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Ditemukan 94 dokumen yang sesuai dengan query
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Asriyanto
Abstrak :
ABSTRAK
Telah dilakukan identifikasi terhadap citra USG payudara normal, benign dan malignant. Diperoleh rentang nilai pixel untuk lesi benign 22-26 dan rentang lesi malignant 37-39. Pada citra USG normal diperoleh nilai pixel fat sebagai acuan (isoechoic) pada rentang 49-55. Diperoleh nilai rasio (a/b) dari panjang (a) dan tinggi (b) lesi untuk kasus benign >1 dan untuk malignant a/b < 1. Evaluasi citra dilakukan dengan menggunakan Software Image-J. Hasil penelitian menunjukkan karakteristik yang berbeda dari beberapa lesi payudara pada citra USG yang sulit diamati secara visual biasa. Metode ini diharapkan dapat membantu diagnosis lesi payudara sebagai upaya deteksi dini kanker payudara. Telah dilakukan filterisasi citra USG payudara dengan Adobe CS6 Extended untuk mendeteksi kehadiran mikrokalsifikasi, citra USG hasil filterisasi berhasil menujukkan kehadiran mikrokalsifikasi yang sebelumnya tidak tampak secara visual.
Abstract
Identification has been done on breast ultrasound image of normal, benign and malignant. Range of pixel values obtained for benign lesions in ranges 22-26 and malignant lesions in ranges 37-39. In the normal ultrasound image obtained pixel value as the reference fat (isoechoic) in the range 49-55. Obtained value of the ratio (a/b) of the length (a) and high (b) cases of benign lesions for > 1 and for malignant (a/b) < 1. Image evaluation performed using Image-J software. The results show different characteristics from multiple breast lesions on ultrasound images are difficult to observe visually normal. This method is expected to aid in the diagnosis of breast lesions as a means of early detection of breast cancer. Filtering has been performed breast ultrasound images with Adobe CS6 Extended to detect the presence of microcalcifications, ultrasound image filtering results successfully showed the presence of microcalcifications that were not perceivable.
2012
T30995
UI - Tesis Open  Universitas Indonesia Library
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Mateer, James R.
New York: McGraw-Hill, 2008
616.075 MAT e
Buku Teks  Universitas Indonesia Library
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Timor-Tritsch, Ilan E.
Philadelphia: Churchill livingstone Elsevier, 2007
618.1 TIM u
Buku Teks  Universitas Indonesia Library
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Jacobson, Jon A.
Philadelphia: Saunders Elsevier, 2007
617.707 JAC f
Buku Teks  Universitas Indonesia Library
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Boca Raton : CRC Pres, 2012
660 HAN
Buku Teks  Universitas Indonesia Library
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Benacerraf, Beryl R.
Philadelphia: Elsevier, 2014
618.1 BEN g
Buku Teks  Universitas Indonesia Library
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New Delhi: Jaypee Brothers Medical, 2014
618.178 ULT
Buku Teks  Universitas Indonesia Library
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Fredouille, Catherine
Abstrak :
Fetal Heart Ultrasound, now in its second edition, has been written as a practical guide for the ultrasound examination of the fetal heart. The fetal heart is considered to be the most important and difficult part of a fetal examination. This book aims not only to clarify and simplify the approach to this examination, but also to define what a normal fetal heart should be, and underline just why this organ remains one of the best warning signs for fetal pathology. It will be useful to trainee and practicing ultrasonographers, ultrasound departments providing obstetric ultrasound services, and obstetricians, gynecologists, radiologists and midwives undertaking course in fetal ultrasonography.
