bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic Contrast Enhanced MRI in Glioma Diagnosis
Authors: Nechipay E. A. , Dolgushin M. B. , Pronin A. I. , Kobyakova E. A. , Fadeeva L. M. 
Published: February 2019

The aim: to examine the possibility of using dynamic contrast enhanced magnetic resonance imaging (DCE MRI) in clarifying the diagnosis of glial brain tumors and the differentiation between them on the basis of the malignancy degree. In this regard, the authors evaluated the effectiveness of perfusion parameters (Ktrans, Kep, Ve and iAUC).Materials and methods.The study included examination of 54 patients with an established presence of brain glial tumors. Glioma Grade I–II diagnosed in 13 (24.1%) and glioma Grade III–IV in 41 (75.9%) cases. Morphological verification of the diagnosis obtained as a result of either surgical removal of the tumor or stereotactic biopsy was achieved in 31 (57.4%) patients: glial tumors Grade I–II identified in 6 (19.4%), and glioma Grade III–IV – 25 (80.6%) cases. Results. According to DCE increasing of the malignancy degree of glial tumors is followed by increasing of all perfusion parameters: thus, the lowest values of Ktrans, Kep, Ve and iAUC were identified in low grade gliomas (0.026 min−1, 0.845 min−1, 0.024 and 1.757, respectively), the highest in gliomas Grade III–IV (0.052 min−1 1.083 min−1, 0.06 and 2.694, respectively). The most informative parameters with sensi tivity 90% and specificity 100% in the differential diagnosis of gliomas Grade I-II and Grade III-IV are Ktrans (cut-off = 0.16 min−1) and Ve (cut-off = 0.13).Conclusion.DCE MRI can be used in differential diagnosis of glial brain tumors of different malignancy grade.
The Possibility of Forecast an Expressed Intraoperative Bleeding During Transurethral Resection of the Prostate using Preoperative Transrectal Ultrasound
Authors: Bolotskov A. S. , Gurtskoy R. A. , Madzhugin M. L. , Shulzhenko V. V. 
Published: February 2019

There is no doubt about the prevalence rate of benign prostate hyperplasia. Currently, transurethral prostate resection (TUR) is the main method of surgical treatment. To clarify the degree of possible intraoperative bleeding, we assume the application of pre-hospital transrectal ultrasonic prostate examination (TRU) with vascular Doppler and 2D Shear Wave elastography.The aim: to evaluate the possibilities of preoperative complex TRU prostate examination in forecasting of the expressed intraoperative bleeding.Materials and methods. The study included the results of a survey of 242 patients in the urological Department of the road clinical hospital of Rostov-on-don in the period from 2016 to 2017, which had undergone TUR of the prostate. All patients before the operation was performed prostate transrectal ultrasonography (TRU) with Doppler and 2D Shear Wave Elastography (2DSWE). Depending on the amount of blood loss determined after surgery, all patients were divided into three statistically (p < 0.001) significant groups (р < 0.001). All TRU examinations were made with ultrasound system Aixplorer (France). During Doppler sonography, maximal linear blood flow velocity (Vmax) in capsular arteries (CA), in “surgical capsule” arteries (SCA) and in the paraurethral artery (PuA) was measured. During 2D Sheare Wave elastography (2D SWE) stiffness of tissues was measured (in kPa) in symmetric areas of both lobes of peripheral zone (PPZ), central zone (CZ), and transitory zone (TZ) of prostateResults. Significant (p < 0.001) correlation of blood loss with reduction of hemoglobin level, as well as with Vmax CA, Vmax PuA, tissue stiffness TZ and areas on the border with the surgical capsule revealed. The ROC analysis showed, that sensitivity and specificity of predictions of severe intraoperative blood loss, when using a cut-off for the Vmax of the blood flow in CA more 18.7 cm/s, was respectively 87.2% and 94.4 per cent; when using a cut-off for the Vmax of the blood flow in the basin PUA over 24.2 cm/s – respectively of 76.6% and 78.5%; when using a cut-off of stiffness of the tissues TZ less of 39.8 kPa – respectively 100% and 95.4%: when using a cut-off of stiffness of the tissues at the border of the “surgical capsule” less than the 38.1 kPa – respectively 89,4% and 90,8%.Conclusion.The use of cut-off Vmax values for the blood flow in the paraurethral and capsular arteries, as well as the use of cut-off values for tissue stiffness in the prostate transitory zone of prostate and in the surgical capsule area, may be an effective means of forecasting of expressed intraoperative bleeding. The data presented is recommended to take into account the operating surgeon during the selection of patients for operative benefits.
Hybrid Technology Fusion MRI/US and Sonoelastography in Diagnosis of Fatty Degeneration and Atrophy of Supraspinatus Muscle of the Shoulder
Authors: Gazhonova V. E. , Emelianenko M. V. , Onishchenko M. P. 
Published: February 2019

