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Clinical Imaging | Page 2

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https://read.qxmd.com/read/31220677/prognostic-value-of-adc-measurements-in-predicting-overall-survival-in-patients-undergoing-90-y-radioembolization-for-colorectal-cancer-liver-metastases
#21
Deniz Alis, Emine Sebnem Memis Durmaz, Fatih Gulsen, Ahmet Bas, Levent Kabasakal, Sait Sager, Furuzan Numan
AIM: To assess the ability of diffusion-weighted imaging (DWI) in predicting the overall survival in patients who underwent Yttrium 90 radioembolization (90 Y-RE) for colorectal liver metastases (CLM) with other well-established clinical and imaging parameters by comparing the pre- and post-treatment apparent diffusion coefficient (ADC) values of the lesions. METHODS: A total of 81 metastatic lesions of 27 consecutive patients who underwent DWI before and after the 90 Y-RE session were enrolled in the study...
May 29, 2019: Clinical Imaging
https://read.qxmd.com/read/31212220/imaging-features-of-unusual-lesions-and-complications-associated-with-ovarian-mature-cystic-teratoma
#22
REVIEW
Sitthipong Srisajjakul, Patcharin Prapaisilp, Sirikan Bangchokdee
Mature cystic teratoma (MCT) is a common neoplasm of the ovary that typically contains mature tissues of ectodermal, mesodermal, and endodermal origin. This tumor tends to affect younger women, its presentation ranges from pure cystic mass to complex solid cystic mass, and the detection of intratumoral fat component is the key diagnostic imaging feature. MCT can be associated with various complications and it demonstrates a wide spectrum of imaging findings. Associated complications include rupture, torsion, malignant transformation, and gliomatosis peritonei...
May 28, 2019: Clinical Imaging
https://read.qxmd.com/read/31238185/lateral-ectopic-thyroid-mimics-carotid-body-tumor-on-indium-111-pentetreotide-scintigraphy
#23
Prem P Batchala, Anthony Dyer, Sugoto Mukherjee, Patrice K Rehm
A 34-year old woman with past history of anxiety, depression, and hypothyroidism resulting from prior total thyroidectomy for multinodular goiter presented with complaints of palpitations, sweating, and tachycardia. Clinical examination revealed a painless right lateral neck mass. USG/CT of the neck revealed the soft tissue mass located at the right carotid bifurcation. A subsequent Indium-111 pentetreotide somatostatin receptor scintigraphy (SRS) demonstrated tracer uptake in the mass. Hence, secretory carotid body tumor/paraganglioma was strongly suspected...
May 25, 2019: Clinical Imaging
https://read.qxmd.com/read/31170598/anomalies-of-coronary-artery-origin-evaluation-on-multidetector-ct-angiography
#24
REVIEW
Niraj Nirmal Pandey, Mumun Sinha, Arun Sharma, Rengarajan Rajagopal, Kanika Bhambri, Sanjeev Kumar
Anomalies of origin of coronary arteries are an uncommon occurrence and found in approximately 1-2% of the general population. While a large proportion of these anomalies are clinically silent, a few might be hemodynamically significant and may even result in sudden cardiac death. Comprehensive knowledge of the normal as well as variant anatomies of the coronary artery origin and familiarity with imaging appearances and clinical significance of these anomalies is imperative for precise diagnosis and subsequent planning of treatment, whenever required...
May 23, 2019: Clinical Imaging
https://read.qxmd.com/read/31163294/curbside-consults-practices-pitfalls-and-legal-issues
#25
Sowmya Mahalingam, Nitya M Bhalla, Jonathan L Mezrich
OBJECTIVE: "Curbside consults" are informal opinions provided by one physician to another. In radiology, it often refers to opinions rendered on imaging performed at outside facilities and has evolved from being a targeted response to a discrete clinical question to a complete over-read in recent years. Given that the consults are usually sought for patients with complex conditions, the potential for error increases with informal reads, often due to the time constraint and lack of adequate information...
