Alireza Vajhi
Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
[ 1 ] - Comparison of computerized digital and analog radiography for detection of bronchial pattern in dogs
Background: Analog radiography has been replaced with digital radiography for canine diagnostic imaging in many veterinary clinics. There is no data comparing these modalities in a veterinary clinical setting to detect bronchial pattern signs in dogs. Objectives: In this study, computerized digital radiography (CR) and analog radiography were compared for diagnosis of bronchial pattern in dogs....
[ 2 ] - Echocardiographic findings in athletic horses with pulmonary regurgitation
BACKGROUND: Determining the clinical significance of cardiac murmurs is widely considered in equine practice. Pulmonary murmurs are commonly detected in athletic horses. Echocardiography plays a leading role in assessment of these murmurs. OBJECTIVES: Echocardiographic evaluation of horses with pulmonary regurgitation and determining the importance of pulmonary valve murmurs. METHODS: A total n...
[ 3 ] - Radiographic measurements of front feet of the sound Akhal-Teke horses
The Akhal-Teke is an ancient horse originat-ing from Asia where it was used by nomadic tribes and used as a warhorse. Lameness examinations require proper interpretation of clinical and radiographic findings. Therefore, understanding of normal radiographic findings of the foot is necessary. Although the radiographic appearance of the normal foot must be understood to recognize abnormalities ...
[ 4 ] - Footpad horn hypertrophy and vertical fissure accompanied by white line disease 2 in case of concurrent deep digital sepsis in a culling cow
A5.2 year-old Holstein cow was presented with lameness andabnormal weight bearing in a slaughterhouse. Widening of theperiople and swelling of the heel area in the lateral claw was morepermanent than the medial claw. Vertical fissure (VF) involvingthe coronary band to the middle of the dorsal wall of the medialhind claw was observed. It was also extended to the bearingsurface in the inner surfa...
[ 5 ] - Three-dimensional color Doppler ultrasonography of the kidney vasculature in normal dogs
Three-dimensional color Doppler ultrasonography is a new technique to evaluate the pattern of blood vessels. This study was performed to assess the feasibility of this method in evaluation of kidney vasculature pattern in dogs. In this paper, visualization of the Renal, Interlobar, Arcuate, and interlobular arteries and veins using 3D color Doppler ultrasonography in dogs is shown and the techn...
[ 6 ] - Ultrasonography of the supramammary lymph nodes for diagnosis of bovine chronic subclinical mastitis
Currently, somatic cell count (SCC) and bacterial culture are considered as the gold standard of detecting subclinical Mastitis. Mastitis leads to proliferation of lymphocytes in the supramammary lymph nodes and subsequent enlargement of ipsilateral lymph node. Ultrasonography can be used to survey these changes. A portable ultrasound machine with a 2-5 MHz convex transducer was used to identif...
[ 7 ] - Are magnetic resonance imaging or radiographic findings correlated with clinical prognosis in spinal cord neuropathy?
Dogs presented to the Small Animal Hospital of Veterinary Medicine, University of Tehran were included in the present study if spinal or intervertebral disc involvement was suspected. Clinical signs were recorded as well as general information of the patient such as age, breed and sex. Sixty dogs were examined radiographically and two standard orthogonal lateral and ventrodorsal projections wer...
[ 8 ] - Digestive system anatomy of the Acipenser persicus: New features
Sturgeon is one of the most important species of the Caspian Sea aquatics. Unfortunately, this species faces the threat of extinction today. This makes specific studies on any type of sturgeons more important than before. Studies like histological studies, radiology, and sonography, all require a complete understanding of the anatomy of this fish. Since pilot studies showed some misconceptions ...
[ 9 ] - بررسی اکوکاردیوگرافی و بافت شناسی قلب در فیلماهی نابالغ دو و نیم ساله
چکیدهزمینه مطالعه: فیلماهی (Huso Huso) یکی از گونه‌های ماهیان خاویاری بوده که امروزه در ایران به صورت مصنوعی با اهداف گوناگون پرورش داده می‌شود. یکی از مهمترین دستگاه‌های بدن دستگاه گردش خون می‌باشد و قلب مهمترین عضو این دستگاه است. تاکنون بررسی چندانی روی قلب ماهیان خاویاری انجام نشده است.هدف: این مطالعه با هدف مشخص کردن ساختار دقیق دیواره بخش‌های مختلف قلب در فیلماهی با استفاده از روش‌های ا...