Evaluation of the rotator cuff muscles is of value for surgical indications and successful postoperative prognosis. Ultrasound is widely used for detection of rotator cuff tears, but it’s role in evaluation of the rotator cuff muscles is not yet defined. A new method Fusion MRI/US with elastography is able to show differences in tissue stiffness, and a simultaneous combination of two methods helps to overcome limitations from US – narrow field of view, and from MRI – impossibility for real time examination and low space resolution.Purpose.To investigate diagnostic performance and interobserver reliability of US elastography and to study possibilities of Fusion MRI/US technique in grading fatty degeneration and atrophy of the supraspinatus muscle.Materials and methods.72 patients from 128 with shoulder pain and disability with written diagnostic confirm were specially selected for the study with US elastography and MRI and 29 patients were enrolled for Fusion MRI/US study. Oblique sagittal scans through the supraspinatus muscle were performed during US elastography study in the standard manner for comparance with MRI. The amount of fatty degeneration was graded according to the modified Goutallier five-point scale, with use of a 3-point scale – with US elastography. US results for grade of atrophy and fatty degeneration were retrospectively reviewed by 2 blinded to each other results experts. Sensitivity and interobserver reliability was estimated.Results.The sensitivity of standard US in comparance to US elastography in assessment of muscle atrophy with the reference to MRI was 53% and 76%, respectively. The sensitivity of US and US elastography increased with increasing of the grade of muscle atrophy. The sensitivity of US and US elastography in detection of fatty degeneration was slightly better 65% and 85%, respectively. US elastography were more sensitive in evaluation of fatty degeneration in full thickness than in partial thickness rotator cuff tears. In all cases of full thickness tears US with elastography had a 100% sensitivity in assessment of atrophy and fatty degeneration in the reference to MRI. While in partial tears the sensitivity decreased to 66%. The agreement between MRI and US elastography for the grade of fatty degeneration of the supraspinatus was substantial (kappa = 0.78). The interobserver reliability for US was fair (kappa = 0.41), and for US elastography substantial (kappa=0,71).Conclusion. Sonoelastography helps to increase the diagnostic performance of US in identifying and grading fatty degeneration and atrophy of the supraspinatus. US with elastography can be used as a primary modality for fatty changes and atrophy of the supraspinatus.
On the Classification of TI-RADS and Stratification of Signs of Thyroid Cancer According to Ultrasound Data
Authors: Fisenko E. P. , Sich J. P. , Vetsheva N. N. 
Published: February 2019

