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Rick Brandsma, Tjitske F Lawerman, Marieke J Kuiper, Roelineke J Lunsing, Huibert Burger, Deborah A Sival
AIM: To determine whether ataxia rating scales are reliable disease biomarkers for early onset ataxia (EOA). METHOD: In 40 patients clinically identified with EOA (28 males, 12 females; mean age 15y 3mo [range 5-34y]), we determined interobserver and intraobserver agreement (interclass correlation coefficient [ICC]) and discriminant validity of ataxia rating scales (International Cooperative Ataxia Rating Scale [ICARS], Scale for Assessment and Rating of Ataxia [SARA], and Brief Ataxia Rating Scale [BARS])...
October 21, 2016: Developmental Medicine and Child Neurology
Jeremiah T Lowe, Edward J Testa, Xinning Li, Suzanne Miller, Joseph P DeAngelis, Andrew Jawa
BACKGROUND: Computed tomography (CT) scan is the standard for the preoperative assessment of glenoid version and morphology before total shoulder arthroplasty. However, the capacity of magnetic resonance imaging (MRI) to visualize bone morphology has improved with advancing technology. The purpose of this study was to compare the accuracy of MRI to CT for assessment of glenoid version and Walch classification. METHODS: Three fellowship-trained shoulder surgeons assessed glenoid version and Walch classification of 30 patients with primary shoulder osteoarthritis who received both CT and MRI scans before total shoulder arthroplasty...
October 17, 2016: Journal of Shoulder and Elbow Surgery
Jun Zhang, Xin Ran Ji, Ye Peng, Jian Tao Li, Li Hai Zhang, Pei Fu Tang
BACKGROUND: A die-punch fracture is a depression fracture of the lunate fossa of the distal radius. We propose a morphological classification of die-punch fractures that includes five types: center depression fractures, vertical depression fractures, volar depression fractures, dorsal depression fractures, and double die-punch fractures. METHODS: The radiographs of 112 die-punch fractures treated between January 2005 and January 2015 were retrospectively reviewed...
October 21, 2016: Journal of Orthopaedic Surgery and Research
Nam-Su Chung, Chang-Hoon Jeon, Han-Dong Lee, Suk-Hyeong Won
STUDY DESIGN: This was a radiographic validity and reliability study. OBJECTIVE: We assessed the validity and reliability of measurements made on standing lateral lumbar radiographs, compared with lateral whole-spine radiographs, for evaluating spinopelvic parameters and lumbar lordosis (LL). SUMMARY OF BACKGROUND DATA: A lateral whole-spine radiograph is the gold standard image for measurement of spinopelvic parameters. However, little evidence is available on the reliability of measurements made on such radiograph...
October 19, 2016: Clinical Spine Surgery
Gang Wu, Jun Yang, Tianjing Zhang, John N Morelli, Shivraman Giri, Xiaoming Li, Wenlin Tang
BACKGROUND: The high incidence of renal insufficiency in patients with Peripheral Arterial Disease raises the concern for nephrogenic systemic fibrosis (NSF) with respect to contrast enhanced MRA. The risk of NSF is eliminated with non-contrast enhanced magnetic resonance angiography. The purpose of the current study is to compare image quality and diagnostic performance of non-contrast enhanced Quiescent Interval Single Shot (QISS) magnetic resonance angiography at 3 T versus CT angiography for evaluation of lower extremity Peripheral Arterial Disease (PAD)...
October 20, 2016: Journal of Cardiovascular Magnetic Resonance
Saulo de Tarso de Sá Pereira Segundo, Edgar Santiago Valesin, Mario Lenza, Durval do Carmo Barros Santos, Laercio Alberto Rosemberg, Mario Ferretti
Objective: To measure the interobserver reproducibility of the radiographic evaluation of lumbar spine instability. Methods: Measurements of the dynamic radiographs of the lumbar spine in lateral view were performed, evaluating the anterior translation and the angulation among the vertebral bodies. The tests were evaluated at workstations of the organization, through the Carestream Health Vue RIS (PACS), version Inc. 2009© system. Results: Agreement in detecting cases of radiographic instability among the observers varied from 88...
July 2016: Einstein
Osman Melih Topcuoğlu, Muşturay Karçaaltıncaba, Deniz Akata, Mustafa Nasuh Özmen
PURPOSE: We aimed to determine the intra- and interobserver agreement on the software analysis of very low dose hepatic perfusion CT (pCT). METHODS: A total of 53 pCT examinations were obtained from 21 patients (16 men, 5 women; mean age, 60.4 years) with proven liver metastasis from various primary cancers. The pCT examinations were analyzed by two readers independently and perfusion parameters were noted for whole liver, whole metastasis, metastasis wall, and normal-looking liver (liver tissue without metastasis) in regions of interest (ROIs)...
