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Search Results: 1 - 10 of 1871 matches for " ultrasonography "
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Power Doppler Vocal Fremitus Breast Sonography: Differential Diagnosis with a New Classification Scheme—Power Doppler Vocal Fremitus Examination of Breast Lesions  [PDF]
Duzgun Yildirim, Bengi Gurses, Baki Ekci, Ahmet Kaur
Journal of Cancer Therapy (JCT) , 2011, DOI: 10.4236/jct.2011.22031
Abstract: Purpose: In this study, unlike the previous studies, and Power Doppler vocal fremitus test (PDVFT) is utilized and is evaluated in subcategories to assess its role in the differentiation of benign and malignant lesions. Materials and Methods Thorough the 161 lesions of 147 patients are included in this prospective study. During PDVFT, it is determined that eight different fremitus patterns have broken out according to the colour aliasing during patient’s vocal phonation. It is also grouped as, according to the lesion color aliasing pattern during vibration: (c) for central, (p) for peripheral, (d) for perilesional-desmoplastic, (e) for eccentric, (h) for heterogenous-hierarchic, (s) for septal, (t) for total, (z) for absent-zero. Thereafter, the patterns and histopathological results of the lesions are correlated and analysed statistically. Results Out of 161 lesions, (benign: 133 and malignant, 28 cases) totally 189 patterns are encountered. None of the patterns z, t, s or e was detected in any of the malignant lesions. Specific values for different patterns have been obtained which changing between 29% and 100%. After adding the PDVFT finding, the newly generated BIRADS scheme has the accuracy value as high 91%. Conclusion When it is classified according to the colour aliasing pattern(s) of lesion in PDVFT; the “p” pattern is seen about the same ratio in both malign lesion and benign lesion (nonspecific patterns); “c, d, h” patterns mostly related with malignancy, whereas “e, s, t, z” patterns related with benignity. With adding the PDVFT findings; accuracy of well known BIRADS categorization and lesion demarcation were also improved successfully.
Análise evolutiva e perspectiva histórica da ultra-sonografia intra-operatória (USIO) nas afec??es pancreáticas
Machado, Márcio Martins;Rosa, Ana Cláudia Ferreira;Barros, Nestor de;Herman, Paulo;Pugliese, Vincenzo;Machado, Marcel C.C.;Cerri, Luciana Mendes de Oliveira;Azeredo, Letícia Martins;Cerri, Giovanni Guido;
Radiologia Brasileira , 2003, DOI: 10.1590/S0100-39842003000100010
Abstract: intraoperative ultrasonography influences surgical strategy in a significant number of patients operated due to benign or malignant conditions, and is the most sensitive technique for the detection of small lesions, particularly in the liver and in the pancreas. in pancreatic surgery, intraoperative ultrasonography is helpful in the localization of islet cell tumors and in the assessment of the resectability of adenocarcinomas. the technique may also play a role in chronic pancreatitis surgery. the authors present an up-to-date review of the evolution of intraoperative ultrasonography in pancreatic surgery.
Avalia??o dos insulinomas pela ultra-sonografia intra-operatória: estado atual do tema
Rosa, Ana Cláudia Ferreira;Machado, Márcio Martins;Lemes, Marcella Stival;Barreto, Mariana Caetano;Nunes, Rodrigo Alvarenga;Barros, Nestor de;Mota, Orlando Milhomem da;Silva, Osterno Queiroz da;Benevides, Jales;Barreto, Paulo Adriano;Cerri, Giovanni Guido;
Radiologia Brasileira , 2006, DOI: 10.1590/S0100-39842006000500012
Abstract: the authors review the literature about intraoperative ultrasonography for evaluation of pancreatic insulinomas. results of intraoperative ultrasound, preoperative ultrasound and computed tomography are discussed, as well as results of inspection and palpation of the pancreas during surgery, reported in the literature.
Sonographically guided lymph node biopsy: Complication rates  [PDF]
Michael Mueller, Genia Wittich, Suemeyra Oeztuerk, Wolfgang Kratzer, Mark Martin Haenle, Richard Andrew Mason
Open Journal of Clinical Diagnostics (OJCD) , 2012, DOI: 10.4236/ojcd.2012.22006
Abstract: Purpose: The study investigated the rate of complications associated with sonographically guided lymph node biopsies and assessed potential risk factors. Methods: A total of 536 sonographically guided puncture procedures (283 males, 52.8%; 253 females, 47.2%; average age 57.0 ± 16.0 years; range 14 - 87 years) were performed in 469 patients for the work-up of unclear lymphadenopathy. Events, complications and potential risk factors, were prospectively documented. Results: The 469 patients underwent a total of 536 puncture procedures (PP) including 663 punctures and 1485 passes. Lymph node localizations were intraabdominal (55.2%, n = 296), cervical (22.4%, n = 120), inguinal (12.9%, n = 69), axillary (7.8%, n = 42) and other (1.7%, n = 9). No complications were documented during the entire study period. There was no increased risk of complications documented for the potential risk factors number of punctures, the number of passes, the localization, diameter of the lymph node (s), puncture technique, needle gauge, as well as patients’ sex, age and coagulation parameters, and the experience of the examiner. Conclusions: Our findings confirm the safety of percutaneous sonographically guided lymph node biopsies in different regions of the body in patients with adequate coagulation parameters undergoing pre-interventional color Doppler ultrasound examination.
