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Showing 9 results for Ultrasonography
Volume 2, Issue 2 (6-2002)
Hydatic cyst is caused by Echinococus worm, that involves any part of the body, sometimes it is presented in organs such as thyroid, breast and other organs. Axillary that may be consider adenopathy or metastasis and do biopsy, which so there is danger of leakage, anaphylaxis or relaps.
The reported case was 39 years old female presented with painless axillary mass without inflammation since 19 years ago that slowly enlarged. Physical findings suggested hydatid cyst which was confirmed with ultrasonography and IHA for Echinococus granolosus and other diseases ruled out. She was operated and she had no relapses after 1.5 years follow up.
Gollam Ali Hamedbarghi, Afshin Mohammadi , Abdoll Rasool Safaeian,
Volume 5, Issue 1 (4-2005)
Background & Objectives: Patients in unstable condition with blunt abdominal trauma require rapid evaluation of abdominal organs to assess the need for laparatomy. Ultrasonography is a fast technique which can be used in the resuscitation area to detect free intraperitoneal fluid as an indication of intraabdominal injury. This prospective study was designed to determine the efficiency of emergency abdominal sonography for evaluating patients with blunt abdominal trauma and to compare the accrurcy of ultrasonography with the results of diagnostic peritoneal lavage and CT scan.
Methods: Emergency sonography was performed prior to diagnostic peritoneal lavage and CT scan on 174 patients with blunt abdorminal trauma. Sonography was performed with FAST ( Focused Abdominal Sonography for Trauma) technique and six area of the abdomen where examined to detect free intraperitoneal fluid.
Results: The results of this study revealed that ultrasonography has a sensitivity of 95% a specificity of 80.8%., and an overall accuracy of 89.4% for detecting free intraperitoneal fluid. The positive and negative predictive value of sonography was 89.4% and 90.1% respectively.
Conclusion: Ultrasonography is a reliable method for the emergent evaluation of blunt abdominal trauma and can be used instead of diagnostic peritoneal lavage.
Saeid Khamnei , Nahid Ghandchilar, Hooshang Najafi, Mahdi Farhoudi,
Volume 6, Issue 1 (4-2006)
Background & Objectives: Many researches have been conducted on autoregulation of cerebral blood flow (CBF), but its possible variations coincidence with postvagal tachycardia have not yet been studied. The present study searched for the effect of this phenomenon on CBF in young and middle-aged persons.
Methods: 52 healthy volunteers including 13 young males (mean age 23.9±0.8), 13 young females (mean age 24.2±0.7), 13 middle-aged males (mean age 58±0.9) and 13 middle-aged females (mean age 56.4±0.7) went under the study. Flow velocity in middle cerebral artery (MCA) was assessed using transcranial Doppler (TCD) ultrasonography apparatus. Eckberg’s neck suction device was utilized to stimulate carotid baroreceptors. The data were analyzed using Minitab and SPSS software (rel. 10).
Results: Concomitant to the carotid baroreceptors stimulation there was a significant reduction in heart rate in all groups (p<0.05), but mean cerebral blood flow did not change significantly. After ending the carotid baroreceptors stimulation and concomitant to PVT, mean cerebral blood flow increased in all groups except middle-aged males. This increase in CBF became significant in middle-aged females (p<0.05).
Conclusion: The results of the present study indicate that cerebral blood flow autoregulation act effectively concomitant to acute stimulation of carotid baroreceptors and this efficacy is maintained until the middle-age, but when faced with PVT, cerebral blood flow autoregulation dose not act effectively.
Mahdi Farhoudi , Mohammadkazem Tarzamani , Khandan Ghannadi Emami ,
Volume 6, Issue 2 (6-2006)
Background & Objectives: Cerebrovascular diseases are the most common disabiling neurologic disorders and the third cause of death in the population over 45 years of age. Most of the strokes in adults are ischemic and almost one-fifth of them are due to intra- or extracranial internal carotid artery stenosis. Ultrasonography is a noninvasive, cost-effective and safe technique for evaluation of intra or extracranial vessels that is available in two methods: TCD and carotid Duplex. The present research is an attempt to investigate the appropriatens and comprehensiveness of TCD in diagnosing symptomatic significant carotid stenosis.
Methods : This descriptive-analytical study was conducted on fifty patients admitted to the neurology ward of Imam Hospital who underwent both carotid duplex and TCD examination. Variables of blood flow velocities, collateral flow evidences and degree of carotid stenosis were assessed with both methods. The data were analyzed by SPSS (ver.11.5) using T.test, Chi-square and Fisher test.
