난소종양에 있어서 Power도플러 초음파의 유용성에 관한 예비적 연구

나준희(JH Na),이상수(SS Lee),김용만(YM Kim),최효경(HK Choi),조경식(KS Cho),김영탁(YT Kim),남주현(CH Nam),목정은(JE Mok) 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.6

Recently, a method of color Doppler sonography has been described that is based on estimation the integrated Doppler power spectrum which is represented as Power Doppler ultrasonography. Several potential advantages of Power Doppler ultasonography over conventional color Doppler ultrasonography include that noise is represented in uniform pattern in power mode, the relative angle independence and abscence of aliasing effect. It appears to be a potentially useful particularly for evaluating slow flow in parts of the body where the signal is weak because blood vessels are small or deep. This could be applied to the evaluation of the flow in the ovarian tumors. And it is believed that the analysis of blood flow characteristics as well as angiogenesis location and the amount and arrangement of microvascular network may help in distinguishing malignant versus benign tumors. We will represent a preliminary report to demonstrate a efficacy of power Doppler ultrasonography in the detection of ovarian tumor vascularity. Thirty-one patients with ovarian masses were prospectively evaluated with power and conventional color Doppler sonography using 7.0 MHz endovaginal probe or 3.0 MHz transabdominal probe with a pulse repetition frequency of 700 Hz. The evaluation criteria were the detection of vasculature, the arterial waveform analysis if possible, and defining the vascular location. With conventional color Doppler sonography, the vascularity within the ovarian tumors could be detected in 74.2% of total patients, and 90.3% of total patients with power Doppler sonography, Doppler waveform analysis was possible in 83.9% of total patients with power Doppler sonography and in 71.0% at conventional color Doppler sonography. The vascular patterns within each parts(solid area, septum, pericystic) of the ovarian tumors were relatively well defined with power Doppler sonography as compare to those with conventional color Doppler sonography. In conclusion, power Doppler ultrasonography was shown to be superior to conventional color Doppler ultrasonography in the depiction of ovarian intratumoral vasculature.

음경복합초음파검사의 발기유발제로서 복용약이 주사제를 대체할 수 있는가?

류인욱,윤하나,심봉석,박영요,정우식 대한비뇨의학회 2008 Investigative and Clinical Urology Vol.49 No.7

Purpose: To clarify whether vardenafil can be used as a substitute for intracavernosal injection as a method of induction of penile erection, we compared the outcome of penile duplex Doppler ultrasonography using both methods in the same patient with erectile dysfunction. Materials and Methods: A total of 23 patients underwent penile duplex ultrasonography twice with a one week interval between procedures. Twelve were randomly selected for intracavernosal injection first with prostaglandin E1(PGE1) 20μg and the remaining 11 were initially treated with oral vardenafil 20mg 1 hour before the Doppler study and in addition had visual sexual stimulation using a head-mounted display during the study. The peak systolic velocity(PSV), end diastolic velocity(EDV) and the degree of maximum erectile response were measured and compared between the two groups. Results: Measurements from the PGE1 treatment were not significantly different from those with the vardenafil treatment. The percentage of compatibility between the two methods with regard to hemodynamic diagnosis and pharmaceutical erectile response was as high as 83%(19 of 23) and 91%(21 of 23), respectively. Both methods were tolerable and safe without severe complications. However, in 4 patients where the diagnosis was uncertain, the injection method provided a more accurate interpretation of the penile vascular status with duplex ultrasonography. Conclusions: These results suggest that oral vardenafil can be used as an initial method for inducing penile erection when assessing erectile dysfunction with penile duplex Doppler ultrasonography in selected patients with erectile dysfunction. Purpose: To clarify whether vardenafil can be used as a substitute for intracavernosal injection as a method of induction of penile erection, we compared the outcome of penile duplex Doppler ultrasonography using both methods in the same patient with erectile dysfunction. Materials and Methods: A total of 23 patients underwent penile duplex ultrasonography twice with a one week interval between procedures. Twelve were randomly selected for intracavernosal injection first with prostaglandin E1(PGE1) 20μg and the remaining 11 were initially treated with oral vardenafil 20mg 1 hour before the Doppler study and in addition had visual sexual stimulation using a head-mounted display during the study. The peak systolic velocity(PSV), end diastolic velocity(EDV) and the degree of maximum erectile response were measured and compared between the two groups. Results: Measurements from the PGE1 treatment were not significantly different from those with the vardenafil treatment. The percentage of compatibility between the two methods with regard to hemodynamic diagnosis and pharmaceutical erectile response was as high as 83%(19 of 23) and 91%(21 of 23), respectively. Both methods were tolerable and safe without severe complications. However, in 4 patients where the diagnosis was uncertain, the injection method provided a more accurate interpretation of the penile vascular status with duplex ultrasonography. Conclusions: These results suggest that oral vardenafil can be used as an initial method for inducing penile erection when assessing erectile dysfunction with penile duplex Doppler ultrasonography in selected patients with erectile dysfunction.