Objective:a comparative “blind” assessment of the thyroid nodules identified by ultrasound, according to the TI-RADS scale in various modifications.Materials and methods.Retrospective analysis of 149 echograms of thyroid nodules by three independent experts was performed (the experience of ultrasound of thyroid ultrasound for more than 7 years).Results. In solid nodules, high-specific large (more than 94%) and small (more than 90%) ultrasound signs of thyroid cancer have been identified. The nodes are stratified according to the TI-RADS system: 1 – in the modification J.Y. Kwak et al. (2011), 2 – according to the proposed system, taking into account small ultrasound signs of thyroid cancer. High reproducibility of both systems are obtained. In the first system 13.7% of cancer nodes fell into the category of TI- RADS 3 (benign formations), in the second system only 5% of cancers fell into the category of TI-RADS 3, which is important for biopsy selection. The sensitivity of the first system was TI-RADS 82.05%, of the second system – 94.87%.Conclusions.Classification of TI-RADS can be used to interpret the ultrasound results of thyroid nodules, taking into account both the main large and small ultrasound signs of cancer. For its validation in our country, it is necessary to further broad discussion of the proposed TI-RADS system.
Cardiac multispiral computed tomography: optimization of examination’s protocol for non-invasive cardaic mapping before catheter ablation of atrial fibrrillation
Authors: Kashtanova N. Yu. , Gruzdev I. S. , Kondrat’ev E. V. , Artyukhina Е. A. , Yashkov М. V. , Revishvili A. Sh. 
Published: February 2019

Purpose:to develop optimal technique of cardiac multidetector computed tomography (MDCT) before noninvasive cardiac mapping before cateter ablation of atrial fibrillation.Materials and methods.94 patients with atrial fibrillation were included in study (60 males, 34 females; mean age = 58.3 ± 10 years; mean body mass index (BMI) = 29.9 ± ± 4.8). The patients were divided into 2 groups: I – 80 patients who underwent computer tomography (CT)-protocol for noninvasive cardiac mapping with standard contrast enhancement (single-bolus protocol); II – 14 patients who underwent CT with modified contrast enhancement technique with preliminary contrast injection (prebolus). To detect thrombotic masses in the left auricle the low-dose delayed phase was performed. The analysis of individual features of pulmonary veins, left atrium and adjacent structures was performed. Contrast enhancement of heart chambers was assessed by mean attenuation and homogeneity measurement.Results and discussion.The typical anatomy of the right pulmonary veins was in 93.6% of cases; right middle pulmonary vein in 5.3%; right segmental veins in 1.1%. The typical anatomy at the left side was in 57.4% of cases; common vestibulum of the left pulmonary veins in 18.1%; common left trunk in 24.5%. Volume enlargement of the left atrium (LA) was in 96.8% of patients. In 6 cases left auricle thrombosis was suspected, low-dose delayed phase was performed. In 2 cases filling defects in left auricle persisted, thrombosis was proved by transesophageal echocardiography. With the single-bolus injection protocol the contrast enhancement of left heart chambers was best (mean attenuation of blood in LA = 296 ± 84 HU, in left ventricle (LV) = 286 ± 83 HU), but the contrast enhancement and homogeneity of the chambers were insufficient (mean attenuation of blood in right atrium (RA) = 179 ± 97 HU, in right ventricle (RV) = 176 ± 80 HU). With prebolus protocol the contrast enhancement and homogeneity of all chambers were optimal (mean attenuation of blood in LA = 259 ± 31 HU, in LV = 286 ± 83 HU, in RA = 270 ± 92 HU, in RV = 253 ± 80 HU). This allowed making more accurate epi-endocardial heart models in the noninvasive cardiac mapping and operation planning.Conclusion.MDCT with standard contrast enhancement protocol provides detailed information about anatomy and size of pulmonary veins, the left atrium volume, the presence of intracardiac masses (including thrombotic masses), the anatomy of adjacent structures. The modified contrast enhancement technique with preliminary contrast injection (prebolus) allows to receive optimal contrast enhancement of all heart chambers and to make high accurate epi-endocardial models of both the right and left sides of the heart in case of noninvasive cardiac mapping.
The diagnostics intracranial hypertension using ultrasound of the optic nerve channel in patients with intracranial hemorrhage
Authors: Petrikov S. S. , Andreytseva М. I. , Khamidova L. Т. , Solodov A. A. 
Published: February 2019