Results : 34 patieuts were. Male mean age of the patients was 66.70% of the subjects were above 65 and 68% of them had a history of hypertension. No statistically significant difference was seen between systolic and diatolic blood flow velocity in internal carotid artery and pulsatile index obtnined from reported by TCD and carotid Duplex. There was no statistically significant difference between the percentage of stenosis TCD finding of the patients with carotid stenosis showed collateral flow in 78.57% of the cases.
Conclusion: Acceptable correlation of the flow velocity parameters and the percentage of carotid stenosis between TCD and Carotid Duplex results showed that the primary performance of TCD to diagnose significant carotid stenosis (that causes hemodynamic disorder) and screen ischemic cerebrovascular accident is a reliable and effective method, but for precise determination of stenosis, plaque typing and for diagnosing stenisis below 50% the performance of carotid duplex study is also necessary and to complemantory TCD.
Soltanali Mahboob, Majid Mohamad Shahi , Abolhasan Shakeri, Alireza Ostad Rahimi , Seyedjamal Ghaem Maghami , Fatemeh Haidari,
Volume 7, Issue 2 (6-2007)
Background & Objectives: Goiter prevalence in school age children is an indicator of the severity of iodine deficiency disorders (IDDS) in the society and a goiter prevalence ≥5 % in school age children indicates a public health problem. In area of mild to moderate IDDS, measurement of thyroid volume by ultrasonography through observation is preferrable to population for grading goiter. Considering the importace of this issue, because of being mountainous and lack of this method's application for determining the incidence of goiter this study was desinged.
Methods: In this descriptive – analytical study, thyroid volumes of 230 boys between 12 to 15 years old were measured by portable ultrasonograph in Tabriz. Also urinary iodine concentrations were determined by method A (Sandell-kolthoff reaction).
Results: Mean of subjects’ thyroid volume was 8.12 ±2.21 ml and with latest references of Iran and WHO/NHD, goiter prevalence was taken based age 51.7 % and based surface body 81.1 %. Urinary iodine median of tested samples was 15.2µg/dl and iodine deficiency prevalence was 29.1 % . There was no significant correlation between urinary iodine and thyroid volume.
Conclusion: Large thyroid volume of middle school boys in Tabriz is probably due to iodine intake deficiency in the first years of their life. Also, the role of goitrogenic factors and effect of climate condition on thyroid volume and goiter prevalence of middle school boys in Tabriz shouldn't be ignored. Further studies are recommended for determination of a local reference for thyroid volume Also it is necessary to be sure from consumption of iodine salt and its standardization.
Parvin Shakouri, Mohammad Kazem Tarzamni, Khalil Ansarin, Marziyeh Tolouea Sadegzadeh, Masoud Nazemyeh, Mohammad Reza Gaffari, Sara Farhang,
Volume 8, Issue 3 (9-2008)
Background & Objectives: Venous thromboembolism is a common disorder that is difficult to diagnose clinically but carries significant mortality if untreated. Many diagnostic imaging algorithms for the detection of PTE, including ventilation perfusion lung scan, Doppler ultrasonography of lower extremity and pulmonary CT angiography. This study's aim was the comparison of Doppler ultrasonography of lower extremity with perfusion -ventilation lung scan in patients suspected for pulmonary emboli and finding the best approach for diagnosis of the suspected pulmonary emboli.
Methods: One hundred twenty patients of suspected pulmonary embolism referred by internists to Doppler ultrasonography of lower limbs Department of Imam's Khomeini Hospital were studied. The patients were studied within 48 hour post suspected pulmonary emboli and evaluated with V/Q scan and Doppler ultrasonography.
Results: The prevalence of DVT in lower limbs of patients suspected of pulmonary emboli was %37.5. Results of lung scan in patients suspected pulmonary emboli are as below: High probability in %17.5, intermediate probability in %27.5, low probability in %41.5 and normal in %13.5 Results of lung scan in patients suspected for pulmonary embolism with DVT are as follow: High probability in %24.4, Intermediate probability in %33.3, low probability in %26.7 and normal in %15.6. Mean age in patients with and without DVT Was 52.53 14.13 and 56.22 17.63 year respectively.
Conclusion: Patients suspected for pulmonary emboli with normal lung scan needs more assessment for DVT in lower extremity with Doppler ultrasonography. Normal Doppler ultrasonography of lower extremity doesn't exclude performing lung scan for approving pulmonary emboli. Doppler ultrasonography and lung scan both need evaluating patients suspected for pulmonary embolism.
