Novel imaging techniques in staging oesophageal cancer

Abstract

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Comparison of gross target volumes based on four‐dimensional CT, positron emission tomography‐computed tomography, and magnetic resonance imaging in thoracic esophageal cancer

“…Perhaps the reasons for great mismatching between GTV MRI and GTV PET are as follows. Owing to its poor spatial resolution and partial volume effect, PET may be inferior to T 2 W‐MRI for anatomic visualization of the esophageal wall 28 . Furthermore, the SUV value of PET‐CT selected in delineating GTV may be so low as to including normal periesophageal tissue, which would reduce the accurate in target delineation inevitably.…”

Ultrasonographic measurement of the thickness of cervical oesophagus layers in the reflux oesophagitis: Association with clinical findings

“…Furthermore, ultrasonographic imaging is based on the penetration of tissues by sound waves, which makes it extremely challenging for the evaluation of the oesophagus located within the mediastinum, covered by the lungs. Thus, only two parts of the oesophagus can be adequately visualised in neck and upper abdominal examinations: the cervical part posteromedial to the left lobe of the thyroid gland and the cardiac part between the aorta and liver 19 . In this study, we chose the cervical oesophagus because the latter cannot be visualised with linear transducers with high frequency, making it difficult to obtain data regarding the mucosal and submucosal layers of the oesophagus.…”

Użyteczność i ograniczenia badania 18F-FDG PET/CT w diagnostyce nowotworu złośliwego przełyku

“…Czułość i swoistość metody 18 F-FDG PET/CT w ocenie przerzutów odległych w przebiegu OSCC wynosi odpowiednio 81%, 91% [11]. Zdaniem autorów [2,9,[11][12][13][14], może być ponadto wykorzystywana w ocenie cechy N, szczególnie u chorych z rozpoznanym OAC (Tabela 1.). Ograniczeniem badania 18 F-FDG PET/CT w diagnostyce przerzutów do węzłów chłonnych jest jednakże niska -w stosunku do wymiarów węzłów chłonnych -rozdzielczość przestrzenna.…”

“…W przypadku badania cechy T, metoda 18 F-FDG PET/CT wykazuje szczególną przydatność w ocenie OSCC z uwagi na zwiększoną tendencję do wychwytu radioznacznika przez guzy płaskonabłonkowe w porównaniu z nowotworami pochodzenia gruczołowego (Rycina 1.) [2].…”