Nonpalpable Testicular Masses—Should We Be Worried?  [PDF]
Hamid Abboudi, Sachin Malde, Ahmad Mchaourab, Ben Eddy, Nitin Shrotri
Open Journal of Urology (OJU) , 2013, DOI: 10.4236/oju.2013.37053

Objective: To report our experience of a contemporary series of patients who underwent radical orchidectomy for non-palpable testicular masses, in order to comment on their malignant potential and identify any factors predictive of a malignant outcome. Materials and Methods: We reviewed the case-notes of patients who underwent radical inguinal orchidectomy over a 22-month period between January 2010 and October 2011. Results: A total of 71 patients were analysed, with a mean (range) age of 45 years (17 - 82). Overall, 41 (57.7%) orchidectomies were malignant and 30 (42.3%) were benign. There were 20 (28%) non-palpable testicular masses found incidentally on ultrasound, and of these 40% were malignant and 60% were benign. In total 6 of these non-palpable lesions were <1 cm in size, and of these 66.6% were malignant and 33.3% were benign. The majority of tumours were in patients under the age of 50, but there was no correlation between the lesion size and the risk of a malignant outcome. Conclusion: In view of the significant rate of malignancy in non-palpable testicular masses we recommend surgical intervention over surveillance alone. However, as the majority of these lesions may eventually turn out to be benign, we suggest that testis-sparing surgery is the optimal approach, and should be performed in centres where the required radiological, histopathological, and surgical expertise exists.

Evaluation of Positive Predictive Value for Digital Panoramic Radiography in Comparison to Ultrasound in the Diagnosis of Calcified Carotid Atheroma  [PDF]
Fatemeh Ezoddini-Ardakani, Maryam Mirzaei, Saman Nayer, Sajad Besharati, Malihe Moeini
Health (Health) , 2014, DOI: 10.4236/health.2014.615226
Abstract: Aim: Detection of calcified carotid atheroma (CCA) has an important role in reducing the incidence of Cerebro Vascular Accident (CVA). The aim of this study was to evaluate efficacy of panoramic digital radiography in detecting atherosclerosis. Methods: It is descriptive-analytical diagnostic study. The people (22 to 62 years old) were referred to a radiology clinic to perform panoramic radiography for diagnosis of CCA. Individuals who were suspected were introduced to the radiology department of dental school to undergo ultrasound evaluation to CCA. For the 41 patients (55 sides), ultrasound was performed. For data analysis, the Chi-square and Fisher's exact test were used. Results: The prevalence of CCA was 2.43%. The PPV of digital panoramic was 45.5%. There was no significant relationship between age (P = 0.14) and sex (P = 0.539) and PPV of digital panoramic. The PPV of digital panoramic was significantly associated with hypertension (P = 0.032). Conclusion: It seems that panoramic can be used to screen patients with a history of hypertension for atherosclerosis.
Accuracy of Ultrasound to Determine Gestational Age in Third Trimester  [PDF]
Hebah A. Falatah, Ibrahim A. Awad, Hanan Y. Abbas, Maway A. Khafaji, Khalid G. H. Alsafi, Saddig D. Jastaniah
Open Journal of Medical Imaging (OJMI) , 2014, DOI: 10.4236/ojmi.2014.43018
Abstract: Rapid and accurate determination of gestational age (GA) may be vital to the appropriate care of the critically ill pregnant patient and improve obstetric care through allowing the optimal timing of necessary interventions and the avoidance of unnecessary ones. Ultrasound scans are considered to be the most cost-effective, accurate and safe methods for measurement of various fetal parts in pregnant women. The aim of this research is to explore the accuracy of ultrasound in determining gestational age of fetus in third trimesters. Data collected for all pregnant women referred to the Maternity & Children’s Hospital in Jeddah. Only women with single live fetus were included in this study. Women who participated in the study were selected on following criteria: Regular menstrual cycles, known date of last menstrual period and previous live normal neonates in multipara. All scans were performed by a single ultrasonologist on one ultrasound machine. From collected data, it was found that out of 53 (100%) patients, 44 (84.62%) pregnant woman have different gestational age from US and last menstrual period (LMP). From this study we can conclude that the main method to follow fetus growth in third trimester not biparietal diameter (BPD) measurement only. The BPD in third trimester is not reliable and be useless when the patient pass 30 weeks and the BPD has to be side with other measurements when we take it in later trimesters to emphasize the normal growth of fetus and avoid wrong measurement of ultrasound.
