Ein neuer Ansatz in der Magnetresonanztomographie der Lunge mit einer ultrakurzen Turbo-Spin-Echo-Sequenz (UTSE)

Lutterbey, G.; Gieseke, Jürgen; Sommer, T.; Keller, E.; Kuhl, Christiane K.; Schild, Hans H.

doi:10.1055/s-2007-1015677

Cited by 19 publications

(11 citation statements)

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“…In T-staging, central lung cancers >10 mm can be detected even better than peripheral tumours [1,2,10,29].…”

Section: Lung Cancer (See Also Other Chapters)mentioning

confidence: 97%

“…Rapid acquisition of spin-echo images may produce good T1-weighted images during a breath-hold, so that contrast-enhanced dynamic studies are feasible [1,7,23,28,29]. Thus, even emergency care patients can be examined within few minutes prior to and after contrast ( fig.…”

Section: Magnetic Resonance (Mr) Imaging Of the Chest: State-of-the-amentioning

confidence: 99%

“…New fast sequences allow for better evaluation of interstitial lung changes, as well as cine-images of the breathing lung with the moving diaphragm and chest wall during controlled inspiration and expiration in patients with bullous emphysema and possible surgical therapy [1,21,29,41]. Although spiral CT provides excellent 3D-visualization of pulmonary lesions, vascular abnormalities within the lungs like arteriovenous malformations in Osler disease are displayed by MR angiography with great accuracy [4,17,51].…”

Section: Parenchymal Lung Diseasesmentioning

confidence: 99%

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Magnetic resonance (MR) imaging of the chest: state-of-the-art

Bittner¹,

Félix²

1998

Eur Respir J

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To date, magnetic resonance (MR) is established as an imaging modality in the diagnosis of chest diseases. Because of its excellent distinction of vessels and soft tissue, MR can be performed as the primary imaging procedure before computed tomography in patients with suspected vascular lesions, mediastinal masses, hilar lesions, and pathological changes of the pleura and the chest wall. In these cases, MR is able to provide all the necessary diagnostic information. In other patients, a limited number of MR images may be helpful in cases of equivocal or confusing CT or clinical findings. More detailed information can be obtained, using surface coils or special imaging sequences, i.e. high resolution MR images of the pleura or angiographic images of mediastinal and pulmonary vasculature. From a clinical viewpoint, the most important task for thoracic magnetic resonance nowadays is the pretherapeutic evaluation of intrathoracic masses, the differential diagnosis of benign versus malignant lesions, and the accurate documentation of tumour extent in malignancies including three-dimensional-display to improve surgical or radiation planning. Future directions in thoracic magnetic resonance will be predominantly influenced by postprocessing approaches, specialized imaging techniques, and magnetic resonance-guided interventional applications.

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“…In T-staging, central lung cancers >10 mm can be detected even better than peripheral tumours [1,2,10,29].…”

Section: Lung Cancer (See Also Other Chapters)mentioning

confidence: 97%

Section: Magnetic Resonance (Mr) Imaging Of the Chest: State-of-the-amentioning

confidence: 99%

Section: Parenchymal Lung Diseasesmentioning

confidence: 99%

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Magnetic resonance (MR) imaging of the chest: state-of-the-art

Bittner¹,

Félix²

1998

Eur Respir J

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“…Respiratory gating should be complemented by diastolic electrocardiogram (ECG) triggering [10,11]. Prospective respiratory gating is recommended for T2-weighted fast spin echo (TSE) sequences, while respiratory compensation techniques such as ROPE have proven effective in T1-weighted sequences [12].…”

