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논문 상세정보

췌장의 이중기 나선식 CT : 동맥기와 문맥기의 비교

Dual Phase Spiral CT of the Pancreas : Comparison of Arterial and Portal Phase

Abstract

Purpose : To compare the images of arterial phase (AP) and portal venous phase (PVP) in the evaluation ofconspicuousness of lesion and peripancreatic arterial and venous opacification in pancreatic diseases. Materialsand Methods : Dual-phase spiral CT was performed in 37 patients with pancreatic adenocarcinoma and 21 patientswith pancreatitis. CT scans were performed with 5mm collimation at 1 : 1 pitch table feed. Images of AP and PVPwere obtained at 30 and 65 seconds after administration of contrast material, was initiated. Using a gradingsystem, images were analalysed for conspicuousness of lesion and vascular opacification(grade 1=good, grade2=fair, grade 3=poor). Results : In pancreatic adenocarcinoma, 35 and 36 of 37 cases showed low attenuation on APand PVP, respectively. With regard to conspicuousness of tumour, PVP(mean grade : 1.24) was superior AP(mean grade: 1.43), but not significantly(p=0.0745). In arterial opacification, AP(mean grade : 1.03) was significantlysuperior to PVP(mean grade : 1.30, ; p=0.0051). In venous opacification, PVP(mean grade : 1.19) was significautlyto AP(mean grade : 2.41 ; p<0.0001). In pancreatitis, 14 and 15 of 21 cases showed localized hypo-attenuatinglesion indicating necrosis or fluid collection, on AP and PVP, respectively. With regard to conspicuousness oflesion, PVP(mean grade : 1.61) was superior to AP(mean grade : 1.81), but not significantly(p=0.1088). In arterialopacification, AP(mean grade : 1.05) was significantly superior to PVP(mean grade: 1.38 ; p=0.0180). In venousopacification, PVP(mean grade : 1.10) was significantly superior to AP(mean grade : 2.33 ; p=0.0005). Conclusion :For the diagnosis and staging of pancreatic disease, dual-phase spiral CT in arterial and portal venous phase maybe recommendable. The portal venous phase of spiral CT seems, however, to be superior to the arterial phasebecause the lesion is more conspicuous and there is venous opacification.

참고문헌 (8)

  1. Pancreatic adenocarcinoma : designing the examination to evaluate the clinical questions , Megibow AJ , Radiology / v.183,pp.297-303, 1992
  2. Practical usefulness of lymphatic and connective tissue clearance for the carcinoma of the pancreas head , Ishikawa O;Ohhigashi H;Sasaki Y(et al.) , Ann Surg / v.208,pp.215-220, 1988
  3. Facters influencing prognosis and indications for curative pancreatectomy for ductal adenocarcinoma of the head of the pancreas , mamabe T;Ohshio G;Baba N;Tobe T. , Int J Pancreatol / v.7,pp.187-195, 1990
  4. Pancreatic ductal adeoncarcinoma : diagnosis and staging with dynamic CT , Frreeny PC;Marks WM;Ryan JA;Traverso LW , Radiology / v.166,pp.125-133, 1988
  5. Acute pancreatitis : value of CT in establishing prognosis , Balthazar EJ;Robinson DL;Megibow AJ;Ranson JH , Radiology / v.174,pp.331-336, 1990
  6. Pancretic necrosis : CT manifestations , Whit EM;Wittenberg J;Mueller PR(et al.) , Radiology / v.158,pp.343-346, 1986
  7. Spiral CT of the pancreas with multiplanar display , Fishman EK;Wyatt SH;Ney DR Kuhlman JE;Siegelman SS , AJR / v.159,pp.1209-1215, 1992
  8. Spiral CT of the pancreas , Dupuy DE;Costello P;Ecker CP , Radiology / v.183,pp.815-818, 1992

이 논문을 인용한 문헌 (1)

  1. 1998. "Dynamic Study of the Pancreas with Spiral CT : Comparison of Amount of the Contrast Medium" 대한방사선의학회지 = Journal of the Korean Radiological Society, 38(2): 285~289 

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