Hafez Mirzanejad-Asl ,
Volume 17, Issue 3 (10-2017)
Background & objectives: Alveolar and cystic echinococcosis (CE and AE) are caused by the larval stages of Echinococcus multilocularis and Echinococcus granolosus, respectively. This study was conducted to determine the spread of human AE and CE diseases among the tribes and livestock breeders and farmers in the Moghan plain. The prevalence of infection (CE and AE) significantly increases with a rise in age.
Methods: In this study, using ELISA and HCF-Ag (raw liquid antigen of hydatid cyst) was used for the first time to perform screening, and then the prevalence of cystic echinococcosis and alveolar echinococcosis was evaluated by specific anti-genes Ag-5 and EM2+, respectively. A total of 2003 serum samples were collected randomly from normal populations of five different areas of Moghan plain. In the first stage, serum screening was tested using an enzyme-linked immunosorbent assay and HCF-Ag. After that, the serology of all sera was evaluated by ELISA and specific antigens for alveolar and cystic Echinococcus.
Results: From 2003 samples, 24 serum samples were (1.19%) AE-positive. Infection was higher in men than women (2.1% vs. 0.6%). The age group of 5-19years had the lowest infection rate and the age group 40- 59 years had the highest infection rate (2%). In the case of cystic ecinococcosis, 164 serum samples were positive for Ag-5 specific antigen, i.e. 7.6% infection, and 156 serum samples were positive for Ag-B-specific antigen.
Conclusion: The findings showed that the highest infection rate was found in the Boran and Eivazlou (Palanglou) regions of Moghan plain and the lowest level of human infection was reported in Parsabad region (Nadar-kandi and Agh-ghabagh). In areas with higher contamination, the risk factor associated with CE and AE were the type of water used, the method of washing edible and wild vegetables, occupation and having or not having knowledge of hydatid disease. The infection of Moghan region dogs is one of the main indicators and potential risk factors for human infection.
Shahriar Hashemzadeh , Davood Imani , Reza Javad Rashid , Mohammad Kazem Tarzamani , Sajjad Pourasghary ,
Volume 18, Issue 1 (4-2018)
Background & objectives: 10 year survival rates for thyroid cancer is about 90%, but papillary thyroid cancer often spread to regional lymph nodes resulting in survival rate falls below 90%. In patients with thyroid cancer, cervical lymph node metastasis risk is about 20 to 50 percent. The aim of this study was to evaluate the association between ultrasound results and the involvement of lymph nodes before thyroidectomy and compare it with the pathologic response after thyroidectomy in patients with non-medullary thyroid cancer.
Methods: 60 patients with thyroid cancer were randomly selected and entered into the study. Ultrasonographic examination of cervical lymph nodes was performed by two radiologists using an ultrasound machine in all patients diagnosed with thyroid cancer. Patients underwent total thyroidectomy and neck lymph node dissection by surgeon.
Results: In papillary thyroid cancer, there was a significant relationship between ultrasonographic results and pathologic outcomes in determining the presence of cervical lymph node metastasis before thyroidectomy. And also, there was a significant relationship between the results of ultrasonography and pathologic findings in determining the location of affected lymph nodes.
Conclusion: Compared to histological examination, ultrasonography can be a useful tool in determining the location of affected cervical lymph node in thyroid cancers before surgery.
Manocher Iran-Parvar , Hasan Anari , Seyed Taha Ghoreishi , Mohammad Javad Naghi-Zadeh , Shadab Mirfakhrayi,
Volume 18, Issue 2 (7-2018)
Background & objectives: Ultrasonography as a non-invasive, inexpensive and generally available method has been used to measure of the intima-media thickness (IMT) of carotid arteries changes and finding its relationship with cardiovascular risk factors and vascular diseases. The aim of this study was to investigate the carotid arterial wall thickness (IMT) changes based on clinical and para-clinical indexes in patients with type 2 diabetes mellitus (DM).
Methods: In this descriptive-analytical study, 100 patients with type 2 DM were randomly selected from all patients admitted to diabetes clinics and were considered in terms of clinical and paraclinical indexes of systemic atherosclerosis. Both types of IMT (TA and TB) were measured by ultrasonography in six locations of the carotid system. The intensity of these two values was calculated compared with the normal IMT and also, its relationship with clinical and para clinical indexes were determined. The results were statistically analyzed using SPSS software version 19.
Results: In this study, more than 80% of patients had IMT upper than normal. There was a significant difference between the severe increase of IMT and effective variables such as sex, smoking, physical inactivity, dyslipidemia and poor blood glucose control.
Conclusions: This study showed that the DM and factors such as sex, smoking, physical inactivity had a significant effect on the increasing IMT compared to the normal range.