May 21, 2019: Clinical Imaging
https://read.qxmd.com/read/31136882/comparison-of-whole-brain-segmentation-and-volume-estimation-in-children-and-young-adults-using-spm-and-symri
#26
Suraj D Serai, Jonathan Dudley, James L Leach
BACKGROUND: MRI brain segmentation and volume estimation of gray matter (GM), white matter (WM) and cerebrospinal fluid (CSF) are important for many neurological applications. Signal intensity based measurements, such as the current statistical parametric mapping (SPM) based volume estimation techniques rely on T1W images that involve a series of pre-processing steps, making it impractical for clinical use. PURPOSE: In this study, we compared Synthetic MRI (SyMRI) generated relaxometry maps based brain segmentation and estimation of brain volumes with SPM image intensity based segmentation and volume estimation in children and young adults...
May 21, 2019: Clinical Imaging
https://read.qxmd.com/read/31129392/magnetic-resonance-imaging-in-myelopathy-a-pictorial-review
#27
REVIEW
Nicolae Sarbu, Valentina Lolli, James G Smirniotopoulos
Myelopathies have multiple causes and broad differential diagnoses, including demyelinating, metabolic, vascular and neoplastic disorders, often with distinctive imaging manifestations. Compressive myelopathy, especially of degenerative and neoplastic origin, is the most common cause of myelopathy, followed by inflammatory disorders such as multiple sclerosis, acute disseminating encephalomyelitis, neuromyelitis optica, and transverse myelitis of other etiologies. An accurate and early diagnosis will guide the treatment and will provide information about the prognosis of the patient...
May 17, 2019: Clinical Imaging
https://read.qxmd.com/read/31129391/do-benign-concordant-breast-mri-biopsy-results-require-short-interval-follow-up-imaging-report-of-longitudinal-study-and-review-of-the-literature
#28
David M Pinkney, Sona A Chikarmane, Catherine S Giess
OBJECTIVE: The objectives of this study were to examine the frequency and outcomes of short interval imaging follow up of benign, concordant breast MRI biopsies and review the published literature on this topic. MATERIALS AND METHODS: This was an IRB-approved, HIPAA compliant retrospective review of women undergoing MRI-guided breast biopsies between October 1, 2008 and December 31, 2014. Patients with malignant or high risk lesions with recommendation for excision, discordant cases, and those undergoing breast conservation therapy in same quadrant, chemotherapy or mastectomy were excluded...
May 16, 2019: Clinical Imaging
https://read.qxmd.com/read/31212062/reliability-of-magnetic-resonance-imaging-in-diagnosis-and-assessment-the-depth-of-invasion-of-placental-accreta-in-high-risk-gravid-women
#29
Lamiaa M R Khalaf, Hazem Abou Zeid, Essam Rashad Othman
OBJECTIVES: To evaluate sensitivity, specificity and accuracy of Magnetic Resonance Imaging (MRI) in diagnosis and assessment the depth of invasion of placenta accreta (PA) in high risk gravid women. MATERIALS & METHODS: The study included 58 pregnant women with multiple risk factors for PA. Placental mapping by ultrasound was followed by MRI when the patients were diagnosed or suspicious by ultrasound to have PA. Focal myometrial interruption, dark intra-placental band, heterogeneous placenta, focal uterine bulge and invasion to the surrounding organs were used as a sign of diagnosis of PA...
May 15, 2019: Clinical Imaging
https://read.qxmd.com/read/31136881/morphologic-and-functional-evaluation-of-duplicated-renal-collecting-systems-with-mr-urography-a-descriptive-analysis
#30
Juan S Calle-Toro, Carolina L Maya, Sally Emad-Eldin, Melkamu D Adeb, Susan J Back, Kassa Darge, Hansel J Otero
PURPOSE: To describe the morphology and function of duplicated collecting systems in pediatric patients undergoing functional MR urography (fMRU). METHODS: This is a HIPAA compliant IRB approved retrospective study of all patients with duplicated renal collecting systems undergoing fMRU at our institution between 2010 and 2017. Two pediatric radiologists evaluated the studies to determine the presence, morphology and function of duplicated collecting systems using both T2-weighted and dynamic post-contrast fat saturated T1-weighted images...
