For planning of the access route, a

For planning of the access route, a CT scan of the
region of interest is performed first. The preliminary scan can be performed without contrast if a recent diagnostic study is available and the lesion is easily visible. In the chest, a nonenhanced CT scan (slice thickness 3mm or less) is also sufficient for detection of intrapulmonary lesions suitable for aspiration or punch biopsy. For suspect masses in the mediastinum and abdomen (intra- and retroperitoneal), a contrastenhanced CT scan is necessary for clear differentiation of parenchymal organs, intestines, and blood vessels. Focal lesions within parenchymal organs are usually visualized during the venous phase (scan delay 50–70 s). An additional arterial phase (scan delay approximately 30 s) scan should be obtained if arteries are present along the access path (e.g., parasternal access, internal mammary artery) and in hypervascularized lesions (e.g., hepatocellular carcinoma, metastases of renal cell carcinoma).

Hasil (Bahasa Indonesia) 2:

Untuk perencanaan rute akses, CT scan dari
daerah bunga dilakukan pertama. Scan awal dapat dilakukan tanpa kontras jika sebuah studi baru-baru ini tersedia diagnostik dan lesi mudah terlihat. Di dada, CT scan nonenhanced (ketebalan irisan 3mm atau kurang) juga cukup untuk mendeteksi lesi intrapulmonary cocok untuk aspirasi atau biopsi punch. Untuk massa tersangka dalam mediastinum dan perut (intra dan retroperitoneal), CT scan contrastenhanced diperlukan untuk diferensiasi yang jelas organ parenkim, usus, dan pembuluh darah. Lesi fokal dalam organ parenkim biasanya divisualisasikan selama fase vena (pemindaian delay 50-70 s). Fase arteri tambahan (delay scan sekitar 30 s) scan harus diperoleh jika arteri yang hadir di sepanjang jalan akses (misalnya akses parasternal, arteri mamaria interna) dan lesi hypervascularized (misalnya, karsinoma hepatoseluler, metastasis karsinoma sel ginjal).