Doppler ultrasonography of the lower extremity arteries: anatomy and scanning guidelines

황지영 대한초음파의학회 2017 ULTRASONOGRAPHY Vol.36 No.2

Doppler ultrasonography of the lower extremity arteries is a valuable technique, although it is less frequently indicated for peripheral arterial disease than for deep vein thrombosis or varicose veins. Ultrasonography can diagnose stenosis through the direct visualization of plaques and through the analysis of the Doppler waveforms in stenotic and poststenotic arteries. To perform Doppler ultrasonography of the lower extremity arteries, the operator should be familiar with the arterial anatomy of the lower extremities, basic scanning techniques, and the parameters used in color and pulsed-wave Doppler ultrasonography.

Color Doppler Ultrasonography Is a Useful Tool for Diagnosis of Peripheral Artery Disease in Type 2 Diabetes Mellitus Patients with Ankle-Brachial Index 0.91 to 1.40

허규연,전지은,최영주,이용호,김대중,박석원,허병욱,이은직,지선하,허갑범,최성희 대한당뇨병학회 2018 Diabetes and Metabolism Journal Vol.42 No.1

Background: The clinical utility of ankle-brachial index (ABI) is not clear in subjects with less severe or calcified vessel. Therefore, we investigated the usefulness of color Doppler ultrasonography for diagnosing peripheral artery disease (PAD) in type 2 diabetes mellitus (T2DM) subjects. Methods: We analyzed 324 T2DM patients who concurrently underwent ABI and carotid intima-media thickness (CIMT) measurements and color Doppler ultrasonography from 2003 to 2006. The degree of stenosis in patients with PAD was determined according to Jager’s criteria, and PAD was defined as grade III (50% to 99% stenosis) or IV stenosis (100% stenosis) by color Doppler ultrasonography. Logistic regression analysis and receiver operating characteristic curve analysis were performed to evaluate the risk factors for PAD in patients with ABI 0.91 to 1.40. Results: Among the 324 patients, 77 (23.8%) had ABI 0.91 to 1.40 but were diagnosed with PAD. Color Doppler ultrasonography demonstrated that suprapopliteal arterial stenosis, bilateral lesions, and multivessel involvement were less common in PAD patients with ABI 0.91 to 1.40 than in those with ABI ≤0.90. A multivariate logistic regression analysis demonstrated that older age, current smoking status, presence of leg symptoms, and high CIMT were significantly associated with the presence of PAD in patients with ABI 0.91 to 1.40 after adjusting for conventional risk factors. CIMT showed significant power in predicting the presence of PAD in patients with ABI 0.91 to 1.40. Conclusion: Color Doppler ultrasonography is a useful tool for the detection of PAD in T2DM patients with ABI 0.91 to 1.40 but a high CIMT.

음낭 도플러초음파검사를 이용한 정계정맥류의 진단

김원식,최도연,한영택 大韓泌尿器科學會 1998 Korean Journal of Urology Vol.39 No.11

정상 MRI, MRA 소견을 보인 건강 성인의 Transcranial Doppler Ultrasonography의 정상 참고치

조수진,정진상,이광호 대한신경과학회 1998 대한신경과학회지 Vol.16 No.3

기흉의 초음파 진단에서 칼라 도플러의 이용과 검사 부위에 따른 민감도

박현수,김기운,안정환,차수현,민영기 대한응급의학회 2006 大韓應急醫學會誌 Vol.17 No.6

Purpose: Thoracic ultrasonography (US) is an emerging tool for diagnosing pneumothorax (PTX), and the possible application of color Doppler to ultrasonography is another new development. The aim of this study is to analyze the possible contribution of color Doppler to thoracic US and to the estimation of pneumothorax volume. Methods: Patients who were admitted to emergency department underwent chest X-ray and thoracic US with color Doppler. They were also evaluated by computed tomography, if needed, US was performed at four chest sites by emergency medicine faculty and resident, and concordance between color Doppler and lung sliding was analyzed. The number of sites with abnormal findings was correlated with the volume of PTX at each sites. Statistical analysis was performed with Pearson correlation. Results: Sixty-three of 151 PTX cases were included in our study. The sensitivity of US was for PTX detection was 92.1% (58 of 63), and the concordance between color Doppler and lung sliding was 99.4%. The number of sites per patient with abnormal findings increased with the average volume of the PTX. The average PTX volume in the 5 cases with normal findings was 7.0%, which is a smallsized PTX. Conclusion: The use of color Doppler is not more accurate than lung sliding, but it may helpful in diagnosing PTX. The volume of a PTX is proportional to a patient’s number of sites with abnormal US findings.