The purpose.To determine relationshipsbetween the value of intracranial pressure obtained by direct measurement (using ICP sensors), the optic nerve sheath diameter (ONSD), and the optic nerve diameter obtained by ultrasound; to define a threshold for ONSD for diagnosing ICP more than 20 mm Hg.Materials and methods.33 patients with traumatic and non-traumatic intracranial hemorrhages were examined. All patients were continuously monitored by ICP and ultrasound of the optic nerve channel. We evaluated the ONSD and optic nerve diameter (OND) using ultrasound. 16 healthy volunteers were examined to determine the normal values of ONSD and OND.Results.All patients were divided into 2 groups depending on the type of ICP dynamics. Group 1 (n = 26): an initial value of ICP is less than 20 mm Hg, group 2 (n = 7): initially high ICP values. Group 1 was divided into 3 subgroups: 1a (n = 7) – ICP did not increase during the whole monitoring period, 1b1 (n = 10) – ICP transiently increased in the postoperative period and normalized after treating, 1b2 (n = 9) – refractory intracranial hypertension was developed in the postoperative period. Group 2 was divided into two subgroups: 2a (n = 4) – ICP normalized in the postoperative period, 2b (n = 3) – refractory intracranial hypertension was developed in the postoperative period. There was a significant relationship between ICP and ONSD (Spearman n = 318, R = 0.31, p < 0.001; Kruskal– Wallis p < 0.001)in all groups of patients. The diameter of the optic nerve was the same for both groups: healthy volunteers and the experimental group (Spearmann = 334, R = 0.0054, p = 0.96). The optimal value of ONSD for detection the ICP > 20 mm Hg was morethan 5.8 mm.Conclusion.The ultrasound of the optic nerve channel can be an additional screening non-invasive diagnostic method for patients with intracranial hypertension.
Contribution of professor S.A. Reinberg (1897–1966) in domestic medicine. On the 120th anniversary of birthday
Authors: Morgoshiia T. Sh. , Syroezhin N. A. 
Published: February 2019

The article presents the main milestones in the life and work of Professor Samuel Aronovich Reinberg (1897–1966). Little-known facts from the life of the scientist are noted. It is noted that in 1930–1943 he headed the Department of radiology of the Leningrad Institute of advanced medical training. In 1927, he founded the world's first Department of pediatric radiology at the Leningrad Institute of maternal and infant protection and led it until 1939.the article shows that in 1943–1950, the Director of the Moscow x-ray Institute and at the same time headed the Department of radiology of CIU (until 1966). S.A. Reinberg is the author of 410 works published in 13 languages, including 25 manuals, textbooks and monographs, mainly on the problems of clinical radiology. The main work of S.A. Reinberg is analyzed – the monograph “X-ray Diagnostics of bone and joint diseases”, which was published in 4 editions, was awarded the Lenin prize. S.A. Reinberg developed the problem of violation of bronchial patency. He has a priority in the study of the history of the organization and development of radiological service in the USSR, as well as in the development of lifetime radiography in humans and the opening of the sphincter apparatus of the fallopian tubes. Noted that he was one of the founders of the all-Union and all-Russian scientific society of roentgenologists and radiologists, Chairman of the Moscow scientific society of roentgenologists and radiologists, program speaker at the all-Union Congress of roentgenologists and radiologists starting from the 2nd Congress in 1924 the Editor of the editorial Department of “Radiology” 2nd edition BME. Analyzes the pedagogical activity of Professor S.A. Reinberg. The work noted that he was awarded the order of the Red Banner of Labor, Red Star, “Badge of Honor” and a number of medals of the USSR.
Resting state fMRI in pre-surgical brain mapping. Literature review
Authors: Smirnov A. S. , Sharaev M. G. , Melnikova-Pitskhelauri T. V. , Zhukov V. Yu. , Bikanov A. E. , Sharova E. V. , Pogosbekyan E. L. , Turkin A. M. , Fadeeva L. M. , Pitskhelauri D. V. , Kornienko V. N. , Pronin I. N. 
Published: February 2019

