Cross-Sectional Imaging Techniques: The Use of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) in the Management of Germ Cell Tumors

2008 ◽  
pp. 287-303 ◽  
Author(s):  
M. De Santis ◽  
G. Strau ◽  
M. Bachner
1996 ◽  
Vol 86 (3) ◽  
pp. 123-125 ◽  
Author(s):  
PM Logan ◽  
DG Connell ◽  
DL Janzen

The authors presented the computed tomography and magnetic resonance imaging appearances of a painful os cuboideum secundarium. To the authors' knowledge, this is the first report of the cross-sectional imaging appearance of this condition, and serves to underline the utility of computed tomography and magnetic resonance imaging in the investigation of foot pain.


2016 ◽  
Vol 6 ◽  
pp. 33
Author(s):  
Matthew Neill ◽  
Hearns W Charles ◽  
Jonathan S Gross ◽  
Sean Farquharson ◽  
Amy R Deipolyi

Despite progress in noninvasive imaging with computed tomography and magnetic resonance imaging, conventional angiography still contributes to the diagnostic workup of oncologic and other diseases. Arteriography can reveal tumors not evident on cross-sectional imaging, in addition to defining aberrant or unexpected arterial supply to targeted lesions. This additional and potentially unanticipated information can alter management decisions during interventional procedures.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sang Wha Kim ◽  
Adams Hei Long Yuen ◽  
Cherry Tsz Ching Poon ◽  
Joon Oh Hwang ◽  
Chang Jun Lee ◽  
...  

AbstractDue to their important phylogenetic position among extant vertebrates, sharks are an invaluable group in evolutionary developmental biology studies. A thorough understanding of shark anatomy is essential to facilitate these studies and documentation of this iconic taxon. With the increasing availability of cross-sectional imaging techniques, the complicated anatomy of both cartilaginous and soft tissues can be analyzed non-invasively, quickly, and accurately. The aim of this study is to provide a detailed anatomical description of the normal banded houndshark (Triakis scyllium) using computed tomography (CT) and magnetic resonance imaging (MRI) along with cryosection images. Three banded houndsharks were scanned using a 64-detector row spiral CT scanner and a 3 T MRI scanner. All images were digitally stored and assessed using open-source Digital Imaging and Communications in Medicine viewer software in the transverse, sagittal, and dorsal dimensions. The banded houndshark cadavers were then cryosectioned at approximately 1-cm intervals. Corresponding transverse cryosection images were chosen to identify the best anatomical correlations for transverse CT and MRI images. The resulting images provided excellent detail of the major anatomical structures of the banded houndshark. The illustrations in the present study could be considered as a useful reference for interpretation of normal and pathological imaging studies of sharks.


Author(s):  
Y. Mykychak ◽  
D. Kozhokar ◽  
I. Yusifli ◽  
A. Morkovkina ◽  
R. Tammo ◽  
...  

Pulmonary vein (PV) stenosis is a rare disease with high recurrence and mortality rates. Objective. This study was aimed to evaluate the diagnostic accuracy of echocardiography versus cross-sectional modalities. Material and methods. Our study includes 11 consecutive patients who underwent a comprehensive PV anatomy assessment between April 2018 and June 2019 at Ukrainian Children’s Cardiac Center, Kyiv. Echocardiographic studies of each pulmonary vein followed by computed tomography (CT) or magnetic resonance imaging (MRI) were performed in all patients. A total of 27 CT/MRI studies were performed. Results. There were four patients whose echocardiography findings were completely confirmed by CT/MRI method. In some patients significant stenosis was underestimated by echocardiography. Sensitivity and specificity were 86.4 and 88.9 for echo, as well as 100 and 94.4 for CT/MRI, respectively. Conclusion. This study recognizes the limitations of echocardiography as an imaging tool for pulmonary veins morphology assessment. Cross-sectional studies overcome these limitations and provide excellent morphological as well as functional (MRI) evaluation of pulmonary veins.


2020 ◽  
Vol 48 (1) ◽  
pp. 3-14
Author(s):  
Joko Suprayitno ◽  
Reno Budiman ◽  
Tommy Ruchimat

Latar Belakang. Insidensi apendisitis perforasi di dunia mencapai 2 per 10.000 kelahiran hidup, untuk proporsi apendisitis perforasi sekitar 25%. Kasus apendisitis di Indonesia berdasarkan data Kementerian Kesehatan RI pada tahun 2009 sebesar 596.132 kasus dengan persentase 3.36% dan meningkat pada tahun 2010 menjadi 621.435 kasus dengan persentase 3.53%. Sedangkan insidensi  di RS Hasan Sadikin  pada tahun 2017 mencapai 83% pasien yang datang dengan keluhan apendisitis telah mengalami perforasi. Pemeriksaan radiologik seperti computed tomography scan (CT), magnetic resonance imaging (MRI) ataupun ultrasonography (USG) memiliki sensitifitas dan spesifitas yang tinggi untuk mendiagnosis perforasi apendisitis, tetapi alat–alat ini tidak selalu tersedia di institusi–institusi kesehatan negara berkembang. Fibrinogen sebagai  faktor koagulasi yang pertama kali ditemukan dalam beberapa penelitian berpotensi digunakan sebagai prediktor perforasi pada pasien apendisitis, pemeriksaan fibrinogen dapat dilakukan sewaktu-waktu, memberikan hasil yang lebih cepat dengan harga yang lebih murah dibandingkan dengan pemeriksaan penunjang lain. Metode. Penelitian observasional analitik dengan pendekatan cross-sectional. Subjek pasien apendisitis periode 1 April 2018 – 31 Desember 2018 yang datang ke Installasi Gawat Darurat RSUP Dr. Hasan Sadikin Bandung dan bersedia mengikuti penelitian. Pasien yang didiagnosis kerja awal sebagai apendisitis akut atau pasien dengan appendisits perforasi dengan gejala peritonitis lokal atau peritonitis difus setelah dilakukan pemeriksaan klinis dan laboratorium. Pasien dilakukan  pemeriksaan fibrinogen serum preoperatif, lalu dilakukan operasi dan dicatat hasil temuan operasi yaitu yang mengalami perforasi dan yang tidak mengalami perforasi. Dilakukan pengelompokkan data setelah jumlah subyek penelitian terpenuhi. Hasil. Sebanyak 40 pasien (25 laki-laki, 15 perempuan) terdiagnosis apendisitis berdasarkan Alvarado Score, yang terdiri dari 20 pasien apendisitis akut dan 20 pasien apendisitis perforasi. Akurasi kadar fibrinogen serum dalam memprediksi terjadinya perforasi sebesar 85%. Nilai sensitivitas 90%, nilai spesifisitas 80%. Berdasarkan analisis kurva ROC diperoleh nilai Area Under Curve (AUC) sebesar 0,865 (p = 0,001). Menunjukkan bahwa kadar fibrinogen serum memiliki kemampuan diskriminasi yang tinggi dalam memprediksi terjadinya perforasi pada pasien apendisitis. Kesimpulan. Kadar fibrinogen serum yang meningkat dapat digunakan sebagai prediktor terjadinya perforasi pada pasien apendisitis. Kata kunci. Apendisitis perforasi, fibrinogen, prediktor (ISSN 2723-7494 J Bedah Indonesia. 2020;48:3-14)


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