미숙아 유리질막증에서 표면활성제 투여에 따른 뇌혈역학변화

유정현,김경희 대한초음파의학회 2000 ULTRASONOGRAPHY Vol.19 No.3

Ultrasonography of intrascrotal torsed appendages: size and interval between symptom onset and the ultrasonographic examination according to echogenicity

Seung-Hyun Lim,양달모,김현철,김상원,Hyunmin Kim,Da In Lee,Sung Kyung Moon,박성진 대한초음파의학회 2023 ULTRASONOGRAPHY Vol.42 No.2

Purpose: This study investigated the size of torsed appendages and the interval between symptom onset and the ultrasonographic examination according to the echogenicity of the torsed appendages. Methods: This was a retrospective analysis of 54 cases in 46 patients with torsion of the testicular appendages between December 2008 and July 2021. Eight patients received follow-up ultrasonography 7-48 days after initial ultrasonography. The echogenicity of torsed appendages was classified into three groups: hypoechoic, hyperechoic, or isoechoic. Results: The 54 torsed appendages were hypoechoic (n=40), hyperechoic (n=9), or isoechoic (n=5). The size of the torsed appendages ranged from 4 to 14 mm (8.0±3.1 mm) in hypoechoic torsed appendages and from 2.6 to 5.0 mm (3.7±0.9 mm) in hyperechoic torsed appendages. The interval between symptom onset and the ultrasonographic examination ranged from 0 to 17 days (4.2±4.4 days) in hypoechoic torsed appendages and from 8 to 48 days (29.8±16.0 days) in hyperechoic torsed appendages. The hyperechoic torsed appendages were smaller and had longer intervals between symptom onset and the ultrasonographic examination than the hypoechoic torsed appendages (P<0.05). Three hypoechoic torsed appendages and a single isoechoic torsed appendage on initial ultrasonography became hyperechoic on follow-up ultrasonography. Conclusion: The size of the torsed appendages and the interval between symptom onset and the ultrasonographic examination varied according to the echogenicity of the torsed appendages. The hyperechoic torsed appendages were smaller and had longer intervals until the examination than the hypoechoic torsed appendages.

Evaluation of the Causes of Erectile Dysfunction in Patients Undergoing Penile Doppler Ultrasonography in Pakistan

Usman Khanzada,Sohail Ahmed Khan,Munawar Hussain,Hatem Adel,Kamran Masood,Syed Omair Adil,Murli Manohar 대한남성과학회 2017 The World Journal of Men's Health Vol.35 No.1

Purpose: In patients with erectile dysfunction, it is important to differentiate psychogenic from organic causes. Penile Doppler ultrasonography is a relatively inexpensive and minimally invasive tool for this purpose. This study was conducted to evaluate the causes of erectile dysfunction in an adult male population, using penile Doppler ultrasonography.Materials and Methods: A retrospective study was conducted in a single center. All patients who presented with complaints of erectile dysfunction and underwent penile Doppler ultrasonography between July 2014 and June 2016 were included in this study. All examinations were performed using GE Voluson S6 and GE Logiq P5 devices. Following baseline scans, an intracavernosal injection of 20 μg of prostaglandin E1 was given. Peak systolic and end diastolic velocities were measured in each cavernosal artery. Patients with a peak systolic velocity of <25 cm/s were considered to have arterial insufficiency, while an end diastolic velocity of >5 cm/s was considered to indicate venous incompetence.Results: Out of 97 patients (mean age, 37.09±11.59 years; range, 19∼69 years), 50 patients (51.5%) had normal findings, 24 patients (24.7%) had arterial insufficiency, 15 patients (15.5%) had a venous leak, and 8 patients (8.2%) patients had arterial insufficiency with a venous leak. Psychogenic erectile dysfunction was significantly higher among patients aged ≤40 years, while arterial insufficiency with or without a venous leak was significantly higher among patients aged >40 years (p=0.022).Conclusions: A majority of the studied individuals demonstrated no organic cause of erectile dysfunction, thus confirming a high prevalence of the psychogenic etiology, particularly in relatively young individuals.