapsulated in a biomaterial shell. These agents use the physics of ultrasound imaging to effectively identify an...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0000000000000182
更新日期:2016-06-01 00:00:00
abstract::The advent of antiangiogenic drugs in cancer therapy necessitates an imaging modality that can longitudinally assess posttreatment changes in tumor vasculature. In this regard, microbubble contrast-enhanced ultrasonography (CEUS) offers several advantages over conventional imaging modalities. The small size of microbu...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/RUQ.0b013e3181bce364
更新日期:2009-12-01 00:00:00
abstract::Congenital heart diseases (CHDs) carry a high prevalence rate in the general population (0.8%-1%). Most fetal CHDs occur in patients without any risk factors. The prenatal recognition of CHD has major impacts on the pregnancy and its outcome. The aforementioned data justify prenatal ultrasound (US) screening of CHD in...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0b013e3182915867
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:Endometrial polyps are localized overgrowth of glands, stroma, and blood vessels and reported in 13% to 50% of women with dysfunctional uterine bleeding. Transvaginal ultrasound (TVUS) is the initial noninvasive modality of choice for the evaluation of endometrial polyps. The addition of intrauterine contras...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/RUQ.0000000000000384
更新日期:2018-12-01 00:00:00
abstract::There are many misconceptions in the field of ultrasonography. Some are because of poor understanding of anatomy and/or embryological or developmental features of certain organs, which have prevailed over the course of the centuries since the discovery of these entities (e.g., column of Bertin and hypertrophic column ...
journal_title:Ultrasound quarterly
pub_type: 杂志文章
doi:10.1097/00013644-200109000-00002
更新日期:2001-09-01 00:00:00
abstract::Ultrasound plays an important role in the diagnostic workup of scrotal diseases. It can differentiate a testicular mass from an extratesticular mass and determine whether the mass is cystic, solid, or complex. Using this information a likely diagnosis can be ascertained. In the acute scrotum, acute epididymitis/epidid...
journal_title:Ultrasound quarterly
pub_type: 杂志文章,评审
doi:10.1097/00013644-200412000-00004
更新日期:2004-12-01 00:00:00