May 15, 2019: Clinical Imaging
https://read.qxmd.com/read/31128385/mri-predictors-of-tumor-positive-margins-after-breast-conserving-surgery
#31
Manisha Bahl, Jay A Baker, Emily N Kinsey, Sujata V Ghate
PURPOSE: The purpose of this study is to identify predictors of tumor-positive surgical margins after breast-conserving surgery on dynamic contrast-enhanced (DCE) MRI. MATERIALS AND METHODS: We conducted a retrospective study of consecutive women who underwent DCE MRI before breast-conserving surgery from 2005 to 2014. Patient demographics, indication for surgery, MRI findings, biopsy pathology results, and surgical outcomes were reviewed. The unpaired t-test and chi-square test were used to compare the positive and negative margins groups...
May 15, 2019: Clinical Imaging
https://read.qxmd.com/read/31203047/mr-imaging-of-the-shoulder-in-youth-baseball-players-anatomy-pathophysiology-and-treatment
#32
REVIEW
Julien T Aoyama, Pia Maier, Sabah Servaes, Suraj D Serai, Theodore J Ganley, Hollis G Potter, Jie C Nguyen
With an increasing participation in youth sports and a growing popularity of overhead sports, shoulder pain and injuries are common in pediatric baseball players. In contrast to traumatic and collision injuries, which are more frequent with high-impact sports, many of the shoulder injuries are the result of repetitive overuse. Undiagnosed and untreated injury to the growth plates of skeletally immature athletes can lead to remodeling, which can negatively impact the biomechanics of the shoulder and produce long-term morbidity...
May 14, 2019: Clinical Imaging
https://read.qxmd.com/read/31103908/propensity-matched-comparison-of-transjugular-intrahepatic-portosystemic-shunt-placement-techniques-intracardiac-echocardiography-ice-versus-fluoroscopic-guidance
#33
Raja Siva Ramaswamy, Resmi Charalel, Carlos J Guevara, Tatulya Tiwari, Olaguoke Akinwande, Seung K Kim, Amber Salter, Michael Darcy, Christopher D Malone
PURPOSE: To compare procedure characteristics and outcomes when TIPS is performed under intracardiac echocardiography guidance (iTIPS) compared to conventional fluoroscopic guidance (cTIPS). MATERIALS AND METHODS: A retrospective propensity-matched study of 30 iTIPS and 30 cTIPS procedures from January 2014 to March 2017 at a single US high volume academic medical center was performed. iTIPS and cTIPS cases were propensity score matched using predictive variables: age, race, gender, etiology of liver disease, indication for TIPS, MELD score, and portal vein patency...
May 11, 2019: Clinical Imaging
https://read.qxmd.com/read/31102780/factors-influencing-selection-of-an-interventional-radiology-training-program
#34
Raja S Ramaswamy, Daniel Fung, Tatulya Tiwari, Gretchen Foltz, Olaguoke Akinwande, Mahati Mokkarala, Seung Kim, Christopher Malone
PURPOSE: To understand factors influencing the choice and ranking of Interventional Radiology (IR) training programs among a cohort of medical students and diagnostic radiology residents pursuing careers in IR. MATERIALS AND METHODS: An IRB approved, 34 question online survey (surveymonkey.com) evaluated the impact of twenty-two different factors and demographics on IR training program selection for medical students and residents. The factors analyzed included programmatic features, location characteristics, academic reputation, program size, benefits/financial incentives, emphasis on clinical care, and future job opportunities...
May 11, 2019: Clinical Imaging
https://read.qxmd.com/read/31102777/ct-bone-density-analysis-of-low-impact-proximal-femur-fractures-using-hounsfield-units
#35
Anish Narayanan, Anthony Cai, Yin Xi, Naim M Maalouf, Craig Rubin, Avneesh Chhabra
AIM: To quantify and compare changes in bone mineral density (BMD) via CT analysis in patients with and without spontaneous femoral fractures. MATERIALS AND METHODS: Consecutive series of patients with CT imaging for spontaneous femoral fractures were compared to the age and gender matched controls. Bone density fixed region of interest measurements were obtained at the site of the fracture, proximally at the femoral head, and distally at the lesser trochanter in fracture patients and controls...