[ 10 ] - بررسی کالبد شناختی تصاویر سی تی اسکن و توپوگرافی اندامهای غیر تنفسی حفره سلومی در لاکپشت برکهای اروپایی (Emys orbicularis)
زمینه مطالعه: خزندگان و خصوصاً لاک‌پشتانی که هم در خشکی و هم در آب زندگی می‌کنند، دارای سازگاری‌های ویژهای هستند. بسیاری از افراد لاک‌پشتان را به عنوان حیوان خانگی نگهداری می‌کنند. بنابراین اطلاعات کالبدشناسی در مورد لاک‌پشتان باید افزایش یابد و برای اهداف درمانی مورد استفاده قرار گیرد. یکی از انواع آنها لاکپشت برکهای اروپایی (Emys orbicularis) است که بیشتر دستگاه‌های حیاتی بدن در داخل فضای م...
[ 11 ] - مقایسه دقت تشخیص اولتراسونوگرافی و رادیولوژی در بررسی روند التیام نقیصه‌های استخوانی با اندازه بحرانی در استخوان زنداعلی در خرگوش
زمینه مطالعه: التیام نقیصه‌های استخوانی با اندازه بحرانی یکی از چالش‌های مهمی است که متخصصین ارتوپدی با آن مواجه‌اند. برای بررسی روند التیام استخوان معمولاً از رادیوگرافی ساده استفاده می‌شود. رادیولوژی مکرر دارای عوارض جانبی بوده و تحقیقات اخیر نشان‌دهنده تشخیص زودهنگام نشانه‌های التیام استخوان به‌وسیله اولتراسونوگرافی است. هدف: هدف از این مطالعه بررسی دقت تشخیص رادیولوژی و اولتراسونوگرافی در...
[ 12 ] - بهبودی علایم بالینی در مدل تجربی سندرم زجر تنفسی حاد در گوسفند پس از پیوند اتولوگ با سلولهای بنیادی مزانشیمی مشتق شده از مغز استخوان
زمینه مطالعه: سندرم زجر تنفسی حاد(ARDS)یکی از اختلالات ریوی است که سبب مرگ در انسان و دام می‌شود و بدلیل نبود درمان دارویی ویژه برای آن، دستیابی به رویکردهای درمانی جدید مثل درمان با سلولهای بنیادی، یک نیاز ضروری است. هدف: ارزیابی اثرات درمانی پیوند داخل نایی سلولهای بنیادی مزانشیمی مغز استخوان(BM-MSCs) در بهبود علائم بالینی در مدل تجربیARDS ایجاد شده با لیپوپلی‌ساکارید(LPS) ایکلای سویه-O55:B5...
[ 13 ] - Digestive system anatomy of the Acipenser persicus: New features
Sturgeon is one of the most important species of the Caspian Sea aquatics. Unfortunately, this species faces the threat of extinction today. This makes specific studies on any type of sturgeons more important than before. Studies like histological studies, radiology, and sonography, all require a complete understanding of the anatomy of this fish. Since pilot studies showed some misconceptions ...
[ 14 ] - Normal Echocardiographic Findings in Healthy Pigeons
Objective- The purpose of this study was to investigate the feasibility of performing echocardiography in apparently healthy pigeons, and measurement of the quantitative cardiac indices using B-mode and Doppler techniques. Design- Experimental study Animals- Ten apparently healthy pigeons Procedures- Echocardi...
[ 15 ] - Computed Tomographic Anatomy and Topography of the Lower Respiratory System of the European Pond Turtle (Emys Orbicularis)
Objective- This study was done to give complete topographic information about the position of the lungs and trachea in European pond turtle using Computed Tomography (CT) and usual anatomic methods. Design- Experimental study Animals- 10 female, adult European pond turtles (Emys orbicularis) Procedures- All scans were obtained on a two detector scanner. In anatomical study eight tur...
[ 16 ] - Ultrasonographic Findings of Ovary and Testis in Adult Acipenser Persicus during Artificial Propagation (Stage V of Maturity)
Objective- Acipenser persicus is one of the most important caviar producing fishes in the Caspian Sea and one of the endangered species of the sturgeon fishes. For breeding of sturgeons, large numbers of animals have to be captured and examined to obtain sufficient numbers of mature fishes that will spawn within a few months in captivity. Design- Original study Animals- A total of 66 adult Acip...
[ 17 ] - Ultrasonographic Volumetry of the Canine Thyroid Gland: A Comparison of 2D, 3D Ultrasonography and Real Gland Volume
Objective: to compare the estimated thyroid volume, as determined by two-dimensional (2D) and three-dimensional (3D) ultrasonography, with real volume. Design: Descriptive Study Animals: A total of 7 mixed breed dogs Procedures: On 2D ultrasound, the thyroid volume is estimated by the ellipsoid equation and on 3D ultrasound; it is estimated by outlining the boundaries of the thyroid lobe in ...