Edinburgh: Elsevier, 2014
618.326 FRE f
Buku Teks  Universitas Indonesia Library
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James Thimoty
Abstrak :
ABSTRAK
Latar Belakang. Penggunaan peripherally inserted central catheter PICC semakin meningkat sesuai kebutuhan bayi prematur dalam pemberian nutrisi parenteral. Penggunaan radiografi standar Rontgen torako abdomen dalam menilai posisi tip PICC yang tepat merupakan baku emas. Namun demikian, radiografi standar tidak selalu akurat dalam memperkirakan posisi tip PICC, tergantung pada posisi ekstremitas dan variasi anatomi masing-masing neonatus, menyebabkan radiasi, membutuhkan biaya yang lebih tinggi, waktu yang lebih lama dan membutuhkan pemeriksaan ulangan apabila posisi tip PICC terlalu dalam masuk ke jantung. Ultrasonografi USG semakin banyak digunakan untuk diagnostik dan prosedur di neonatal intensive care unit NICU karena lebih mudah, aman, murah dan real-time.Tujuan. Penelitian ini bertujuan untuk menilai akurasi penggunaan USG dalam menentukan ketepatan posisi tip PICC dibandingkan dengan radiografi standar. Metode. Penelitian ini merupakan studi diagnostik yang dilakukan pada bulan April-Mei 2017 di NICU. Pemasangan PICC menggunakan prosedur standar di NICU dan kemudian posisi tip PICC dievaluasi menggunakan USG sebelum dilakukan radiografi standar. Analisis menggunakan table 2x2 untuk menilai akurasi diagnostik USG dibandingkan radiografi standar dalam menilai posisi tip PICC.Hasil. Sebanyak 29 neonatus termasuk dalam penelitian ini dengan rerata usia gestasi 31,7 minggu 26 sampai 41 minggu dan rerata berat lahir 1618,9 g 600 sampai 3750 g . Kesesuaian antara radiografi standar dan ultrasonografi untuk posisi tip PICC terjadi pada 27 neonatus 93,1 . Sensitivitas ultrasonografi dalam menentukan tip PICC adalah 88,89 , dengan spesifisitas 95 dan ultrasonografi memiliki akurasi diagnostik 93,1 .Simpulan. USG memiliki akurasi diagnostik yang baik untuk mengindentifikasi posisi tip PICC, meminimalkan paparan radiasi dan meminimalkan manipulasi PICC di NICU.Kata kunci: USG, Radiografi, PICC, Neonatus, NICU
ABSTRACT
Background. The use of peripherally inserted central catheter PICC has became increasingly common to facilitate the administration of parenteral nutrition in preterm neonates. The use of standard radiograph X ray of the abdominal thorax in assessing the correct position of peripherally inserted central catheter PICC line tips is a gold standard. However, standard radiograph can not always be accurate depending on the position of the extremities and variations of anatomy of each neonates, cause radiation, require higher cost, longer time and repeat when position is not appropriate. Ultrasound are becoming increasingly use for diagnostic and procedure in neonatal intensive care unit NICU because more easy, safer, cheaper, and real time.Objectives. This study aims to assess the accuracy of ultrasound use in determining the accuracy of PICC tip positions compared to standard radiograph.Methods. This was a diagnostic study to examine the placement of PICC in neonates between April and May 2017 in NICU. PICC were placed using standard procedure in NICU and then position of PICC tip were evaluated using ultrasound immediately before standard radiograph is performed. A 2x2 table was constructed to compare the two modalities ability to detect tip PICC position.Results. A total of 29 neonates were included in this study with mean of gestation of 31.7 weeks 26 to 41 weeks and mean of birth weight 1618.9 g 600 to 3750 g . Concordance between standard radiograph and ultrasound for PICC tip position occurred in 27 neonates 93.1 . Sensitivity of ultrasound in determining PICC tip was 88.89 , with a specificity of 95 and ultrasound had a diagnostic accuracy 93.1 .Conclusion. Ultrasound has a good diagnostic accuracy to indentify tip position of PICC, minimizing exposure of radiation and minimize manipulation of PICC in NICU. Keywords Ultrasound, Radiograph, PICC, Neonates, NICU
2017
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Muhammad Dani Supardan
Abstrak :
The use of ultrasound in extraction process creates novel and interesting methodologies, which are often complementary to conventional extraction methods. In the present study, the use of ultrasound to extract oleoresin from ginger (Zingiber officinaleR.) was investigated. The extraction was performed by using ethanol as solvent in the presence of ultrasonic irradiations operating at frequency of 42 kHz at extraction temperature of 60oC. The oleoresin extracted was in the form of dark thick liquid with specific ginger flavor. Based on GC-MS analysis, the use of ultrasound was not give an effect on alteration of main component in ginger oleoresin. The main component in extracted ginger oleoresin was zingerone. Gingerol as one of the pungent principle of the ginger oleoresin was not detected due to decomposition of gingerol at a temperature above 45oC. Extraction rate of ultrasound-assisted extraction was about 1.75 times more rapid than a conventional system based on soxhlet. The scanning electron microscopy images provided more evidence for the mechanical effects of ultrasound, mainly appearing on cells? walls and shown by the destruction of cells, facilitating the release of their contents.
Direktorat Riset dan Pengabdian Masyarakat UI, 2011
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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