Susanne Jochum

Publications of Susanne Jochum

• Vergleich der diagnostischen Genauigkeit der Ganzkörper-MRT und Ganzkörper-CT bei malignem Melanom im Stadium III/IV.

  Authors: Daniel Hausmann, Susanne Jochum, Jochen Utikal, Richard Christian Hoffmann, Christian Zechmann, Kurt Wolfgang Neff, Sergij Goerdt, Stefan Oswald Schoenberg, Dietmar Jörg Dinter

  Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG. 03/2011; 9(3):212-22.

• Comparison of the diagnostic accuracy of whole-body MRI and whole-body CT in stage III/IV malignant melanoma.

  Authors: Daniel Hausmann, Susanne Jochum, Jochen Utikal, Richard Christian Hoffmann, Christian Zechmann, Kurt Wolfgang Neff, Sergij Goerdt, Stefan Oswald Schoenberg, Dietmar Jörg Dinter

  Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG. 03/2011; 9(3):212-22.

  Malignant melanoma (MM) is dramatically increasing in light-skinned populations worldwide. Staging and regular follow-up examinations are essential. The purpose of this study was to compare theMalignant melanoma (MM) is dramatically increasing in light-skinned populations worldwide. Staging and regular follow-up examinations are essential. The purpose of this study was to compare the diagnostic accuracy of whole-body MRI with the standard diagnostic algorithm (whole-body CT and brain MRI) in patients with stage III/IV MM. A group of 50 consecutively admitted patients with stage III/IV MM were included in the study. Whole-body CT and brain MRI scans were performed. Additionally, all patients underwent a whole-body MRI (1.5 Tesla Magnetom Avanto, Siemens Healthcare Sector, Erlangen). The findings were compared on a lesion-by-lesion basis as part of clinical routine follow-up. 33 patients received a follow-up CT and were evaluated. Overall, 824 lesions were detected. The sensitivity of whole-body MRI was observer-dependent. MRI was slightly less sensitive than CT according to the findings of the two most experienced observers (73.4 % vs. 78.2 %, p = 0.0744). CT was significantly more sensitive in the detection of small (1-5 mm) pulmonary nodules (2.9 % vs. 66.9 %, p < 0.0001). Yet overall, MRI was significantly more specific than CT (83.4 % vs. 50.4 %, p < 0.0001). Whole-body MRI in compliance with standard requirements for the observers (high level of experience) should be considered as an appropriate alternative to CT without ionizing radiation, particularly for young patients with advanced MM.

• Dual energy computed tomography angiography of a pulmonary embolized port catheter fragment.

  Authors: Thomas Henzler, Steffen Diehl, Susanne Jochum, Tim Sueselbeck, Stefan O Schoenberg, Christian Fink

  Journal of cardiovascular medicine (Hagerstown, Md.). 01/2011; 12(1):62-3.

  We present the case of a 64-year-old woman with a history of breast cancer who underwent explantation of a dysfunctional intravenous port system. At surgery a broken port catheter was found. A portWe present the case of a 64-year-old woman with a history of breast cancer who underwent explantation of a dysfunctional intravenous port system. At surgery a broken port catheter was found. A port catheter fragment embolized into the segmental artery of the posterobasal segment of the right inferior lobe, causing a wedge-shaped segmental perfusion defect in the corresponding segment. The catheter was removed by catheter intervention with a goose-neck snare.

• Dual-Energy CT Angiography in Peripheral Arterial Occlusive Disease.

  Authors: Carolin Brockmann, Susanne Jochum, Maliha Sadick, Kurt Huck, Peter Ziegler, Christian Fink, Stefan Schoenberg, Steffen Diehl

  Cardiovascular and interventional radiology. 02/2009;

  We sought to study the accuracy of dual-energy computed tomographic angiography (DE-CTA) for the assessment of symptomatic peripheral arterial occlusive disease of the lower extremity by using theWe sought to study the accuracy of dual-energy computed tomographic angiography (DE-CTA) for the assessment of symptomatic peripheral arterial occlusive disease of the lower extremity by using the dual-energy bone removal technique compared with a commercially available conventional bone removal tool. Twenty patients underwent selective digital subtraction angiography and DE-CTA of the pelvis and lower extremities. CTA data were postprocessed with two different applications: conventional bone removal and dual-energy bone removal. All data were reconstructed and evaluated as 3D maximum-intensity projections. Time requirements for reconstruction were documented. Sensitivity, specificity, accuracy, and concordance of DE-CTA regarding degree of stenosis and vessel wall calcification were calculated. A total of 359 vascular segments were analyzed. Compared with digital subtraction angiography, sensitivity, specificity, and accuracy, respectively, of CTA was 97.2%, 94.1%, and 94.7% by the dual-energy bone removal technique. The conventional bone removal tool delivered a sensitivity of 77.1%, a specificity of 70.7%, and an accuracy of 72.0%. Best results for both postprocessing methods were achieved in the vascular segments of the upper leg. In severely calcified segments, sensitivity, specificity, and accuracy stayed above 90% by the dual-energy bone removal technique, whereas the conventional bone removal technique showed a substantial decrease of sensitivity, specificity, and accuracy. DE-CTA is a feasible and accurate diagnostic method in the assessment of symptomatic peripheral arterial occlusive disease. Results obtained by DE-CTA are superior to the conventional bone removal technique and less dependent on vessel wall calcifications.

• Graph-Matching Based CTA.

  Authors: Dmitry Maksimov, Jürgen Hesser, Carolin Brockmann, Susanne Jochum, Tiina Dietz, Andreas Schnitzer, Christoph Düber, Stefan O. Schoenberg, Steffen Diehl

  IEEE Trans. Med. Imaging. 01/2009; 28:1940-1954.

• Graph-matching-based computed tomography angiography in peripheral arterial occlusive disease.

  Authors: Carolin Brockmann, Susanne Jochum, Jürgen Hesser, Dzmitry Maksimov, Andreas Schnitzer, Christel Weiss, Patricius Diezler, Stefan O Schoenberg, Steffen Diehl

  Clinical imaging. 34(5):367-74.

  The objective of this study is to compare a graph-matching-based software and a conventional tool for postprocessing of computed tomography angiography (CTA) in correlation with the gold standardThe objective of this study is to compare a graph-matching-based software and a conventional tool for postprocessing of computed tomography angiography (CTA) in correlation with the gold standard digital subtraction angiography. Sensitivity, specificity, accuracy, and interobserver agreement increased from 80.3% to 92.9%, from 69.1% to 92.4%, from 73.5% to 92.8%, and from 0.45 to 0.96, respectively, using the graph-matching-based technique. Graph-matching-based CTA increases sensitivity, specificity, accuracy, and interobserver agreement in comparison to a conventional bone elimination tool in the assessment of peripheral arterial occlusive disease.