[ 18 ] - Radiographic Anatomy of the Head of Sheep
Objective- The purpose of this study was to assess and describe the radiographic anatomy of the bony structures in the head of sheep. Design- Experimental study. Animals- Fifteen mature Afshari sheep. Procedures- Radiographs were made out of the head of the animals in lateral and dorsoventral views. Radiographic anatomy was analyzed with results from gross dissection of 5 specimens. Results- De...
[ 19 ] - Echocardiographic Measurement of Systolic Time Intervals in Healthy Great Dane Dogs
Objective- to determine the range of systolic times intervals using Pulsed-wave Doppler and m-mode echocardiography in normal, healthy Great Dane dogs. Design- Descriptive study. Animals- Thirty healthy Great Dane dogs. Procedures- This study examined 30 clinically healthy Great Dane dogs by the twodimensional, M-mode and Pulsed-wave Doppler echocardiography. The dogs were awake and unsedated. ...
[ 20 ] - Bilateral Pancarpal Arthrodesis in a German Shepherd Dog
Case Description- A 5-year old male German shepherd weighting 28 kg with the history of falling from the third floor 9 month previous was referred to the Small Animal Hospital. Clinical Findings- In clinical examination roughness and thickness of the skin of the palmar surface of both forelimbs were felt. The animal was using his palmar plane of both forelimbs to walk without any signs of pain ...
[ 21 ] - Ultrasonographic Measurement of the Anterior and Posterior Lens Capsules of the Eyes and its Comparison with a Field Study in Normal Rabbit
Objective- To find normal value of thickness of the lens capsules in domesticated rabbits by ultrasonography. Design- experimental in vivo study and clinical trial. Animals- Twelve matured and immature domesticated rabbit. Procedures- The eyes of 12 non anaesthetized domesticated rabbits were sonograophed using a linear 6-12 MHz high frequency transducer. The thickness of anterior and posterior...
[ 22 ] - “Rusterholz” Ulcer in Culling Lame Cows: Clinical and Radiographic Interpretation
Objective- To investigate and quantitate radiological and clinical changes in tissues and structures of the claws affected by Rusterholz ulcer. Design- Cross-sectional and Descriptive study Animal- Seven culled lame cows were affected with “Rusterholz” ulcer Procedures- Forty one culled lame cows of 1135 culled cows having digital disorders which were randomly selected for clinical and r...
[ 23 ] - Assessment of the Lens Anterior–Posterior Diameter as Compared with the Eye Globe by Ultrasonography in Rabbit
Objective- Assessment of the lens anterior – posterior (AP) diameter as compared with the eye globe by ultrasonography in rabbit. Design- Descriptive study. Animals- 120 male and female rabbits, two months to four years old, and weighting between 300 to 1500gr. Procedures- 2D ultrasonography of the eyes was performed and AP diameter of the eyes and lens were measured using Sonosite Tit...
[ 24 ] - Clinical and Radiographic Findings of Heavy Metal Poisoning in Psittacine Birds
Objective- To evaluate the radiology application in diagnosis of heavy metal poisoning inbirds.Design- Descriptive study.Animals- In this article 4 suspected cases of heavy metal poisoning, including 3 African GreyParrots and a Sulfur Crested Cockatoo are described.Procedures- Presumptive diagnosis of heavy metal poisoning was made based on history andclinical signs including severe progressive...
[ 25 ] - Three-Dimensional Color Doppler Ultrasonography Study of Normal Liver Vascular Pattern in Dog
Objective- To create three-dimensional model of the dog's liver vessels by using threedimensionalcolor Doppler ultrasonography which can be used for surgery planning,tumor detecting, transplantation, and other diagnostic or treatment project.Design- Descriptive studyAnimals- 6 mixed breed dog, 1.6-1.7 years old, 18-20 kg weightProcedures- The liver was found by two-dimensional scan initially th...
[ 26 ] - Ankylosis of the Digit Bones in Six Culling Lame Cows
Objective- To review the six cases for determination the radiological, pathological andclinical features of bony ankylosis of the interphalangeal joint.Design- Cross-sectional and Observational studyAnimal- Six Culling Lame Dairy CowsProcedures- Forty one culled lame cows of 1135 culled cows having digit disorderswhich were randomly selected for clinical and radiographic and pathological purpos...