May 8, 2019: Clinical Imaging
https://read.qxmd.com/read/31078916/predictors-for-basal-ganglia-viability-after-mechanical-thrombectomy-in-proximal-middle-cerebral-artery-occlusion
#36
Marius Georg Kaschner, Raul Lande, Christian Rubbert, Julian Caspers, John-Ih Lee, Michael Gliem, Sebastian Jander, Bernd Turowski
BACKGROUND/PURPOSE: In acute proximal middle cerebral artery (MCA) occlusion covering the lenticulostriate arteries (LSA), ischemic tolerance of basal ganglia is limited due to supposed lack of collateral supply. However, in several patients, basal ganglia (BG) infarction was absent after successful mechanical thrombectomy (MTE). Purpose of our study was to evaluate predictors for BG viability in stroke patients despite prolonged MCA mainstem occlusion. MATERIAL/METHODS: We retrospectively reviewed all stroke patients from our local registry with MCA mainstem occlusion after mechanical thrombectomy between November 2009 and October 2016...
May 2, 2019: Clinical Imaging
https://read.qxmd.com/read/31078917/coronary-plaque-composition-assessed-by-cardiac-computed-tomography-using-adaptive-hounsfield-unit-thresholds
#37
Martina Chantal de Knegt, Morten Haugen, Andreas Kryger Jensen, Jesper James Linde, Jørgen Tobias Kühl, Jens Dahlgaard Hove, Klaus Fuglsang Kofoed
PURPOSE: Quantitative computed tomography (QCT) may be useful in detecting high-risk patients with coronary atherosclerosis. Assessment of plaque composition using fixed Hounsfield unit (HU) thresholds is influenced by luminal contrast density. A method using adaptive HU thresholds has therefore been developed. This study investigates agreement between plaque volumes derived using fixed and adaptive HU thresholds and the influence of luminal contrast density on the determination of plaque composition...
April 25, 2019: Clinical Imaging
https://read.qxmd.com/read/31102779/unilateral-cervical-and-petrosal-segment-agenesis-of-the-internal-carotid-artery-with-rete-mirabile
#38
Yasar Turk, Banu Alicioglu
The carotid rete mirabile (RM) is a physiological network between the internal and external carotid arterial systems. In this paper, an extremely rare case is presented, in which internal-external carotid artery anastomoses and a dilated ascending pharyngeal artery, due to unilateral agenesis of the cervical and petrous segments of the internal carotid artery (ICA), is presented.
April 23, 2019: Clinical Imaging
https://read.qxmd.com/read/31102778/role-of-cone-beam-ct-augmented-by-navigational-software-in-the-single-session-management-of-gastrointestinal-hemorrhage-and-infected-deep-postoperative-fluid-collections
#39
Joshua Cornman-Homonoff, David C Madoff
Utilization of cone-beam CT with navigational software augmentation allows performance of both vascular and nonvascular interventions in a traditional fluoroscopy suite without need for additional hardware. The improvements in target identification and procedure time associated with use of these technologies suggest that they may be particularly beneficial in emergent settings where decreased procedure time correlates with improved outcomes. We illustrate these potential advantages through the successful single-session management of a clinically unstable patient with both gastrointestinal (GI) hemorrhage and infected postoperative fluid collections...
April 23, 2019: Clinical Imaging
https://read.qxmd.com/read/31029011/the-clincoradiologic-spectrum-of-notochordal-derived-masses
#40
REVIEW
Samia K Sayyid, Philip K Wong, William Read, David K Monson, Monica Umpierrez, Felix Gonzalez, Aparna Kakarala, Adam D Singer
The notochord is an essential part of human development that regresses with age. Masses derived from notochordal tissue may be encountered during imaging of the neuroaxis. Fortunately, the majority of these are benign and can usually be differentiated by radiological and clinical findings. In this manuscript, we discuss the clinical and radiologic presentation of the four notochordal derived masses and present a brief overview of their management.
April 18, 2019: Clinical Imaging
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