October 19, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
Akitoshi Inoue, Shinichi Ohta, Norihisa Nitta, Masahiro Yoshimura, Tomoharu Shimizu, Masaji Tani, Ryoji Kushima, Kiyoshi Murata
PURPOSE: To evaluate the feasibility of assessing advanced T-stage (T3-T4) colorectal carcinomas by correlating MRI with histopathological findings. MATERIALS AND METHODS: The study population comprised 31 patients with 32 lesions (22 colon and 10 rectal carcinomas). The relationship between the tumor and bowel layers on T2- and contrast-enhanced T1-weighted images (T2WI, CE-T1WI), bowel wall deformity, and the linear architecture of subserosal fat on T2WI scans was independently assessed by two radiologists...
October 18, 2016: Japanese Journal of Radiology
Kelechi R Okoroha, Nima Mehran, Jonathan Duncan, Travis Washington, Tyler Spiering, Michael J Bey, Marnix Van Holsbeeck, Vasilios Moutzouros
Ultrasound and magnetic resonance imaging (MRI) are both capable of diagnosing full-thickness rotator cuff tears. However, it is unknown which imaging modality is more accurate and precise in evaluating the characteristics of full-thickness rotator cuff tears in a surgical population. This study reviewed 114 patients who underwent arthroscopic repair of a full-thickness rotator cuff tear over a 1-year period. Of these patients, 61 had both preoperative MRI and ultrasound for review. Three musculoskeletal radiologists evaluated each ultrasound and MRI in a randomized and blinded fashion on 2 separate occasions...
October 18, 2016: Orthopedics
Kevin Wong, Jessica R Levi
OBJECTIVES/HYPOTHESIS: Evaluate the readability of pediatric otolaryngology-related patient education materials from leading online sources. STUDY DESIGN: Cross-sectional analysis. METHODS: All pediatric otolaryngology-related articles from the online patient health libraries of the top 10 US News & World Report-ranked children's hospitals, top 5 Doximity-ranked pediatric otolaryngology fellowships, and the American Academy of Otolaryngology-Head and Neck Surgery were collected...
October 18, 2016: Laryngoscope
Kaname Uno, Katsunori Iijima, Yasuhiko Abe, Tomoyuki Koike, Yasushi Takahashi, Nobuyuki Ara, Tooru Shimosegawa
PURPOSE: Endoscopic diagnosis of gastric cancer (GC) that emerges after eradication of Helicobacter pylori may be affected by unique morphological changes. Using comprehensive endoscopic imaging, which can reveal biological alterations in gastric mucosa after eradication, previous studies demonstrated that Congo red chromoendoscopy (CRE) might clearly show an acid non-secretory area (ANA) with malignant potential, while autofluorescence imaging (AFI) without drug injection or dyeing may achieve early detection or prediction of GC...
September 2016: Journal of Gastric Cancer
Douglas K Rex, Prasanna Ponugoti, Charles Kahi
BACKGROUND: Classification schemes for differentiation of conventional colorectal adenomas from serrated lesions rely on patterns of blood vessels and pits. Morphologic features have not been validated as predictors of histology. AIM: Describe the prevalence of the "valley sign" and validate it as a marker of conventional adenomas METHODS: Three experts judged the prevalence of the valley sign in 301 consecutive small adenomas. Medical students were taught to recognize the valley and tested on their recognition of the valley sign...
October 14, 2016: Gastrointestinal Endoscopy
Matthias Eckert, Philipp Gölitz, Hannes Lücking, Tobias Struffert, Frauke Knossalla, Arnd Doerfler
BACKGROUND: Using flat-detector CT (FD-CT) for stroke imaging has the advantage that both diagnostic imaging and endovascular therapy can be performed directly within the Angio Suite without any patient transfer and time delay. Thus, stroke management could be speeded up significantly, and patient outcome might be improved. But as precondition for using FD-CT as primary imaging modality, a reliable exclusion of intracranial hemorrhage (ICH) has to be possible. This study aimed to investigate whether optimized native FD-CT, using a newly implemented reconstruction algorithm, may reliably detect ICH in stroke patients...