[ 27 ] - Normal Color and Pulsed-Waved Doppler Ultrasonography of Femoral and Axillary Arteries in Dogs
Objective- Obtaining the normal images ofcolor doppler and estimation ofblood flow velocity parametersof femoral and axillary arteries in dog.Design- Descriptive studyAnimals- 7 healthy adult mixed-breed dogs, weighing 14.3 ± 2.8 kg (mean ± SD).Proceudure- Left and right femoral and axillary arteries of hind and forelimbs were evaluated. Colorand spectral doppler images ofthe each artery were o...
[ 28 ] - Possibility and Reproducibility of Renal Assessing and Size Measurement by Three- Dimensional vs Two- Dimensional Ultrasounographv in Dogs
Objective- To determine the possibility and reproducibility of three-dimensional ultrasonography (3DUS)and comparison of the achieved measurements to normal two-dimensional ultrasonography (2DCS)Design- Descriptive studyAnimals- 10 young mixed normal dogs, age 1.5-2.5 year, weighing 9.7-12 kg Procedure- Renal width, length, and depth measured in coron al and transverse sections. The measurement...
[ 29 ] - Investigation of the Relationship between Ultrasonographic Findings and Analyses of Bladder Contents in Cats
Background: Echoes are frequently observed in cat bladder contents through ultrasonography and often mentioned as incidental findings. No comprehensive study has been conducted so far on the precise echoes nature in the bladder contents ultrasonography in cats. OBJECTIVES: The purpose of this study is to provide an accurate description of the cat bladder contents echoes and to specify the relat...
[ 30 ] - Comparison of computed tomographic and cytological results in evaluation of normal prostate, prostatitis and benign prostatic hyperplasia in dogs
Prostate gland can be structurally evaluated by computed tomography (CT) with taking advantages of tomographic feature and post-contrast parenchymal changes. The current examination initiated to determine association between computed tomographic and cytological results in evaluation of canine prostate. Thirty mature male dogs were included and under gone by both CT and fine needle sampling of p...
[ 31 ] - مطالعه آناتومیکی نماهای اکوکاردیوگرافی سگ
زمینه مطالعه: اکوکاردیوگرافی روش غیرتهاجمی بوده و ابزاری سودمند در تشخیص بیماری‌های قلبی است. تفسیر نتایج اکوکاردیوگرافی نیازمند داشتن آگاهی کافی از آناتومی قلب است. هدف: هدف از این مطالعه تهیه مقاطع آناتومیکی قلب به روشی ساده و بر اساس نماهای اکوکاردیوگرافی بوده تا به عنوان الگویی برای آموزش اکوکاردیوگرافی سگ مورد استفاده قرار گیرد. روش کار: پس از خارج سازی قلب از شش قلاده سگ، اتساع و فیکساس...
[ 32 ] - A survey on the prevalence of heart murmurs in polo horses
Background: Cardiac murmur and subsequently cardiac failure is one of the poor-performance causes in athletic horses. Attention to murmur character is vital during heart examination. Polo is a sport which demands very high stress on horses, which may result in more stress on cardiovascular system. Objectives: In this study we assume that high pressure on polo horses makes them more susceptible ...
[ 33 ] - Investigating the Echocardiography and Heart Anatomy of Immature Beluga (Huso huso)
Objective: The purpose of present study was to obtain a complete understanding about anatomical features and echocardiography of Beluga (Huso huso) species in order to provide standard approaches for performing echocardiography on this sturgeon species.Design - Experimental studyAnimals -10 immature (2.5 years old) Beluga (Huso huso)Procedures- To perform echocardiography, Son...
[ 34 ] - Investigating the Normal Digestive Canal Ultrasonography of Mature Persian Sturgeon for Providing Standard Approaches
Objective- This study was conducted to make a full understanding of the anatomic and ultrasonographic characteristics of digestive canal in Persian Sturgeon and provide standard approaches for performing digestive tract ultrasonography on this sturgeon species.Design - Experimental studyAnimals - 30 mature Persian sturgeons (Asipenc...
[ 35 ] - مطالعه آناتومی و اولتراسونوگرافی طبیعی رگ‌های مرتبط با قلب فیل ماهی (Huso huso) نابالغ
زمینۀ مطالعه: از مهمترین بخش‌های دستگاه گردش خون، رگ‌های مرتبط با قلب هستند. اولتراسونوگرافی یکی از بهترین روشهایی است که میتواند جهت بررسی دقیق قلب و رگ‌های مرتبط با آن در ماهی مورد استفاده قرار گیرد. هدف: به دست آوردن شناختی کامل از ویژگیهای آناتومی و اکوکاردیوگرافی این رگ‌ها در فیلماهی و ارائه شیوهای استاندارد برای انجام سونوگرافی. روش‌کار: تعداد10 عدد فیلماهی نابالغ انتخا...
نویسندگان همکار