Section: Breath-hold Imaging and Improved Breathing Correctionsmentioning

confidence: 99%

New imaging techniques in the treatment guidelines for lung cancer

Schaefer-Prokop¹,

Prokop²

2002

Eur Respir J

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New imaging techniques in the treatment guidelines for lung cancer. C. SchaeferProkop, M. Prokop. #ERS Journals Ltd 2002. ABSTRACT: Computed tomography (CT) remains the main imaging technique for the preoperative staging and post-therapeutic evaluation of bronchogenic carcinoma. Spiral CT has already overcome some of the problems encountered with central or more extensive tumours. Multislice CT offers further improvement and allows for scanning of the whole chest within a single breath-hold using a thin-section high-resolution technique. Problem-adapted sections in arbitrary directions become available and provide an excellent spatial resolution. One can expect improved accuracy for the evaluation of transfissural tumour growth, chest wall involvement, mediastinal infiltration and lymph node staging.Despite recent advances in magnetic resonance (MR) techniques for imaging the chest, the role of MR for staging of bronchogenic carcinoma remains limited. It offers advantages such as the assessment of chest-wall involvement or mediastinal involvement in patients in whom CT remains equivocal. Lymph-node-specific MR contrast agents offer new diagnostic potential for the assessment of metastatic disease.New techniques for the display of three-dimensional data sets include volume rendering and virtual bronchoscopy. These techniques represent new tools for the evaluation and demonstration of pathology within the central tracheobronchial tree. Their most important application is the guidance of bronchoscopic biopsies.The assessment of an indeterminate pulmonary nodule is frequently based on positron emission tomography imaging. As an alternative, nodule vascularization (contrast enhancement patterns on CT or magnetic resonance imaging (MRI)), calcifications (absorption characteristics at various X-ray energies on CT or dual energy radiography), and morphological features (high resolution imaging at CT) can be used as the basis for nodule differentiation. The dynamics of contrast enhancement in CT or MRI can also be used for the assessment of tumour viability after chemotherapy.Lung cancer screening programmes are still controversial. Low-dose computed tomography scanning and computed assisted detection algorithms based on chest radiographs or computed tomography scans form the technical basis for such projects.

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“…The combination of a fast T1-weighted gradient-echo imaging protocol in breathhold but with limited spatial resolution (T1-GRE) and a high resolution T2-weighted fast spin-echo sequence with respiratory triggering (T2-TSE) was expected to reduce the influence of breathing artefacts and to provide images in T1-and T2-contrast. Similar sequences have already been introduced for MRI studies of the lung, but the effects of artefacts on the imaging quality have not been studied systematically thus far [1,18,19,20,21]. Based on a semi-quantitative approach, we evaluated the artefacts and their impact on the visualisation of anatomical structures on ten lung MRI acquired from healthy volunteers.…”

Section: Introductionmentioning

confidence: 99%

Analysis of artefacts and detail resolution of lung MRI with breath-hold T1-weighted gradient-echo and T2-weighted fast spin-echo sequences with respiratory triggering

et al. 2001

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The aim of this study was to evaluate feasibility and limitations of two MR sequences for imaging of the lung using a semi-quantitative rating scale. Ten healthy volunteers were assessed with a breath-hold T1-weighted gradient-recalled-echo (TR/TE=129/2.2 ms, matrix 173 x 256) and a T2-weighted turbo spin-echo (TSE) sequence with respiratory triggering (TR/TE=3000-5000/120 ms, matrix 270 x 512) in axial 6-mm slices. The T1-weighted GRE protocol included a pre-saturation pulse over the mediastinal structures. Artefacts and resolution of vessel/airway structures in each lung segment were evaluated by two observers (10 volunteers, 180 segments). Cardiac and vessel pulsation artefacts predominated on T1-weighted GRE, respiration artefacts on T2-weighted TSE (lingula and middle lobe). Pre-saturation of the mediastinum reduced pulsation artefacts on T1-weighted GRE. T1-weighted GRE images were improved by bright flow signal of vessels, whereas image quality of T2-weighted TSE was reduced by black-blood effects in central parts of the lung. Delineation of lung periphery and the mediastinum was superior with T2-weighted TSE. Segmental/sub-segmental vessels (up to fourth/fifth order) and bronchi (up to third order) were identified. All 180 lung segments were imaged in diagnostic quality with at least one of the two sequences (T1-weighted GRE not diagnostic in 9 of 180, T2-weighted TSE in 4 of 180). Both sequences were found to be complementary: superior identification of gross lung anatomy with T1-weighted GRE and higher detail resolution in the periphery and the mediastinum with T2--weighted TSE.

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Ein neuer Ansatz in der Magnetresonanztomographie der Lunge mit einer ultrakurzen Turbo-Spin-Echo-Sequenz (UTSE)

Abstract: Using UTSE of the lung, MRT can produce images of good quality. Compared with CT, contrast is better with MRT, offering diagnostic advantages for MRT.

Cited by 19 publications

References 0 publications

Magnetic resonance (MR) imaging of the chest: state-of-the-art

Magnetic resonance (MR) imaging of the chest: state-of-the-art

New imaging techniques in the treatment guidelines for lung cancer

Analysis of artefacts and detail resolution of lung MRI with breath-hold T1-weighted gradient-echo and T2-weighted fast spin-echo sequences with respiratory triggering

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