Today, functional magnetic resonance imaging (fMRI) allows to plan surgery based on the topography of functionally important areas of the human brain cortex and tumor. This method can complement the surgical strategy with significant clinical information. The stimulus-dependent fMRI with motor and language paradigms is generally used for preoperative planning. The study outcome depends on the patient's ability to perform tasks paradigm, which is broken in brain tumors. In an attempt to overcome this problem, resting-state fMRI (rs-fMRI) is used for brain mapping. Rs-fMRI is based on the measurement of spontaneous fluctuations of the BOLD signal (blood oxygen level-dependent), representing the functional structure of the brain. In contrast to stimulus-dependent fMRI, rs-fMRI provides more complete information about functional architecture of the brain. rs-fMRI is used in conditions where the results of stimulusdependent fMRI may be falsely positive or in the absence of the possibility of its implementation. In aggregate, both methods significantly expand the efficiency and specificity of preoperative planning.
The role of future information in control system design for shipboard power systems
Authors: Opila D F , Stevens J D , Cramer A M 
Published: February 2019

Both naval and commercial ships are incorporating new power and energy system technologies to improve fuel economy and performance while servicing high power pulsed loads. These assets can be best utilized with load demand forecasting and/or prediction, especially when considering limits on generator ramp rates, distribution lines, and energy storage capacity. Obtaining future load demand data and designing a controller to accommodate it can be challenging, but with potentially large payoff. However, this information is not useful in all cases. This paper develops a method to quantify the potential value of future information depending on the specific power system characteristics. This quantitative approach aids designers in deciding how and when to deploy future forecasting in controller design, and provides insight into the potential benefits of these more complex controllers. To quantify this trade off, two optimization-based control methods are developed. One uses only current information, while the other has an exact forecast of the future. As examples, the method is applied to a notional naval ship and drill platform service vessel with representative power and energy system architectures under indicative operational load demands.
PENTINGNYA ANALISA RUPTURE / REKAHAN GEMPA BUMI SEBAGAI PEDOMAN DALAM PERENCANAAN PERUMAHAN DAN PERMUKIMAN
Authors: Siska Deassy 
Published: February 2019

Gempa bumi adalah suatu bencana berupa getaran tanah yang tidak dapat diperkirakan kapan dan dimana akan muncul. Ketika sebuah gempa bumi muncul, dampak yang ditimbulkan bervariasi tergantung pada kekuatan getaran yang terjadi. Akibat yang ditimbulkan oleh gempa dapat terlihat dari kondisi pasca gempa seperti kerusakan struktur dan infrastruktur serta jumlah korban jiwa. Untuk dapat mencegah atau mengurangi resiko dari dampak sebuah bencana gempa bumi maka perlu adanyatindakan mitigasi yang tepat pasca bencana khususnya di kawasan permukiman. Pada saat terjadinya gempa, gelombang seismik merambat membentuk areal rupture atau rekahan yang simetris dari mulai episentrum hingga jarak tertentu yang membentuk jalur rekahan gempa di sepanjang bidang patahan. Jalur rekahan gempa ini memiliki struktur tanah yang cenderung tidak stabil bila dibandingkan dengan kawasan lainnya diluar area rekahan. Dengan menganalisa jalur rekahan gempa, maka perencanaan perumahan dan permukiman dengan struktur bangunan tahan gempa diharapkan dapat lebih terfokus pada wilayah yang diperkirakan memiliki struktur tanah yang tidak stabil dan berpotensi terjadi hentakan serta rekahan yang besar. Sehingga lebih tepat sasaran dan dapat meminimalisir kerusakan bangunan dan korban jiwa pada saat terjadinya gempa bumi. Teknik penelitian ini menggunakan perangkat lunak Matlab 7.10 (R2010a), Geopsy dan Aplikasi array response function untuk menentukan arah dan jalur serta luasan kawasan rekahan.
Analisa Kebisingan dan Studi Akustik dalam Tatanan Bangunan
Authors: Siska Deassy 
Published: February 2019