October 18, 2016: Cerebrovascular Diseases
Koray Gumus, Aysegul Guven, Miray Altnkaynak, Merve Keskin
OBJECTIVES: The aim of this study was to compare different measurement tools and parameters, including a new computer-assisted image processing technique for the quantitative analysis of the percentage of pterygium on the corneal surface, horizontal/vertical lengths obtained using slitlamp beam and surgical compass. METHODS: A total of 21 pterygia of 17 patients were included in the study. The pterygia were measured by three different methods: a slitlamp beam, a surgical compass, and a new computer-assisted image processing method...
September 30, 2016: Eye & Contact Lens
Kirsten W Slagter, Gerry M Raghoebar, Arjan Vissink, Henny J A Meijer
BACKGROUND: Sufficient buccal bone is important for optimal esthetic results of implant treatment in the anterior region. It can be measured with cone beam computed tomography (CBCT), but background scattering and problems with standardization of the measurements are encountered. The aim was to develop a method for reliable, reproducible measurements on CBCTs. METHODS: Using a new method, buccal bone thickness was measured on ten CBCTs at six positions along the implant axis...
December 2015: Int J Implant Dent
Sangyun Lee, Heejin Kwon, Jihan Cho
RATIONALE AND OBJECTIVES: To investigate image quality characteristics of abdominal computed tomography (CT) scans reconstructed with adaptive statistical iterative reconstruction V (ASIR-V) vs currently using applied adaptive statistical iterative reconstruction (ASIR). MATERIALS AND METHOD: This institutional review board-approved study included 35 consecutive patients who underwent CT of the abdomen. Among these 35 patients, 27 with focal liver lesions underwent abdomen CT with a 128-slice multidetector unit using the following parameters: fixed noise index of 30, 1...
October 10, 2016: Academic Radiology
Andrew J Wyman, Bruce N Mayes, Jackeline Hernandez-Nino, Nigel Rozario, Sandra K Beverly, Andrew W Asimos
STUDY OBJECTIVE: Seizures account for 1.2% of all emergency department (ED) visits, with 24% of those representing first-time seizures. Our primary goal is to determine whether obtaining an electroencephalogram (EEG) in the ED after a first-time seizure can identify individuals appropriate for initiation of anticonvulsant therapy on ED discharge. Our secondary goals are to determine the association of historical and clinical seizure features with epileptic EEGs and to determine the interobserver agreement for the EEG interpretation...
October 10, 2016: Annals of Emergency Medicine
Paige A Culotta, James E Crowe, Quynh-Anh Tran, Jeremy Y Jones, Amy R Mehollin-Ray, H Brandon Tran, Marcella Donaruma-Kwoh, Cristina T Dodge, Elizabeth A Camp, Andrea T Cruz
BACKGROUND: Young children with suspected abusive head trauma often receive skull radiographs to evaluate for fractures as well as computed tomography (CT) of the head to assess for intracranial injury. Using a CT as the primary modality to evaluate both fracture and intracranial injury could reduce exposure to radiation without sacrificing performance. OBJECTIVE: To evaluate the sensitivity of CT head with (3-D) reconstruction compared to skull radiographs to identify skull fractures in children with suspected abusive head trauma...
October 15, 2016: Pediatric Radiology
Tomoko Negishi, Kazuaki Negishi, Paaladinesh Thavendiranathan, Goo-Yeong Cho, Bogdan A Popescu, Dragos Vinereanu, Koji Kurosawa, Martin Penicka, Thomas H Marwick
OBJECTIVES: This study sought to show the degree to which experience and training affect the precision and validity of global longitudinal strain (GLS) measurement and to evaluate the variability of strain measurement after feedback. BACKGROUND: The application of GLS for the detection of subclinical dysfunction has been recommended in an expert consensus document and is being used with increasing frequency. The role of experience in the precision and validity of GLS measurement is unknown, as is the efficacy of training...
October 6, 2016: JACC. Cardiovascular Imaging
Chuan-Han Chen, Jeon-Hor Chen, Hung-Chieh Chen, Jyh-Wen Chai, Po-Lin Chen, Clayton Chi-Cheng Chen
BACKGROUND: Diagnosis of spontaneous intracranial hypotension (SIH) relies on the ability of medical staff to recognize cerebrospinal fluid (CSF) leakage at the spine. However, difficulties with interobserver discrepancy sometimes occurred while reading magnetic resonance myelography (MRM) because clear image definition was lacking. In this study, we tried to determine which pattern of CSF distribution is more reliable for diagnosis of CSF leakage by using MRM. METHODS: From January 2012 to August 2014, 19 SIH patients and 27 healthy controls (HC) were recruited into our study; 10 of the 19 patients were recovered (SIH-R) after treatment...
October 12, 2016: Journal of the Chinese Medical Association: JCMA
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