Transvaginal Ultrasonographic Measurement of Lower Uterine Segment in Term Pregnant Patients with Previous Cesarean Section  [PDF]
Anitha Thomas, Grace Rebekah, Reeta Vijayaselvi, Ruby Jose
Open Journal of Obstetrics and Gynecology (OJOG) , 2015, DOI: 10.4236/ojog.2015.511091
Abstract: Background: With an aim to reduce the rates of repeat cesarean section in women with a previous scar, prediction of scar rupture or dehiscence is important. If we could predict the risk of rupture by measuring the scar thickness closer to term, we could pursue a trial of scar safely. Aims: To evaluate the use of ultrasound measured thickness of lower uterine segment as one of the predictors of scar rupture or dehiscence in labour and establish a cut off beyond which trial of labour can be attempted safely. Methodology: 187 randomly selected pregnant women with history of one previous cesarean section in the past who satisfied the inclusion criteria, attending the outpatient clinic over a period of six months, at a tertiary level teaching institution in southern India were selected and counseled to undergo a transvaginal measurement of the scar region. These women were then followed up until delivery and the outcome of trial of scar, successful vaginal delivery, rupture or dehiscence of uterus was analysed in relation to the scar thickness and various other contributing factors. Results: 187 women with history of previous cesarean section, attending the outpatient clinic were randomly chosen to undergo trans vaginal scan at term. 52 underwent elective cesarean section and 135 went through trial of scar. The median cut-off of the lower uterine segment in this study population of 135 was 2.4 mm. The sensitivity was 90.9%, specificity was 43.5%, positive predictive value was 12.5%, and negative predictive value was 98.3% at this cut-off for scar rupture or dehiscence. Conclusions: The lower uterine scar thickness could be a useful tool to predict scar rupture. This could aid in making decisions regarding induction of labour with oxytocin in women with previous cesarean section.
Contribution of the Medical Imaging in Care of Ambiguous Genitalia  [PDF]
Zanga Sore Moussa, Diallo Ousseini, Ouattara Boubakar, Napon Aischa Madina, Bamouni Yomboue Abel, Cisse Rabiou
Open Journal of Radiology (OJRad) , 2018, DOI: 10.4236/ojrad.2018.82014
Abstract: We report a case of ambiguous genitalia in a 15-year-old patient to demonstrate input of medical imaging in the diagnosis and care of this rare congenital deformation. Disorders of sexual differentiation (DSD) have been defined as congenital conditions in which development of chromosome, gonad, or anatomic sex is atypical and that raise an issue in the sex assignment. In lower socioeconomic countries where antenatal diagnosis is almost non-existent, due to lack of technical facilities, their medical and surgical management is hard. The case which we report was investigated by ultrasonography and genitography, which remains primary indications in our context.
Prenatal [Ultrasound] Diagnosis of Cryptorchid Testicles  [PDF]
Adam Moyosore Afodun, Khadijah Kofoworola Quadri, Daniel Ejike Eze, Mario Fernandez Edgar, Azeez Omoniyi Adeoye, Bolaji Philip Kolawole
Open Journal of Urology (OJU) , 2018, DOI: 10.4236/oju.2018.812038
Abstract: The role of ultrasonography as a routine investigative test for diagnosing testicular pathologies (in-utero and postnatally) cannot be overemphasized. Undescended (cryptorchid) testis according to literature is prone to neoplastic transformation. Determination of fetal gender in-utero by ultrasound allows for sex determination albeit; its full ethical implication should be considered. 3D ultrasonography is affordable, ubiquitous, reproducible and ensures rapid evaluation of a wide array of testicular pathologies, early (coincidental) diagnosis is important to avoid complications (such as torsion, bleeding or malignant-mass-formation) thus; sonar imaging features as an indispensable tool. The case aims to document and highlight accidental detection (at 31 weeks gestational age) and expunge on the accuracy of ultrasonography in diagnosing cryptorchidism. There is sparse (Nigerian) literature on Undescended Fetal Testis (UDFT). This report used antenatal imaging as a clear descriptive evidence of faulty testicular descent with detailed examination of the fetal genitalia. Ultrasound examination during the 3rd semester allows for accurate cryptorchid diagnosis (prenataly).
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