Abstrak Salah satu konsep kenyamanan hunian yang selalu dicari setiap orang adalah tenang dan jauh dari kebisingan.Kebisingan adalah salah satu sumber dari pencemaran bunyi.Kebanyakan orang sangat tidak suka dengan keadaan berisik, namun sangat sedikit orang yang peka dengan pencemaran bunyi.Masyarakat Indonesia pada umumnya hanya peduli dengan pencemaran udara, air dan limbah. Asal kata pencemaran adalah proses masuknya polutan ke dalam suatu lingkungan sehingga menurunkan mutu lingkungan. Pencemaran bunyi merupakan peristiwa masuknya sumber bunyi lain yang tidak diinginkan (noise) yang melebihi batasan normal sehingga dapat mengganggu lingkungan, menurunkan tingkat kepekaan indera pendengaran, kesehatan bahkan berdampak pula pada tingkah laku psikologi seseorang. Dampak – dampak yang ditimbulkan ini sifatnya tidak langsung, sehingga masyarakat lebih sering mengabaikannya. Indonesia adalah Negara industri, suara – suara mesin pabrik, stasiun kereta api dan hiruk pikuknya kendaraan bermotor merupakan sumber kebisingan yang paling utama di Negara ini. Dikatakan paling utama karena kepadatan jalan raya setiap saat semakin bertambah.Penataan akustik merupakan solusi dalam permasalahan ini.Dalam penataan bangunan, akustik merupakan sisi yang harus tetap diprioritaskan. Tingkatan prioritasnya sama seperti kita memandang perspektif struktur bangunan dan mekanikal – elektrikal.Kata Kunci: Akustik, , Kebisingan, Pencemaran bunyi, Penataan akustik.
Penerapan Unsur Patung pada Perancangan Lansekap
Authors: Fithri Cut Azmah 
Published: February 2019

Abstrak Pemahaman tentang patung dapat dilihat dari zaman nenek moyang kita, berawal dari zaman purbakala patung sudah dibuat dan dipuja masyarakat tertentu, hingga sekarang patung dinikmati untuk keindahan. Manusia telah mengenal dan menghargai ruang luar sejak manusia hidup berpindah-pindah, mereka membangun permukiman dan memanfaatkan kualitas ruang luar untuk pemujaan, pertemuan, dan tari-tarian. Seni patung adalah sebuah tipe karya tiga dimensi yang bentuknya dibuat dengan metode subtraktif (mengurangi bahan seperti memotong, menatah) atau aditif (membuat model lebih dulu seperti mengecor dan mencetak). Lansekap merupakan sesuatu perencanaan antara manusia dan lingkungan yang mencakup semua elemen alam, baik yang buatan maupun yang alamiah, dengan memperhatikan aspek estetika untuk mendapatkan kesenangan dan kenyamanan.Tujuan seni patung hadir dalam perancangan ruang luar: untuk menciptakan kesan serasi dan harmonis dalam perancangan lansekap. Membentuk simetris dari ruang luar. Dapat menceritakan suatu peristiwa, menghormati dewa atau orang yang dijadikan tauladan. Pada perkembangan selanjutnya patung dibuat untuk monument/peringatan peristiwa suatu bangsa, kelompok atau perorangan. Pada zaman sekarang patung sering diciptakan untuk hiasan lebih bebas dan bervariasi dan diciptakan untuk dinikmati nilai keindahan bentuknya.Kata kunci: patung, lansekap ruang, metoda subtraktif, estetika